PNAS: Diamond peak confirmed at YDB — and Bronze Age collapse, perhaps?

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 Table 1.

Bement video

Earlier GSA abstract

Co-author spotlight: Andrew S. Madden


PNAS Lexus lane? 46,000 hits!


In 2007, scientists proposed that the start of the Younger Dryas (YD) chronozone (10,900 radiocarbon years ago) and late Pleistocene extinctions resulted from the explosion of a comet in the earths atmosphere. The ET event, as it is known, is purportedly marked by high levels of various materials, including nano-diamonds. Nanodiamonds had previously been reported from the Bull Creek, Oklahoma, area. We investigate this claim here by quantifying the distribution of nanodiamonds in sediments of different periods within the Bull Creek valley. We found high levels of nanodiamonds in YD boundary deposits, supporting the previous claim. A second spike in nanodiamonds during the late Holocene suggests that the distribution of nanodiamonds is not unique to the YD


Quantifying the distribution of nanodiamonds in
pre-Younger Dryas to recent age deposits along Bull Creek, Oklahoma Panhandle, USA
by George Howard

  • Trent Telenko

    Grrr… some text got cut off in my paste–

    “Thus, you would also see a lot more mud from the upper Mississippi than normal because the normal _plant cover was dead_.”

  • Dennis;Is there any guide lines for identifying meteorites vs other casual daek looking rock. I found a piece of rock while repairing storm runoff in my horse pasture and left it out for a good acid rain wash off. After a good chemical cleaning I noticed it looked like it had been exposed to extreme heat (melting).I took a magnet to it and it was magnetic. It looks like it could be slag cinder but I don’t have any on my property and I know of no one in the area that has any on theirs. The weight is slightly heavier than I would think a stone of its size (2″ dia”) would be. Any help would be appreciated.

  • Trent Telenko

    Would you believe Neandertal’s in Northern China?

    Neandertal trait in early human skull suggests that modern humans emerged from complex labyrinth of biology and peoples
    Date:July 7, 2014

    Source:Washington University in St. Louis

    Summary:Re-examination of a circa 100,000-year-old archaic early human skull found 35 years ago in Northern China has revealed the surprising presence of an inner-ear formation long thought to occur only in Neandertals.

  • Trent Telenko

    More “Overkill Hypothosis” anyone?

    Humans, not climate, to blame for Ice Age-era disappearance of large mammals, study concludes
    Date:June 4, 2014

    Source:Aarhus University

    Summary:Was it humankind or climate change that caused the extinction of a considerable number of large mammals about the time of the last Ice Age? Researchers have carried out the first global analysis of the extinction of the large animals, and the conclusion is clear — humans are to blame. The study unequivocally points to humans as the cause of the mass extinction of large animals all over the world during the course of the last 100,000 years.

    Journal Reference:

    1.C. Sandom, S. Faurby, B. Sandel, J.-C. Svenning. Global late Quaternary megafauna extinctions linked to humans, not climate change. Proceedings of the Royal Society B: Biological Sciences, 2014; 281 (1787): 20133254 DOI: 10.1098/rspb.2013.3254


  • Trent Telenko

    The Buttermilk Creek Complex in Texas has found a pre-Clovis culture in Texas, pre-Clovis by 2,5000 years

    “These new artifacts comprise what researchers are calling the Buttermilk Creek Complex, and details of its excavation will be reported in the 25 March issue of Science, which is published by AAAS, the nonprofit science society.”

    Artifacts in Texas predate Clovis culture by 2,500 years, new study shows

    Date:March 25, 2011
    Source:American Association for the Advancement of Science

    Summary:Researchers in Texas have discovered thousands of human artifacts in a layer of earth that lies directly beneath an assemblage of Clovis relics, expanding evidence that other cultures preceded the Clovis culture in North America.

  • Trent Telenko

    Grr…forgot to include this cite —

    Journal Reference:

    1.Michael R. Waters, Steven L. Forman, Thomas A. Jennings, Lee C. Nordt, Steven G. Driese, Joshua M. Feinberg, Joshua L. Keene, Jessi Halligan, Anna Lindquist, James Pierson, Charles T. Hallmark, Michael B. Collins, James E. Wiederhold. The Buttermilk Creek Complex and the Origins of Clovis at the Debra L. Friedkin Site, Texas. Science, 2011; 331 (6024): 1599-1603 DOI: 10.1126/science.1201855


  • Trent Telenko

    It appears that a child’s bones dated from the Clovis culture had had its genome mapped with “surprising” results.

    “Roughly estimated some 80 % of all present-day Native American populations on the two American continents are direct descendants of the Clovis boy’s family. The remaining 20 % are more closely related with the Clovis family than any other people on Earth, says Lundbeck Professor Eske Willerslev from the Centre for GeoGenetics at the Natural History Museum of Denmark, University of Copenhagen. This surprising result has now been published in the scientific journal Nature.”

