Tuesday 27 October 2009

Pavlopetri -- the world's oldest known submerged town

The world's oldest known submerged town has been revealed through the discovery of late Neolithic pottery. The finds were made during an archaeological survey of Pavlopetri, off the southern Laconia coast of Greece.
Marine geo-archaeologist Dr Nic Flemming of the National Oceanography Centre, Southampton said: "The discovery of Neolithic pottery is incredible! It means that we are looking at a port city which may be 5000-6000 years old, with trade goods and wrecks nearby showing some of the very earliest days of seafaring trade in the Mediterranean."

The project is being carried out by a multidisciplinary team, including Dr Flemming, led by Mr Elias Spondylis, Ephorate of Underwater Antiquities of the Hellenic Ministry of Culture in Greece and Dr Jon Henderson, an underwater archaeologist from the Department of Archaeology at The University of Nottingham.
The underwater city was discovered in 1967 by Flemming, then at the National Institute of Oceanography. He worked out that it was Bronze Age, about 2000 BC, and arranged the permit for a team from Cambridge University to map it properly in 1968, which they did using just snorkels and tape measures. The results were published by The British School at Athens in 1969, but no further work has been done over the last 40 years. The site was so remote that its isolation protected it from human interference, while a submerged ridge of rock protected it from erosion.
IMAGE: Nic Flemming -- The curvature of the sea surface and the nearby walls is of course caused by the "fish-eye " lens. There is an obvious wall across the foreground,...

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Now in his 70s, Flemming has joined forces with archaeologists from the University of Nottingham and the Ephorate of Underwater Antiquities of the Hellenic Ministry of Culture as part of a five-year collaborative study of the site. The survey methods include laser range-finding on the surface and high-frequency sector-scanning sonar underwater. Their initial findings, and especially the discovery of Neolithic ceramics, mean that the submerged city was occupied at least 5,000 years ago, 1,200 years earlier than previously believed, and perhaps based on a primitive settlement much earlier still. The findings have been made public by the Greek government.
"What we've got here is something which is two or even three thousand years older than most of the submerged cities which have been studied," said Flemming: "And it is uniquely complete. We have almost the complete town plan, the main streets and all of the domestic buildings. We can study how it was used as a port, where ships came in and how trade was managed."

The total town area is about 100,000 square metres, about half of which has so far been mapped. Much is still covered by sand. The team has already found a new area of ruins, measuring about 100 by 100 metres.
Flemming is running the studies of sea-level change and tectonics at the site, while colleague Dr Neil Wells of the University of Southampton's School of Ocean and Earth Science at the National Oceanography Centre and one of his students have already modelled winds and waves to work out aspects of coastal sand transport and erosion.

IMAGE: This is a rectangular cist grave made by four stones standing on edge. The markings on the range pole are in 25cm bands.

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There is a lot more work to do in analysing the sand movements over the site, plotting various findings of submerged 'beachrock' which can be dated showing earlier shorelines now hundreds of metres offshore, and modelling the process of inundation itself.
The Hellenic Centre for Marine Research plans to provide a geophysics research boat in 2010 to measure the sub-bottom profiles to get sediment thickness in key areas around the submerged city, and confirm the position of the shoreline at different dates.

Sunday 9 November 2008


Credit : Professor Franco Rollo, University of Camerino.

