A stone seal bearing the name of one of the families who acted as servants in the First Temple and then returned to Jerusalem after being exiled to Babylonia has been uncovered in an archeological excavation in Jerusalem's City of David, a prominent Israeli archeologist said Wednesday.
A crescent moon, the symbol of the chief Babylonian god Sin, appears on the top of the altar.
Under this scene are three Hebrew letters spelling Temech, Mazar said.
The 2,500-year-old black stone seal, which has the name "Temech" engraved on it, was found earlier this week amid stratified debris in the excavation under way just outside the Old City walls near the Dung Gate, said archeologist Dr. Eilat Mazar, who is leading the dig.
According to the Book of Nehemiah, the Temech family were servants of the First Temple and were sent into exile to Babylon following its destruction by the Babylonians in 586 BCE.
The family was among those who later returned to Jerusalem, the Bible recounts.
The seal, which was bought in Babylon and dates to 538-445 BCE, portrays a common and popular cultic scene, Mazar said.
The 2.1 x 1.8-cm. elliptical seal is engraved with two bearded priests standing on either side of an incense altar with their hands raised forward in a position of worship.
The Bible refers to the Temech family: "These are the children of the province, that went up out of the captivity, of those that had been carried away, whom Nebuchadnezzar the king of Babylon had carried away, and came again to Jerusalem and to Judah, every one unto his city." [Nehemiah 7:6]... "The Nethinim [7:46]"... The children of Temech." [7:55].
The fact that this cultic scene relates to the Babylonian chief god seemed not to have disturbed the Jews who used it on their own seal, she added.
The seal of one of the members of the Temech family was discovered just dozens of meters away from the Opel area, where the servants of the Temple, or "Nethinim," lived in the time of Nehemiah, Mazar said.
"The seal of the Temech family gives us a direct connection between archeology and the biblical sources and serves as actual evidence of a family mentioned in the Bible," she said. "One cannot help being astonished by the credibility of the biblical source as seen by the archaeological find."
The find will be announced by Mazar at the 8th annual Herzliya Conference on Sunday.
The archeologist, who rose to international prominence for her recent excavation that may have uncovered King David's palace, most recently uncovered the remnants of a wall from Nehemiah.
Thursday, January 17, 2008
Tuesday, December 11, 2007
Biblical Wall May Have Been Located
A wall mentioned in the Bible's Book of Nehemiah and long sought by archaeologists apparently has been found, an Israeli archaeologist says.
A team of archaeologists discovered the wall in Jerusalem's ancient City of David during a rescue attempt on a tower that was in danger of collapse, said Eilat Mazar, head of the Institute of Archaeology at the Shalem Center, a Jerusalem-based research and educational institute, and leader of the dig.
Artifacts including pottery shards and arrowheads found under the tower suggested that both the tower and the nearby wall are from the 5th century B.C., the time of Nehemiah, Mazar said this week. Scholars previously thought the wall dated to the Hasmonean period from about 142 B.C. to 37 B.C.
The findings suggest that the structure was actually part of the same city wall the Bible says Nehemiah rebuilt, Mazar said. The Book of Nehemiah gives a detailed description of construction of the walls, destroyed earlier by the Babylonians.
"We were amazed," she said, noting that the discovery was made at a time when many scholars argued that the wall did not exist.
"This was a great surprise. It was something we didn't plan," Mazar said.
The first phase of the dig, completed in 2005, uncovered what Mazar believes to be the remains of King David's palace, built by King Hiram of Tyre, and also mentioned in the Bible.
Ephraim Stern, professor emeritus of archaeology at Hebrew University and chairman of the state of Israel archaeological council, offered support for Mazar's claim.
"The material she showed me is from the Persian period," the period of Nehemiah, he said. "I can sign on the date of the material she found."
However, another scholar disputed the significance of the discovery.
Israel Finkelstein, professor of archaeology at Tel Aviv University, called the discovery "an interesting find," but said the pottery and other artifacts do not indicate that the wall was built in the time of Nehemiah. Because the debris was not connected to a floor or other structural part of the wall, the wall could have been built later, Finkelstein said.
"The wall could have been built, theoretically, in the Ottoman period," he said. "It's not later than the pottery — that's all we know."
A team of archaeologists discovered the wall in Jerusalem's ancient City of David during a rescue attempt on a tower that was in danger of collapse, said Eilat Mazar, head of the Institute of Archaeology at the Shalem Center, a Jerusalem-based research and educational institute, and leader of the dig.
Artifacts including pottery shards and arrowheads found under the tower suggested that both the tower and the nearby wall are from the 5th century B.C., the time of Nehemiah, Mazar said this week. Scholars previously thought the wall dated to the Hasmonean period from about 142 B.C. to 37 B.C.
The findings suggest that the structure was actually part of the same city wall the Bible says Nehemiah rebuilt, Mazar said. The Book of Nehemiah gives a detailed description of construction of the walls, destroyed earlier by the Babylonians.