    Genome of American Clovis skeleton mapped: Ancestor of most present-day Native American populations

    Date:February 12, 2014
    Source:University of Copenhagen

    Summary:The Clovis people were not the first humans in America, but they represent the first humans with a wide expansion on the North American continent — until the culture mysteriously disappeared only a few hundred years after its origin. Now genome mapping shows that some 80 percent of all present-day Native American populations on the two American continents are direct descendants of the Clovis boy’s family.

    Story Source:

    The above story is based on materials provided by University of Copenhagen. Note: Materials may be edited for content and length.


    Journal Reference:

    1.Morten Rasmussen, Sarah L. Anzick, Michael R. Waters, Pontus Skoglund, Michael DeGiorgio, Thomas W. Stafford, Simon Rasmussen, Ida Moltke, Anders Albrechtsen, Shane M. Doyle, G. David Poznik, Valborg Gudmundsdottir, Rachita Yadav, Anna-Sapfo Malaspinas, Samuel Stockton White V, Morten E. Allentoft, Omar E. Cornejo, Kristiina Tambets, Anders Eriksson, Peter D. Heintzman, Monika Karmin, Thorfinn Sand Korneliussen, David J. Meltzer, Tracey L. Pierre, Jesper Stenderup, Lauri Saag, Vera M. Warmuth, Margarida C. Lopes, Ripan S. Malhi, Søren Brunak, Thomas Sicheritz-Ponten, Ian Barnes, Matthew Collins, Ludovic Orlando, Francois Balloux, Andrea Manica, Ramneek Gupta, Mait Metspalu, Carlos D. Bustamante, Mattias Jakobsson, Rasmus Nielsen, Eske Willerslev. The genome of a Late Pleistocene human from a Clovis burial site in western Montana. Nature, 2014; 506 (7487): 225 DOI: 10.1038/nature13025


  • Trent Telenko

    I read this and think — where are the Clovis atl-atl and butchering marks in the bones?

    “Gomphotheres were smaller than mammoths — about the same size as modern elephants. They once were widespread in North America, but until now they seemed to have disappeared from the continent’s fossil record long before humans arrived in North America, which happened some 13,000 to 13,500 years ago, during the late Ice Age.

    However, the bones that Holliday and his colleagues uncovered date back 13,400 years, making them the last known gomphotheres in North America.

    The gomphothere remains weren’t all Holliday and his colleagues unearthed at the site, which they dubbed El Fin del Mundo — Spanish for The End of the World — because of its remote location.

    As their excavation of the bones progressed, they also uncovered numerous Clovis artifacts, including signature Clovis projectile points, or spear tips, as well as cutting tools and flint flakes from stone tool-making. The Clovis culture is so named for its distinctive stone tools, first discovered by archaeologists near Clovis, New Mexico, in the 1930s.

    Radiocarbon dating, done at the UA, puts the El Fin del Mundo site at about 13,400 years old, making it one of the two oldest known Clovis sites in North America; the other is the Aubrey Clovis site in north Texas.

    The position and proximity of Clovis weapon fragments relative to the gomphothere bones at the site suggest that humans did in fact kill the two animals there. Of the seven Clovis points found at the site, four were in place among the bones, including one with bone and teeth fragments above and below. The other three points had clearly eroded away from the bone bed and were found scattered nearby.

    “This is the first Clovis gomphothere, it’s the first archaeological gomphothere found in North America, it’s the first evidence that people were hunting gomphotheres in North America, and it adds another item to the Clovis menu,” Holliday said.”

    Bones of elephant ancestor unearthed: Meet the gomphothere

    Date:July 14, 2014
    Source:University of Arizona

    Summary:An ancient ancestor of the elephant, once believed to have disappeared from North America before humans ever arrived there, might actually have roamed the continent longer than previously thought. Archaeologists have uncovered the first evidence that gomphotheres were once hunted in North America.

    Story Source:

    The above story is based on materials provided by University of Arizona. The original article was written by Alexis Blue. Note: Materials may be edited for content and length.

    Cite This Page:

    MLAAPAChicagoUniversity of Arizona. “Bones of elephant ancestor unearthed: Meet the gomphothere.” ScienceDaily. ScienceDaily, 14 July 2014. .

  • Cevin Q

    Trent ,

    This paper, although about fishes of the san Joaquin river , has info on the Witt Clovis site, in Fresno county.
    In another paper the midden that was excavated, was said to be 1/4 mile long and six feet tall and 20 wide.
    Notice how thoroughly exploited the animal resources were, and also notice that human remains 15k years old were found and then there is that pesky mammoth tooth that is 60+k years old.

  • Cevin Q

    This paper discusses pre Clovis and extinctions with respect to the Mojave
    Unfortunately it doesmt slow cutting and pasting.