The 5,300 year old human mummy – dubbed Öetzi or 'the Tyrolean Iceman' – is highly unlikely to have modern day relatives, according to new research published today.
A team comprising scientists from Italy and the UK has sequenced Öetzi's entire mitochondrial DNA (mtDNA) genome - which is passed down through the maternal line – and found that he belonged to a genetic lineage that is either extremely rare, or that has died out.
Published in this month's issue of Current Biology, the research has generated the oldest complete Homo sapiens mtDNA genome to date, and overturns previous research conducted in 1994 on a small section of Öetzi's mtDNA, which suggested that relatives of Öetzi may still exist in Europe.
"Changes arise only gradually in mitochondrial DNA as it is passed down the generations," says co-author Professor Martin Richards of the University of Leeds' Faculty of Biological Sciences, "and so it provides an effective way of tracking ancestry through the female line across many thousands of years, as well as examining evolutionary relatedness across human populations."
The team, led by Professor Franco Rollo at the University of Camerino and Dr Luca Ermini working at both Camerino and Leeds, used powerful new technologies to sequence Öetzi's mtDNA and match it with a modern day haplogroup – in genetic terms, a group that shares a common ancestral DNA sequence. He belonged to a branch of haplogroup K1, which is still common throughout Europe today. However, almost all members of K1 sampled from modern Europeans belong to one of three sub-lineages, whereas Öetzi's lineage was completely distinct.
After death DNA begins to degrade immediately, so ancient DNA is very fragmented and any study of it has to be completed in hundreds of sections. For this research the team tested around 250 fragments, each of which had to be sequenced many times to ensure the results were not distorted.
"Our analysis confirms that Öetzi belonged to a previously unidentified lineage of K1 that has not been seen to date in modern European populations. The frequency of genetic lineages tends to change over time, due to random variations in the number of children people have - a process known as 'genetic drift' - and as a result, some variants die out. Our research suggests that Öetzi's lineage may indeed have become extinct," says Prof Richards.
"We'll only know for sure by sampling intensively in the Alpine valleys where Öetzi was born. However, our results do suggest that studies of ancient samples can fill in gaps in our knowledge left open simply because many genetic lineages died out thousands of years ago. The techniques we've used here are potentially applicable to many other ancient remains."
Öetzi's mummified remains were discovered in September 1991 in the Eastern Alps near the Austro-Italian border. He was approximately 46 years old when he died, and examinations revealed that he had been severely wounded by an arrow and possibly finished off with a mace blow to the face. He is estimated to have lain undiscovered for approximately 5,300 years. His body was almost wholly preserved, together with an array of clothes and weapons, providing an unprecedented insight into the Late Neolithic or Copper Age in Europe. Since 1998 he has been on display at the South Tyrol Museum of Archaeology in Bolzano, Italy.


Source :Eurekalert 2008

Sunday 6 April 2008

Tiny Bug Found In Grand Canyon Region Cave Suggests Big Biodiversity


The discovery of a new genus of a tiny booklouse from a northern Arizona cave may lead to further protection for cave ecosystems.

J. Judson Wynne, a Northern Arizona University doctoral student and cave research scientist with the U.S. Geological Survey's Southwest Biological Science Center, and Kyle Voyles, a cave researcher from Parashant National Monument, recently discovered a new genus of psocopteran (booklouse) from a cave on the western edge of the Grand Canyon-Parashant National Monument.

This discovery represents only the third known living genera in the Family Sphaeropsocopsis. There are two other genera, which are known from fossils in amber dating back to early Cretaceous Period around 125 million years ago. Whether this finding represents a relict species researchers cannot yet say. It will require further investigation to discover if this is a species that has survived while other related ones have become extinct.

This is the third new genus of invertebrates found by the two scientists since 2006. Wynne and Voyles discovered a new cricket genus and a new millipede genus in Grand Canyon region caves. They also have unearthed 15 new insect species from Grand Canyon region caves.

"I am hopeful these findings will help cave ecosystems get a seat at the conservation table," Wynne said. "We want to see cave ecosystems factored into regional conservation management planning."

Edward Mockford, a taxonomist from Illinois State University, will soon release a name for the new genus. He said the booklouse is from the family Sphaeropsocopsis, but is distinguished from other genera by its unusual wing structure.

"In the past, very little attention was given to cave ecosystems," Voyles said. "It was thought that caves couldn't contain a significant biodiversity, so they were mostly ignored. These newly discovered ecosystems are now the principal management concern for these caves and will no longer being ignored."

Wynne said that this discovery of another new genus living in a fragile cave ecosystem may help scientists begin to piece together the unique biodiversity and communities that caves often support.

"Now that we have another new genus discovery, land managers are beginning to recognize the importance of cave ecosystems," Wynne explained. "We are working with them on developing biodiversity inventory and monitoring strategies, and ways to monitor visitor impacts."

Source: APA, North Arizona University (2008, April 4). Tiny Bug Found In Grand Canyon Region Cave Suggests Big Biodiversity. ScienceDaily.

Pre-Clovis Human DNA Found In 14,300-year-old Faeces


DNA from dried human excrement recovered from Oregon's Paisley Caves is the oldest found yet in the New World -- dating to 14,300 years ago, some 1,200 years before Clovis culture -- and provides apparent genetic ties to Siberia or Asia, according to an international team of 13 scientists.

Among the researchers is Dennis L. Jenkins, a senior archaeologist with the University of Oregon's Museum of Natural and Cultural History, whose summer field expeditions over two summers uncovered a variety of artifacts in caves that had caught the scientific attention of the UO's Luther Cressman in the 1930s.