"We were amazed," she said, noting that the discovery was made at a time when many scholars argued that the wall did not exist.
"This was a great surprise. It was something we didn't plan," Mazar said.
The first phase of the dig, completed in 2005, uncovered what Mazar believes to be the remains of King David's palace, built by King Hiram of Tyre, and also mentioned in the Bible.
Ephraim Stern, professor emeritus of archaeology at Hebrew University and chairman of the state of Israel archaeological council, offered support for Mazar's claim.
"The material she showed me is from the Persian period," the period of Nehemiah, he said. "I can sign on the date of the material she found."
However, another scholar disputed the significance of the discovery.
Israel Finkelstein, professor of archaeology at Tel Aviv University, called the discovery "an interesting find," but said the pottery and other artifacts do not indicate that the wall was built in the time of Nehemiah. Because the debris was not connected to a floor or other structural part of the wall, the wall could have been built later, Finkelstein said.
"The wall could have been built, theoretically, in the Ottoman period," he said. "It's not later than the pottery — that's all we know."
Rethinking Byzantine-era Judaism
A row of artisans and laborers - one with a saw in his hand, another with a chisel, and others with various sized hammers - are depicted on the mosaic floor recently uncovered in a Roman- or Byzantine-era synagogue at Khirbet Wadi Hamam, on Mount Nitai in the Lower Galilee. The workers appear next to a very large building, which they seem to be constructing.
Because the image appears on the synagogue floor, the researchers have assumed it depicts the construction of an important Biblical structure. Is it the Temple, Noah's Ark, the Tower of Babel, or some other well-known work?
Dr. Uzi Leibner of the Hebrew University's Institute of Archaeology and Scholion Interdisciplinary Research Center in Jewish Studies, who is leading the excavation, has no clear answer at this stage. What is clear is that the mosaic, constructed from very small stones - whose sides measure about four millimeters each - is unique. No such scenes have been found in other ancient synagogues or structures in Israel from that period. But which period exactly are we referring to - the Roman or the Byzantine? The dig at the synagogue is being carried out to answer that question.
To judge by the findings, the synagogue, which sits within the Arbel National Park, is a "Galilean synagogue" - a high-quality Romanesque structure with an elaborate facade facing toward Jerusalem and attractive stone carvings. Synagogues of this type were thought to date from the late Roman period, between the second and fourth centuries. However, in the last few years, researchers have discovered that synagogues of this type were built in the Byzantine era, too - between the fifth and sixth centuries.
The debate was sparked by the synagogue at Capernaum, a fine example of a Galilean synagogue that clearly was built in the fifth century. The findings from that synagogue and others led some researchers to consider the hypothesis that the Galilean synagogues were built mainly in the fifth and sixth centuries.
Contradictory evidence
On the face of it, this theory contradicts everything known about Judaism in the beginning of the first millennium C.E., and its relations with the ruling empires at the time. The common wisdom is that Jewish settlement flourished in the Galilee in the late Roman era - Rabbi Yehuda Hanassi compiled the Mishna at Zippori, and remarkable public buildings were constructed in many Jewish communities. However, from the mid-fourth century, when the Christian Byzantine empire rose to power, Jewish life was hampered, and some of the laws at that time even forbade the establishment of synagogues.
However, the archaeological findings from Capernaum and other synagogues indicate that things were more complex than historical records may indicate. More evidence now supports the theory that most of the Galilean synagogues actually were built during the Byzantine period, and that their Romanesque components were initially parts of earlier structures.
The synagogue at Khirbet Wadi Hamam was large and elaborate. It had a long hall running from north to south, of which about one quarter was exposed in the last excavation season, with a southern facade facing Jerusalem. The hall contained three rows of columns, and had two rows of benches along the northern, western and eastern walls.
The uniqueness of the building lies not only in its mosaic floor, but also in its combination of basalt and limestone. The walls were built from layers of basalt topped by layers of limestone; the stone benches incorporated limestone as well. The researchers believe the limestone was integrated into the structure during a massive repair. As in other Galilean synagogues, this one also contains late Roman-era architectural details - most of them also from limestone. However, the researchers believe that the signs of renovation could indicate the structure was actually built at a later stage, and that these items actually were part of an earlier structure.
The synagogue lies inside a large village, of more than 50 dunams, one of the larger, late Roman-era and Byzantine-era Jewish villages discovered in the rural Galilee. It is located strategically above the source of the Arbel river and the ancient road that wound from the Kinneret basin to the Lower Galilee and from there, via the Beit Netofa valley, to the Mediterranean sea.
Not far away were two large, well-known communities - Kfar Arbel and Migdal - as well as the big Jewish centers of the period, Tiberias and Zippori. Despite all these facts, the original name of the community was not preserved there, and it is still unknown. Findings indicate the village was abandoned permanently in the fourth century. Researchers are hoping to learn at what stage the synagogue, with its unique mosaic floor, was built.