  • Cosmic Billards

    obviously yet another very advanced obviously bronze age civilization no one even knew of their existence or were even looking for them !

  • David L. Ulrich

    here’s one for the books — as soon as I get up off the floor — duh —

    you talk about a bunch of squirrelly people, BUT that being said — this is an eye opener for Dennis Stanford



  • Trent Telenko

    I don’t know where to drop this, so…

    New data for Pre-Clovis peoples hunting megafauna in Alberta :

    Archaeological discoveries at Wally’s Beach, Canada, provide the only direct evidence of horse and camel hunting in the Americas at the end of the last Ice Age. Here, seven horses and one camel were attacked and butchered near a river crossing by prehistoric hunters. New radiocarbon dates revise the age of these kill and butchering localities to 13,300 y ago. Other North American kill and butchering sites show that prehistoric hunters preyed on 6 of the 36 genera of large mammals, called megafauna, for at least 2,000 y before these animals became extinct, around 12,700 y ago. Accurate dating is necessary to build meaningful chronologies for the Ice Age peopling of the Americas and to understand megafauna extinctions.

  • Trent Telenko

    Another article on the same Alberta site.

    Prehistoric site in Alberta centuries older than previously thought
    The Canadian Press
    Published Monday, March 23, 2015 3:51PM EDT
    Last Updated Monday, March 23, 2015 5:07PM EDT

    A new way of dating a pile of ancient bones and stone tools is shedding light on the mysterious lives of the first Albertans.

    A prehistoric site where people hunted horses and camels along what is now the St. Mary River in the province’s south is centuries older than previously thought, said University of Calgary archeologist Brian Kooyman, co-author of a paper published Monday.

    That means the 13,300-year-old bones, along with stone choppers and knives used to butcher the animals, predate what was thought to be North America’s first identifiable ancient culture.

    “It’s quite awe-inspiring to stand there and know that these are the first Albertans,” Kooyman said.

    “We can see the butchered bones and we can see the tracks of the animals. We can actually see the footprints of camels and horses. It’s like they were here yesterday.”

    It’s the completeness of the site that makes it unique.

    It features the bones of seven horses and one camel — an animal that originated in North America and died out at the end of the ice ages. There are a variety of crude choppers and knives chipped from stone.

    There’s no doubt the bones are the remains of a successful hunt.

    “We have cut marks on horse bones and camel bones,” said Kooyman. “You can even see what people cut them up into, like roasts.”

    The site was originally found in 1999 by a schoolteacher out for a walk with his family. Normally submerged by the St. Mary reservoir, the spot known as Wally’s Beach was exposed by that year’s low water. The prairie wind blew away much of the dirt around it and left the artifacts in high relief.

    Kooyman excavated and studied the site, but contaminants in the samples originally led to a too-recent date, which was only corrected with more accurate radiocarbon dating. The new age, about 300 years older, led to Monday’s paper in the Proceedings of the National Academy of Sciences.

    The site offers haunting clues about the lives of those ancient hunters.

    The area hasn’t changed too much from all those thousands of years ago — a ramp on the riverbank where animals would have come to drink. Kooyman guesses it was a kill site for a small group of hunters.

    “What we’re probably looking at is something like three or four families of related people moving and working together as a hunting and gathering group.

    “They probably waited and ambushed them. They’ve probably been in the area long enough and have an understanding of the animal behaviour enough, that they know where to target.

    “We can actually see what they were doing. They’re hunting systematically and successfully and more than one animal species. I don’t think there’s anything really like it.”

    Kooyman said scientists have long thought members of the Clovis culture, marked by its long spearpoints, were the earliest identifiable group to people North America. While other sites had hinted at an earlier society, Wally’s Beach is the proof, he said.

    “I’m standing there and looking at a revolution in my understanding of things.”

  • Cevin Q

    I’ve mentioned that site in previous “Clovis” discussions,
    I’m pretty sure that site has been assigned to Clovis, by the findings of classic Clovis points.
    It’s just 300 years older, and the Clovis horizon has been pushed back by just about that much all over.
    Could be the Clovis horizon has been contaminated by an excess of extra terrestrial carbon, making it and other dates appear younger?
    By the way wait till I post the monograph mentioning 100k year old camps in San Diego and a 400k year old mammoth kill the in the LA Basin, excavated in the 80’s.

  • Steve Garcia

    Trent –

    I do not see the Clovis-Alberta horse kill as a significant contribution, just a fill-in. 13,300 ya is right in the middle of the known Clovis time. 6 out of 36 large fauna is far from any capability of arguing any Overkill meme as being real. So what that they hunted horses or camels? One killl site is one kill site. Meltzer showed that there were only TWELVE provable Clovis mammoth kill sites in a continent of 8,000,000 square miles or so. That is like saying that because homeless people ate out of a dumpster in New York City, that frogs in Nebrasks died because of homeless people.

    So my reaction is whoop-de-doo.