The Paisley Caves are located in the Summer Lake basin near Paisley, about 220 miles southeast of Eugene on the eastern side of the Cascade Range. The series of eight caves are westward-facing, wave-cut shelters on the highest shoreline of pluvial Lake Chewaucan, which rose and fell in periods of greater precipitation during the Pleistocene.

The team's extensively documented analyses on mitochondrial DNA -- genetic material passed on maternally -- removed from long-dried feces, known as coprolites, were published online April 3 in Science Express ahead of regular publication in the journal Science.

"The Paisley Cave material represents, to the best of my knowledge, the oldest human DNA obtained from the Americas," said Eske Willerslev, director of the Centre for Ancient Genetics at Denmark's University of Copenhagen. "Other pre-Clovis sites have been claimed, but no human DNA has been obtained, mostly because no human organic material had been recovered."

Willerslev visited the UO in 2004 to obtain samples for DNA analyses after word spread among archaeologists and anthropologists about Jenkins' discoveries. A Danish team, led by Willerslev, examined 14 coprolites -- initially using multiplex polymerase chain reaction to rapidly amplify DNA and a minisequencing assay -- that were found by Jenkins and colleagues during summer field work in 2002 and 2003.

A lengthy analysis, including the collection of DNA samples from 55 UO students, supervisors, and site visitors and 12 Danish DNA researchers, was done to screen for modern DNA contamination. From that analysis, six coprolites containing the ancient DNA were radiocarbon dated using accelerator mass spectrometry and calendar calibrated to between 1,300 and 14,300 years ago.

"Of these, half date from the early arrival time," Jenkins said. "All six coprolites containing ancient DNA underwent additional testing at two independent labs. Three of the six also contained DNA similar to red fox, coyote or wolf." The researchers suggest that these early Americans ate the animals or that the animals urinated on the human feces during times of non-human habitation.

The DNA testing indicated that the feces belonged to Native Americans in haplogroups A2 and B2, haplogroups common in Siberia and east Asia.

Clovis culture began sometime between 13,200 and 12,900 years ago, according to a re-evaluation of Clovis evidence published in Science (Feb. 23, 2008) by Michael R. Waters of Texas A&M University and Thomas W. Stafford Jr. of Stafford Research Laboratories in Colorado.

Skeletal remains dating to Clovis culture have proven elusive, leaving researchers with little hard evidence beyond tell-tale cultural components such as the distinctive fluted Clovis points and other tools.

Exactly who these people living in the Oregon caves were is not known, Jenkins said. In their conclusion, the authors wrote: "The Paisley Caves lack lithic tool assemblages, thus the cultural and technological association of the early site occupants, and their relationship to the later Clovis technology are uncertain."

"All we're doing in this paper is identifying the haplogroups," Jenkins said in an interview. "We are not saying that these people were of a particular ethnic group. At this point, we know they most likely came from Siberia or Eastern Asia, and we know something about what they were eating, which is something we can learn from coprolites. We're talking about human signature.

"If our DNA evidence and radiocarbon dating hold up on additional coprolites that are now undergoing testing at multiple labs, then we have broken the Clovis sound barrier, if you will," he said. "If you are looking for the first people in North America, you are going to have to step back more than 1,000 years beyond Clovis to find them."

The UO's Cressman was lured to the area after being told about a woman who was digging in the caves for artifacts and began uncovering large bones, Jenkins said. Cressman, an anthropologist, died in April 1994 after 35 years on the UO faculty.

During the two summers of fieldwork, Jenkins, colleagues and students, working in four of the caves, retrieved manufactured threads of sinew and plant fibers, hide, basketry, cordage, rope, wooden pegs, animal bones, two forms of projectile point fragments and diverse kinds of feces. These items were found "in an unbroken stratigraphic sequence spanning the late Pleistocene and Holocene," the researchers wrote in the study. Some of the thread is narrower than that holding buttons on many shirts today and date back 12,750 years, Jenkins said.

"To find these threads was just incredible," said Jenkins, who directs the Northern Great Basin Archaeological Field School. "We found a little pit in the bottom of a cave. It was full of camel, horse and mountain sheep bones, and in there we found a human coprolite. We radiocarbon-dated the camel and mountain sheep bones, as well as the coprolite, to 14,300 years ago."

With radiocarbon dating adjusted to calendar years, the materials date back to about 14,400 years ago, he added. Such a dating puts the Oregon site into about the same time period as Chile's Monte Verde site.

The UO's Cressman reported his discoveries in 1940, but his conclusions on material he found were not widely accepted because of a lack of solid documentation. "Cressman was correct about the association of human cultural remains with Pleistocene animals such as the now extinct camels, horses, and bison that once ranged the plain in front of the Paisley Caves, but it has taken nearly 70 years and the development and application of new scientific methods to prove it," Jenkins said.