Judging by other buildings unearthed close to the synagogue - an oil press and a two-story dwelling - the residents of the village were fairly well-off. The homes in the community were built on terraces along the slopes of the hill, separated by lanes. Since the village apparently was abandoned in the fourth century - which contradicts the claim that the synagogue dates to the Byzantine era - that period's architecture can be examined without interference from later structures. Leibner believes the synagogue could be a test case that would help researchers improve their dating methods for Galilean synagogues. In the upcoming excavation seasons, he says he intends to find more clues that would provide a precise date, and thus possibly solve the riddle.
Because the image appears on the synagogue floor, the researchers have assumed it depicts the construction of an important Biblical structure. Is it the Temple, Noah's Ark, the Tower of Babel, or some other well-known work?
Dr. Uzi Leibner of the Hebrew University's Institute of Archaeology and Scholion Interdisciplinary Research Center in Jewish Studies, who is leading the excavation, has no clear answer at this stage. What is clear is that the mosaic, constructed from very small stones - whose sides measure about four millimeters each - is unique. No such scenes have been found in other ancient synagogues or structures in Israel from that period. But which period exactly are we referring to - the Roman or the Byzantine? The dig at the synagogue is being carried out to answer that question.
To judge by the findings, the synagogue, which sits within the Arbel National Park, is a "Galilean synagogue" - a high-quality Romanesque structure with an elaborate facade facing toward Jerusalem and attractive stone carvings. Synagogues of this type were thought to date from the late Roman period, between the second and fourth centuries. However, in the last few years, researchers have discovered that synagogues of this type were built in the Byzantine era, too - between the fifth and sixth centuries.
The debate was sparked by the synagogue at Capernaum, a fine example of a Galilean synagogue that clearly was built in the fifth century. The findings from that synagogue and others led some researchers to consider the hypothesis that the Galilean synagogues were built mainly in the fifth and sixth centuries.
Contradictory evidence
On the face of it, this theory contradicts everything known about Judaism in the beginning of the first millennium C.E., and its relations with the ruling empires at the time. The common wisdom is that Jewish settlement flourished in the Galilee in the late Roman era - Rabbi Yehuda Hanassi compiled the Mishna at Zippori, and remarkable public buildings were constructed in many Jewish communities. However, from the mid-fourth century, when the Christian Byzantine empire rose to power, Jewish life was hampered, and some of the laws at that time even forbade the establishment of synagogues.
However, the archaeological findings from Capernaum and other synagogues indicate that things were more complex than historical records may indicate. More evidence now supports the theory that most of the Galilean synagogues actually were built during the Byzantine period, and that their Romanesque components were initially parts of earlier structures.
The synagogue at Khirbet Wadi Hamam was large and elaborate. It had a long hall running from north to south, of which about one quarter was exposed in the last excavation season, with a southern facade facing Jerusalem. The hall contained three rows of columns, and had two rows of benches along the northern, western and eastern walls.
The uniqueness of the building lies not only in its mosaic floor, but also in its combination of basalt and limestone. The walls were built from layers of basalt topped by layers of limestone; the stone benches incorporated limestone as well. The researchers believe the limestone was integrated into the structure during a massive repair. As in other Galilean synagogues, this one also contains late Roman-era architectural details - most of them also from limestone. However, the researchers believe that the signs of renovation could indicate the structure was actually built at a later stage, and that these items actually were part of an earlier structure.
The synagogue lies inside a large village, of more than 50 dunams, one of the larger, late Roman-era and Byzantine-era Jewish villages discovered in the rural Galilee. It is located strategically above the source of the Arbel river and the ancient road that wound from the Kinneret basin to the Lower Galilee and from there, via the Beit Netofa valley, to the Mediterranean sea.
Not far away were two large, well-known communities - Kfar Arbel and Migdal - as well as the big Jewish centers of the period, Tiberias and Zippori. Despite all these facts, the original name of the community was not preserved there, and it is still unknown. Findings indicate the village was abandoned permanently in the fourth century. Researchers are hoping to learn at what stage the synagogue, with its unique mosaic floor, was built.
Judging by other buildings unearthed close to the synagogue - an oil press and a two-story dwelling - the residents of the village were fairly well-off. The homes in the community were built on terraces along the slopes of the hill, separated by lanes. Since the village apparently was abandoned in the fourth century - which contradicts the claim that the synagogue dates to the Byzantine era - that period's architecture can be examined without interference from later structures. Leibner believes the synagogue could be a test case that would help researchers improve their dating methods for Galilean synagogues. In the upcoming excavation seasons, he says he intends to find more clues that would provide a precise date, and thus possibly solve the riddle.
Queen Helene's mansion in ancient Jerusalem
Israeli archaeologists digging in an east Jerusalem parking lot have uncovered a 2,000-year-old mansion they believe likely belonged to Queen Helene of Adiabene, a minor but exceptional character in the city's history.