"Had the human coprolites at the Paisley Caves not been analyzed for DNA and subjected to rigorous dating methodology," he added, "the pre-Clovis age of the artifacts recovered with the megafaunal remains could not have been conclusively proven. In other words, the pre-Clovis-aged component of this site could very well have been missed or dismissed by archaeologists."

Co-authors with Jenkins and Willerslev were: M. Thomas P. Gilbert, Philip Francis Thomsen, Jonas Binladen, all of Willerslev's lab; Anders Gotherstrom of Uppsala University, Sweden; Nuria Naveran of the University of Santiago de Compostela, Spain; Juan J. Sanchez of the National Institute of Toxicology and Forensic Science, Tenerife, Spain; Michael Hofreiter of the Max Planck Institute for Evolutionary Anthropology, Leipzig, Germany; Thomas F.G. Higham of the Research Laboratory for Archaeology and the History of Art, Oxford, UK; Robert M. Yoye II and Robert Parr, both of the department of sociology/anthropology at California State University, Bakersfield, Calif.; and Linda Scott Cummings of the Palaeo Research Institute, Golden, Colo.

The research was partially funded by the U.S. Bureau of Land Management for the field work. Financial support also was provided by the UO Museum of Natural and Cultural History, the Association of Oregon Archaeologists and fellowships provided by Marie Curie Actions, a division of the Europe-based Community Research & Development Information Service.

Source:Adapted from materials provided by University of Oregon, via EurekAlert!, a service of AAAS.

Sunday 16 March 2008

Vikings did not dress the way we thought


Vivid colors, flowing silk ribbons, and glittering bits of mirrors - the Vikings dressed with considerably more panache than we previously thought. The men were especially vain, and the women dressed provocatively, but with the advent of Christianity, fashions changed, according to Swedish archeologist Annika Larsson.

"They combined oriental features with Nordic styles. Their clothing was designed to be shown off indoors around the fire," says textile researcher Annika Larsson, whose research at Uppsala University presents a new picture of the Viking Age.

She has studied textile finds from the Lake Mälaren Valley, the area that includes Stockholm and Uppsala and was one of the central regions in Scandinavia during the Viking Age. The findings, some of which were presented in her dissertation last year, show that what we call the Viking Age, the years from 750-1050 A.D., was not a uniform period. Through changes in the style of clothing we can see that medieval Christian fashions hit Sweden as early as the late 900s and that new trade routes came into use then as well. The oriental features in clothing disappeared when Christianity came and they started to trade with the Christian Byzantine and Western Europe.

"Textile research can tell us more about the state of society than research into traditions. Old rituals can live on long after society has changed, but when trade routes are cut off, there's an immediate impact on clothing fashions," says Annika Larsson.

She maintains that Swedish Viking women in the pre-Christian period probably dressed much more provocatively than we previously believed. She bases her theory on a new find uncovered in Russian Pskov, close to Novgorod and the eastward trade routes then plied from Sweden. The find consists of extensive remnants of a woman's attire, which Annika Larsson claims does not square with the traditional picture of how Viking women dressed.


Swedish viking men's fashions were modeled on styles in Russia to the east. Archeological finds from the 900s uncovered in Lake Malaren Valley accord with contemporary depictions of clothing...


Previously it was thought that Viking women wore a long suspender (brace) skirt, with both the front and back pieces consisting of square sections, held together by a belt. Clasps, often regarded as typical of the Viking Age, were attached to the suspenders roughly at the collar bone. Under this dress they wore a linen shift, and on top of it a woolen shawl or sweater.

"The grave plans from excavations at Birka outside Stockholm in the 19th century show that this is incorrect. The clasps were probably worn in the middle of each breast. Traditionally this has been explained by the clasps having fallen down as the corpse rotted. That sounds like a prudish interpretation," says Annika Larsson.

She maintains instead that the Birka women's skirts consisted of a single piece of fabric and were open in front. The suspenders held up the train and functioned as a harness that was fastened to the breasts with the clasps. Annika Larsson's theory is strengthened by that fact that a number of female figures have been preserved whose outfits both have trains and are open in front. But if we are to believe the archeological finds, this style of clothing disappeared with the advent of Christianity.

"It's easy to imagine that the Christian church had certain reservations about clothing that accentuated the breasts in this way and, what's more, exposed the under shift in front. It's also possible that this clothing was associated with pre-Christian rituals and was therefore forbidden," she believes.