The remains of the building were unearthed just outside the walls of Jerusalem's Old City, underneath layers of later settlement that were themselves hidden until recently under the asphalt of a small parking lot.
The dig site is in the Arab neighborhood of Silwan, built on a slope that houses the most ancient remnants of settlement in Jerusalem and is known to scholars as the City of David.
The building, which includes storerooms, living quarters and ritual baths, is by far the largest and most elaborate structure discovered by archaeologists in the City of David area, which was home 2,000 years ago almost exclusively to the city's poor. The contemporary Jewish historian Josephus Flavius, who penned detailed descriptions of Jerusalem, mentions only one wealthy family that lived there — the family of Queen Helene.
According to Josephus and Jewish texts, Helene was from a royal clan that ruled Adiabene, a region now in northern Iraq. Along with her family, she converted to Judaism and came to Jerusalem in the first half of the first century A.D.
Helene merited grateful mention in the Mishna, the written version of Judaism's oral tradition, where she is praised for her generosity to Jerusalem's poor and for making contributions to the Second Temple, the center of the Jewish faith, which was just a few hundred meters (yards) uphill from her house. She was buried in an elaborate tomb not far away.
Today there is a downtown Jerusalem street named for her.
There is a "high probability" that the mansion belonged to Helene's family, simply because no other building comes close to matching the historical description, Israel Antiquities Authority archaeologist Doron Ben-Ami said at a news conference announcing the discovery Wednesday.
Built when Jerusalem was capital of the Roman-ruled territory of Judea, the building was destroyed along with the temple and the rest of the city when Roman legions quelled a Jewish revolt nearly two millennia ago, he said.
Diggers at the site discerned that the massive stones of the second floor had been purposely toppled onto the arches of the first, causing the house to collapse, he said, and in the ruins they found ceramic shards and coins dating to the time of the Jewish revolt against Rome.
"This amazing structure was destroyed with the destruction of Jerusalem in 70 A.D.," Ben-Ami said.
Aren Maier, an archaeology professor at Israel's Bar-Ilan University, said Ben-Ami's hypothesis about the house's famous resident was a good one, because no similar building has yet been found anywhere nearby.
"If he did find a massive building of this kind, of course you can't say for sure, but it's certainly logical," Maier said.
Some of the most interesting archaeological finds in Jerusalem in recent years have come from the City of David dig, which has also become a popular tourist site.
But the dig is controversial, because it's largely funded by a foundation affiliated with hardline Jewish settlers that is also buying up Palestinian property in the neighborhood and moving Jewish families in.
Israel captured east Jerusalem from Jordan in the 1967 Mideast War. Palestinians see the eastern part of the city as capital of a future state.
The remains of the building were unearthed just outside the walls of Jerusalem's Old City, underneath layers of later settlement that were themselves hidden until recently under the asphalt of a small parking lot.
The dig site is in the Arab neighborhood of Silwan, built on a slope that houses the most ancient remnants of settlement in Jerusalem and is known to scholars as the City of David.
The building, which includes storerooms, living quarters and ritual baths, is by far the largest and most elaborate structure discovered by archaeologists in the City of David area, which was home 2,000 years ago almost exclusively to the city's poor. The contemporary Jewish historian Josephus Flavius, who penned detailed descriptions of Jerusalem, mentions only one wealthy family that lived there — the family of Queen Helene.
According to Josephus and Jewish texts, Helene was from a royal clan that ruled Adiabene, a region now in northern Iraq. Along with her family, she converted to Judaism and came to Jerusalem in the first half of the first century A.D.
Helene merited grateful mention in the Mishna, the written version of Judaism's oral tradition, where she is praised for her generosity to Jerusalem's poor and for making contributions to the Second Temple, the center of the Jewish faith, which was just a few hundred meters (yards) uphill from her house. She was buried in an elaborate tomb not far away.
Today there is a downtown Jerusalem street named for her.
There is a "high probability" that the mansion belonged to Helene's family, simply because no other building comes close to matching the historical description, Israel Antiquities Authority archaeologist Doron Ben-Ami said at a news conference announcing the discovery Wednesday.
Built when Jerusalem was capital of the Roman-ruled territory of Judea, the building was destroyed along with the temple and the rest of the city when Roman legions quelled a Jewish revolt nearly two millennia ago, he said.
Diggers at the site discerned that the massive stones of the second floor had been purposely toppled onto the arches of the first, causing the house to collapse, he said, and in the ruins they found ceramic shards and coins dating to the time of the Jewish revolt against Rome.
"This amazing structure was destroyed with the destruction of Jerusalem in 70 A.D.," Ben-Ami said.
Aren Maier, an archaeology professor at Israel's Bar-Ilan University, said Ben-Ami's hypothesis about the house's famous resident was a good one, because no similar building has yet been found anywhere nearby.
"If he did find a massive building of this kind, of course you can't say for sure, but it's certainly logical," Maier said.
Some of the most interesting archaeological finds in Jerusalem in recent years have come from the City of David dig, which has also become a popular tourist site.
But the dig is controversial, because it's largely funded by a foundation affiliated with hardline Jewish settlers that is also buying up Palestinian property in the neighborhood and moving Jewish families in.
Israel captured east Jerusalem from Jordan in the 1967 Mideast War. Palestinians see the eastern part of the city as capital of a future state.
Wednesday, December 5, 2007
Southwestern Indians ferment corn and make beer?
The belief among some archeologists that Europeans introduced alcohol to the Indians of the American Southwest may be faulty.
Ancient and modern pot sherds collected by New Mexico state archeologist Glenna Dean, in conjunction with analyses by Sandia National Laboratories researcher Ted Borek, open the possibility that food or beverages made from fermenting corn were consumed by native inhabitants centuries before the Spanish arrived.
Dean, researching through her small business Archeobotanical Services, says, “There’s been an artificial construct among archeologists working in New Mexico that no one had alcohol here until the Spanish brought grapes and wine. That’s so counter-intuitive. It doesn’t make sense to me as a social scientist that New Mexico would have been an island in pre-Columbian times. By this reasoning, ancestral puebloans would have been the only ones in the Southwest not to know about fermentation.”
Not only does historical evidence for fermented beverages exist for surrounding native groups, but people around the world have found ways to alter their consciousness, she says: “Wild yeast blows everywhere.” In the Middle Ages in Europe, “Everyone drank ale because the fermentation purified water.” Egyptian tombs contained loaves of bread “that we used to assume were to eat, but they’re actually dry beer: put bread in water, you get beer.”
Closer to home, the Tarahumara Indians in northern Mexico to this day drink a weak beer called tiswin, made by fermenting corn kernels.
Could ancestral puebloan farmers — whose ancient mud and rock homes have been found in New Mexico, Arizona, Utah, and Colorado — have done the same?
To check her hypothesis, Dean presented Borek with three types of samples: pots in which she herself brewed tiswin, brewing pots used by Tarahumara Indians, and pot sherds from 800-year-old settlements in west-central New Mexico. The question: would analysis support the idea that ancient farmers enhanced their nutrition — and perhaps enjoyment of foods — by manipulating wild yeast and corn mixtures centuries before Columbus?
Borek, working under a Sandia program that permits limited use of Sandia tools to aid local small businesses, used gas chromatography and mass spectrometry (rather than destructive solvents) to analyze vapors produced by mild heating of the pot samples.
Sandia is a National Nuclear Security Administration laboratory.
From Dean’s pots, Borek developed a profile of gasses emitted from a known tiswin source. Then he examined Tarahumaran pots to see whether the gaseous profiles corresponded. Finally he examined pot sherds that had been buried for centuries to see if the obviously weakened fumes would match, in kind if not in volume, his previous two samples.
Comparing peaks across the three data sets showed the presence of similar organic species, Borek says, though more work must be done before positive conclusions can be drawn.
“We see similarities. We have not found that ‘smoking gun’ that definitely provides evidence of intentional fermentation. It’s always possible that corn fermented in a pot without the intent of the owner,” he says, “and that it wasn’t meant to be drunk.”
Analysis is now underway to highlight patterns of organic species that might provide a more definite, intentional result.
“There appear to be consistencies across the modern home brew and Tarahumaran pots,” Borek says. “We are currently examining all data to look for markers that would indicate intentional fermentation occurred on archeological articles.”
The work opens new, unexpected doors, he says, for understanding the human past by means of gas chromatography and mass spectrometry.
Sandia researcher Curt Mowry is examining data and comparing all sets across the provided references, Tarahumaran pots, and ancient samples.
The results were presented by Borek in a talk at the Materials Research Society fall meeting in Boston last week.
The equipment used in this study is commercially available hardware, modified by Sandia to investigate traces of organic materials in the ambient air of the Washington DC Metro system and on weapon components and materials.
Ancient and modern pot sherds collected by New Mexico state archeologist Glenna Dean, in conjunction with analyses by Sandia National Laboratories researcher Ted Borek, open the possibility that food or beverages made from fermenting corn were consumed by native inhabitants centuries before the Spanish arrived.
Dean, researching through her small business Archeobotanical Services, says, “There’s been an artificial construct among archeologists working in New Mexico that no one had alcohol here until the Spanish brought grapes and wine. That’s so counter-intuitive. It doesn’t make sense to me as a social scientist that New Mexico would have been an island in pre-Columbian times. By this reasoning, ancestral puebloans would have been the only ones in the Southwest not to know about fermentation.”