Source:Eurekalert 2008

Thursday 14 February 2008

Cleopatra's cosmetics and Hammurabi's Heineken

New study finds that branding is older than previously thought. From at least Bass Ale’s red triangle—advertised as “the first registered trademark”—commodity brands have exerted a powerful hold over modern Western society. Marketers and critics alike have assumed that branding began in the West with the Industrial Revolution. But a pioneering new study in the February 2008 issue of Current Anthropology finds that attachment to brands far predates modern capitalism, and indeed modern Western society.In “Prehistories of Commodity Branding,” author David Wengrow challenges the widespread assumption that branding did not become an important force in social and economic life until the Industrial Revolution. Wengrow presents compelling evidence that labels on ancient containers, which have long been assumed to be simple identifiers, as well as practices surrounding the production and distribution of commodities, actually functioned as branding strategies. Furthermore, these strategies have deep cultural origins and cognitive foundations, beginning in the civilizations of Egypt and Iraq thousands of years ago.Branding became necessary when large-scale economies started mass-producing commodities such as alcoholic drinks, cosmetics and textiles. Ancient societies not only imposed strict forms of quality control over these commodities, but as today they needed to convey value to the consumer. Wengrow finds that commodities in any complex, large society needs to pass through a "nexus of authenticity.” Through history, these have taken the form of “the bodies of the ancestral dead, the gods, heads of state, secular business gurus, media celebrities, or that core fetish of post-modernity, the body of the sovereign consumer citizen in the act of self-fashioning.” Although capitalism and branding find in each other a perfect complement, they have distinct origins. Wengrow shows that branding has for millennia filled a deep-seated need for us humans to find value in the goods that we consume.Sure to be provocative, “Prehistories of Commodity Branding” is necessary reading for a wide range of people, from those interested in the workings of ancient societies to anyone who is interested in understanding how marketing has developed into a powerful force in our lives.###David Wengrow is Lecturer at the Institute of Archaeology, University College LondonSponsored by the Wenner-Gren Foundation for Anthropological Research, Current Anthropology is a transnational journal devoted to research on humankind, encompassing the full range of anthropological scholarship on human cultures and on the human and other primate species. Communicating across the subfields, the journal features papers in a wide variety of areas, including social, cultural, and physical anthropology as well as ethnology and ethnohistory, archaeology and prehistory, folklore, and linguistics. For more information, please see our Web site: www.journals.uchicago.edu/CA.Wengrow, David “Prehistories of Commodity Branding” Current Anthropology 49:1 .
Sourced:Urekalert 14-Feb-2008.

Thursday 31 January 2008

Ancient Egyptian glassmaking recreated

The reconstructed kiln built by Dr. Paul Nicholson of Cardiff University and Dr. Caroline Jackson of Sheffield University.
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A team led by a Cardiff University archaeologist has reconstructed a 3,000-year-old glass furnace, showing that Ancient Egyptian glassmaking methods were much more advanced than previously thought. Dr Paul Nicholson, of the University’s
School of History and Archaeology, is leader of an Egypt Exploration Society team working on the earliest fully excavated glassmaking site in the world. The site, at Amarna, on the banks of the Nile, dates back to the reign of Akhanaten (1352 - 1336 B.C.), just a few years before the rule of Tutankhamun.
It was previously thought that the Ancient Egyptians may have imported their glass from the Near East at around this time. However, the excavation team believes the evidence from Amarna shows they were making it themselves, possibly in a single stage operation. Dr Nicholson and his colleague Dr Caroline Jackson of Sheffield University demonstrated this was possible, using local sand to produce a glass ingot from their own experimental reconstruction of a furnace near the site.
The team have also discovered that the glassworks was part of an industrial complex which involved a number of other high temperature manufacturing processes. The site also contained a potter’s workshop and facilities for making blue pigment and faience - a material used in amulets and architectural inlays. The site was near one of the main temples at Amarna and may have been used to produce materials in state buildings.
Dr Nicholson, who has been working at Amarna since 1983, said: “It has been argued that the Egyptians imported their glass and worked it into the artefacts that have been discovered from this time. I believe there is now enough evidence to show that skilled craftsmen could make their own glass and were probably involved in a range of other manufacturing industries as well.”
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Dr Nicholson has now written a book detailing the discoveries made at Amarna. Entitled Brilliant Things for Akhenaten, it is published by the Egypt Exploration Society (London) and available through Oxbow Books in the UK and The David Brown Book Company in the USA.


Source:Eurekalert December 2007