Not only does historical evidence for fermented beverages exist for surrounding native groups, but people around the world have found ways to alter their consciousness, she says: “Wild yeast blows everywhere.” In the Middle Ages in Europe, “Everyone drank ale because the fermentation purified water.” Egyptian tombs contained loaves of bread “that we used to assume were to eat, but they’re actually dry beer: put bread in water, you get beer.”
Closer to home, the Tarahumara Indians in northern Mexico to this day drink a weak beer called tiswin, made by fermenting corn kernels.
Could ancestral puebloan farmers — whose ancient mud and rock homes have been found in New Mexico, Arizona, Utah, and Colorado — have done the same?
To check her hypothesis, Dean presented Borek with three types of samples: pots in which she herself brewed tiswin, brewing pots used by Tarahumara Indians, and pot sherds from 800-year-old settlements in west-central New Mexico. The question: would analysis support the idea that ancient farmers enhanced their nutrition — and perhaps enjoyment of foods — by manipulating wild yeast and corn mixtures centuries before Columbus?
Borek, working under a Sandia program that permits limited use of Sandia tools to aid local small businesses, used gas chromatography and mass spectrometry (rather than destructive solvents) to analyze vapors produced by mild heating of the pot samples.
Sandia is a National Nuclear Security Administration laboratory.
From Dean’s pots, Borek developed a profile of gasses emitted from a known tiswin source. Then he examined Tarahumaran pots to see whether the gaseous profiles corresponded. Finally he examined pot sherds that had been buried for centuries to see if the obviously weakened fumes would match, in kind if not in volume, his previous two samples.
Comparing peaks across the three data sets showed the presence of similar organic species, Borek says, though more work must be done before positive conclusions can be drawn.
“We see similarities. We have not found that ‘smoking gun’ that definitely provides evidence of intentional fermentation. It’s always possible that corn fermented in a pot without the intent of the owner,” he says, “and that it wasn’t meant to be drunk.”
Analysis is now underway to highlight patterns of organic species that might provide a more definite, intentional result.
“There appear to be consistencies across the modern home brew and Tarahumaran pots,” Borek says. “We are currently examining all data to look for markers that would indicate intentional fermentation occurred on archeological articles.”
The work opens new, unexpected doors, he says, for understanding the human past by means of gas chromatography and mass spectrometry.
Sandia researcher Curt Mowry is examining data and comparing all sets across the provided references, Tarahumaran pots, and ancient samples.
The results were presented by Borek in a talk at the Materials Research Society fall meeting in Boston last week.
The equipment used in this study is commercially available hardware, modified by Sandia to investigate traces of organic materials in the ambient air of the Washington DC Metro system and on weapon components and materials.
Tuesday, November 27, 2007
Gene study: single migration across Bering Strait
Did a relatively small number of people from Siberia who trekked across a Bering Strait land bridge some 12,000 years ago give rise to the native peoples of North and South America?
Or did the ancestors of today’s native peoples come from other parts of Asia or Polynesia, arriving multiple times at several places on the two continents, by sea as well as by land, in successive migrations that began as early as 30,000 years ago?
The questions – featured on magazine covers and TV specials – have agitated anthropologists, archaeologists and others for decades.
University of Michigan scientists, working with an international team of geneticists and anthropologists, have produced new genetic evidence that’s likely to hearten proponents of the land bridge theory. The study, published online in PLoS Genetics, is one of the most comprehensive analyses so far among efforts to use genetic data to shed light on the topic.
The researchers examined genetic variation at 678 key locations or markers in the DNA of present-day members of 29 Native American populations across North, Central and South America. They also analyzed data from two Siberian groups. The analysis shows:
o genetic diversity, as well as genetic similarity to the Siberian groups, decreases the farther a native population is from the Bering Strait – adding to existing archaeological and genetic evidence that the ancestors of native North and South Americans came by the northwest route.
o a unique genetic variant is widespread in Native Americans across both American continents – suggesting that the first humans in the Americas came in a single migration or multiple waves from a single source, not in waves of migrations from different sources. The variant, which is not part of a gene and has no biological function, has not been found in genetic studies of people elsewhere in the world except eastern Siberia.
The researchers say the variant likely occurred shortly prior to migration to the Americas, or immediately afterwards.
“We have reasonably clear genetic evidence that the most likely candidate for the source of Native American populations is somewhere in east Asia,” says Noah A. Rosenberg, Ph.D., assistant professor of human genetics and assistant research professor of bioinformatics at the Center for Computational Medicine and Biology at the U-M Medical School and assistant research professor at the U-M Life Sciences Institute.
“If there were a large number of migrations, and most of the source groups didn’t have the variant, then we would not see the widespread presence of the mutation in the Americas,” he says.
Rosenberg has previously studied the same set of 678 genetic markers used in the new study in 50 populations around the world, to learn which populations are genetically similar and what migration patterns might explain the similarities. For North and South America, the current research breaks new ground by looking at a large number of native populations using a large number of markers.
The pattern the research uncovered – that as the founding populations moved south from the Bering Strait, genetic diversity declined – is what one would expect when migration is relatively recent, says Mattias Jakobsson, Ph.D., co-first author of the paper and a post-doctoral fellow in human genetics at the U-M Medical School and the U-M Center for Computational Medicine and Biology. There has not been time yet for mutations that typically occur over longer periods to diversify the gene pool.
In addition, the study’s findings hint at supporting evidence for scholars who believe early inhabitants followed the coasts to spread south into South America, rather than moving in waves across the interior.
“Assuming a migration route along the coast provides a slightly better fit with the pattern we see in genetic diversity,” Rosenberg says.
The study also found that:
Populations in the Andes and Central America showed genetic similarities.
Populations from western South America showed more genetic variation than populations from eastern South America.
Among closely related populations, the ones more similar linguistically were also more similar genetically.
Or did the ancestors of today’s native peoples come from other parts of Asia or Polynesia, arriving multiple times at several places on the two continents, by sea as well as by land, in successive migrations that began as early as 30,000 years ago?
The questions – featured on magazine covers and TV specials – have agitated anthropologists, archaeologists and others for decades.
University of Michigan scientists, working with an international team of geneticists and anthropologists, have produced new genetic evidence that’s likely to hearten proponents of the land bridge theory. The study, published online in PLoS Genetics, is one of the most comprehensive analyses so far among efforts to use genetic data to shed light on the topic.
The researchers examined genetic variation at 678 key locations or markers in the DNA of present-day members of 29 Native American populations across North, Central and South America. They also analyzed data from two Siberian groups. The analysis shows:
o genetic diversity, as well as genetic similarity to the Siberian groups, decreases the farther a native population is from the Bering Strait – adding to existing archaeological and genetic evidence that the ancestors of native North and South Americans came by the northwest route.
o a unique genetic variant is widespread in Native Americans across both American continents – suggesting that the first humans in the Americas came in a single migration or multiple waves from a single source, not in waves of migrations from different sources. The variant, which is not part of a gene and has no biological function, has not been found in genetic studies of people elsewhere in the world except eastern Siberia.
The researchers say the variant likely occurred shortly prior to migration to the Americas, or immediately afterwards.
“We have reasonably clear genetic evidence that the most likely candidate for the source of Native American populations is somewhere in east Asia,” says Noah A. Rosenberg, Ph.D., assistant professor of human genetics and assistant research professor of bioinformatics at the Center for Computational Medicine and Biology at the U-M Medical School and assistant research professor at the U-M Life Sciences Institute.
“If there were a large number of migrations, and most of the source groups didn’t have the variant, then we would not see the widespread presence of the mutation in the Americas,” he says.
Rosenberg has previously studied the same set of 678 genetic markers used in the new study in 50 populations around the world, to learn which populations are genetically similar and what migration patterns might explain the similarities. For North and South America, the current research breaks new ground by looking at a large number of native populations using a large number of markers.
The pattern the research uncovered – that as the founding populations moved south from the Bering Strait, genetic diversity declined – is what one would expect when migration is relatively recent, says Mattias Jakobsson, Ph.D., co-first author of the paper and a post-doctoral fellow in human genetics at the U-M Medical School and the U-M Center for Computational Medicine and Biology. There has not been time yet for mutations that typically occur over longer periods to diversify the gene pool.
In addition, the study’s findings hint at supporting evidence for scholars who believe early inhabitants followed the coasts to spread south into South America, rather than moving in waves across the interior.
“Assuming a migration route along the coast provides a slightly better fit with the pattern we see in genetic diversity,” Rosenberg says.
The study also found that:
Populations in the Andes and Central America showed genetic similarities.
Populations from western South America showed more genetic variation than populations from eastern South America.
Among closely related populations, the ones more similar linguistically were also more similar genetically.
Monday, November 26, 2007
Chocolate is at least 3,000 years old
The human love affair with chocolate is at least 3,000 years old -- and it began at least 500 years earlier than previously thought, according to new analyses of pottery shards from the Ulúa Valley region of northern Honduras.
But the first people to appreciate the cacao tree were probably after a buzz of another kind -- a fermented, winelike drink, research shows -- and only later discovered the chocolaty taste we love today.
In research published in the Nov. 27 issue of the Proceedings of the National Academy of Sciences, Cornell professor of anthropology John Henderson and colleagues found traces of caffeine and theobromine, an alkaloid similar to caffeine but specific to cacao, in 11 shards dated to 1100 B.C. The samples came from excavations directed by Henderson and University of California-Berkeley anthropology professor Rosemary Joyce at a site known as Puerto Escondido.
The findings offer chemical evidence for the earliest cacao consumption anywhere in the world.
In the past, the only chemical detection of cacao in ancient pottery required an intact vessel and a substantial amount of residue, Henderson said. To detect much smaller chemical traces in broken shards, co-authors Patrick E. McGovern and Gretchen Hall at the University of Pennsylvania Museum and W. Jeffrey Hurst at Hershey Foods used new extraction techniques along with liquid chromatography, gas chromatography and mass spectrometry -- techniques that could be used for sensitive chemical testing on many more remnants in the future.
"It's not very often that you find a whole vessel," said Henderson. "Now that you can process things from people's trash piles, you can see in much better context how these things were being used."
But while cacao beans (seeds) and the spicy, frothy chocolaty drink they produced were the stuff of royal ceremonies and elite gatherings in later millennia, Henderson said, it's likely that the earliest cacao drinkers made a simpler drink by fermenting the pulp around the seeds. The result (which at least one brewing company, in collaboration with McGovern, is working to reproduce) was a brew that tasted nothing like chocolate.
Since both beverages contain theobromine and caffeine, chemistry doesn't reveal whether a vessel held a winelike quaff made from pulp or the celebrated chocolate concoction made from seeds. But while the jugs of later, chocolate-drinking periods were short and wide, with broad openings to allow for pouring back and forth to create froth, the earlier bottles had long, skinny spouts that would frustrate the most diligent Starbucks froth specialist.
Over the ensuing centuries, Henderson said, the drink was traded, shared and used in ceremonies, creating social networks across the region and beyond.
"The upwardly mobile families were using cacao, serving it as part of a strategy for distinguishing themselves," he said. "It was a way of creating social obligation and political power locally and with people in distant villages. It's that context that gives us a way of understanding how it is that potters in villages hundreds of miles apart have the same understanding of what vessels should look like."
And over time, people likely discovered that the fermented seeds, not the pulp, were the real discovery.
"If we're right about the shift from wine made from pulp to chocolate made from seeds," said Henderson, then all the pomp and luxury that surrounded chocolate in later years -- "the control of cacao plantations by kings and chiefs, all the fancy serving of chocolate in the Aztec courts that so impressed the Spaniards, and the modern chocolate industry that developed from that -- all that was an unintended consequence of some early brewing."
But the first people to appreciate the cacao tree were probably after a buzz of another kind -- a fermented, winelike drink, research shows -- and only later discovered the chocolaty taste we love today.
In research published in the Nov. 27 issue of the Proceedings of the National Academy of Sciences, Cornell professor of anthropology John Henderson and colleagues found traces of caffeine and theobromine, an alkaloid similar to caffeine but specific to cacao, in 11 shards dated to 1100 B.C. The samples came from excavations directed by Henderson and University of California-Berkeley anthropology professor Rosemary Joyce at a site known as Puerto Escondido.
The findings offer chemical evidence for the earliest cacao consumption anywhere in the world.
In the past, the only chemical detection of cacao in ancient pottery required an intact vessel and a substantial amount of residue, Henderson said. To detect much smaller chemical traces in broken shards, co-authors Patrick E. McGovern and Gretchen Hall at the University of Pennsylvania Museum and W. Jeffrey Hurst at Hershey Foods used new extraction techniques along with liquid chromatography, gas chromatography and mass spectrometry -- techniques that could be used for sensitive chemical testing on many more remnants in the future.
"It's not very often that you find a whole vessel," said Henderson. "Now that you can process things from people's trash piles, you can see in much better context how these things were being used."
But while cacao beans (seeds) and the spicy, frothy chocolaty drink they produced were the stuff of royal ceremonies and elite gatherings in later millennia, Henderson said, it's likely that the earliest cacao drinkers made a simpler drink by fermenting the pulp around the seeds. The result (which at least one brewing company, in collaboration with McGovern, is working to reproduce) was a brew that tasted nothing like chocolate.
Since both beverages contain theobromine and caffeine, chemistry doesn't reveal whether a vessel held a winelike quaff made from pulp or the celebrated chocolate concoction made from seeds. But while the jugs of later, chocolate-drinking periods were short and wide, with broad openings to allow for pouring back and forth to create froth, the earlier bottles had long, skinny spouts that would frustrate the most diligent Starbucks froth specialist.
Over the ensuing centuries, Henderson said, the drink was traded, shared and used in ceremonies, creating social networks across the region and beyond.
"The upwardly mobile families were using cacao, serving it as part of a strategy for distinguishing themselves," he said. "It was a way of creating social obligation and political power locally and with people in distant villages. It's that context that gives us a way of understanding how it is that potters in villages hundreds of miles apart have the same understanding of what vessels should look like."
And over time, people likely discovered that the fermented seeds, not the pulp, were the real discovery.
"If we're right about the shift from wine made from pulp to chocolate made from seeds," said Henderson, then all the pomp and luxury that surrounded chocolate in later years -- "the control of cacao plantations by kings and chiefs, all the fancy serving of chocolate in the Aztec courts that so impressed the Spaniards, and the modern chocolate industry that developed from that -- all that was an unintended consequence of some early brewing."
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