Nav: Home

Distinctive projectile point technology sheds light on peopling of the Americas

July 11, 2018

In the lowest layer of the Area 15 archaeological grounds at the Gault Site in Central Texas, researchers have unearthed a projectile point technology never previously seen in North America, which they date to be at least 16,000 years old, or a time before Clovis. While clear evidence for the timing of the peopling of the Americas remains elusive, these findings suggest humans occupied North America prior to Clovis - considered one of the oldest, if not the oldest, Paleo-Indian culture of North America, and dated to around 11,000 years ago. In 2002, Area 15 of the Gault Site in Central Texas was identified as an ideal area to search for remnants of early cultures. The site features five distinct layers in the stratigraphic profile that showcase different cultural components, each with stratigraphic separation between the cultural depositions. Here, Thomas J. Williams and colleagues focused on the Gault Assemblage, the oldest deposit, which they compared to materials found in the Clovis layer (stratified above the Gault Assemblage). Based on optically stimulated luminescence (OSL) dating, the Gault Assemblage sediment samples are approximately 16- to 20-thousand-years-old, the authors say. Additionally, Williams et al. discovered ancient materials in the lowest Gault deposit, including small projectile point technology, biface stone tools, blade-and-core tools, and flake tools. The authors compared these Gault Assemblage artifacts to Clovis tools and found that the blade-and-core traditions, in particular, are similar to Clovis blade-and-cores (meaning they continued into the time of Clovis), but biface traditions underwent significant changes in the Clovis level. Meanwhile, the early projectile point technology is "unrelated" to Clovis at all, they say.

American Association for the Advancement of Science

Related Clovis Articles:

Abiraterone slows advanced prostate cancer, helps patients live longer
A clinical trial of nearly 2,000 men shows that adding abiraterone acetate (Zytiga) to a standard initial treatment regimen for high-risk, advanced prostate cancer lowers the relative risk of death by 37 percent.
Adding abiraterone to standard treatment improves prostate cancer survival by 40 percent
Adding abiraterone to hormone therapy at the start of treatment for prostate cancer improves survival by 37 percent, according to the results of one of the largest ever clinical trials for prostate cancer.
Kent State archaeologist explains innovation of 'fluting' ancient stone weaponry
Approximately 13,500 years after nomadic Clovis hunters crossed the frozen land bridge from Asia to North America, researchers are still asking questions and putting together clues as to how they not only survived in a new landscape with unique new challenges but adapted with stone tools and weapons to thrive for thousands of years.
University of South Carolina discovery of widespread platinum may help solve Clovis people mystery
No one knows for certain why the Clovis people and iconic beasts -- mastodon, mammoth and saber-toothed tiger -- living some 12,800 years ago suddenly disappeared.
Conflict and conformity, culture and technology ruled in rock's early days
While music critics may jeer pop acts of rock's early days, like Pat Boone, as lame takeoffs of the real thing, a Penn State cultural historian writes in his new book that they played a key role in bringing in white audiences to rhythm and blues, as well as paving the way for more black artists and harder white rock 'n' roll performers, like Elvis.
Textbook story of how humans populated America is 'biologically unviable,' study finds
Using ancient DNA, researchers have created a unique picture of how a prehistoric migration route evolved over thousands of years -- revealing that it could not have been used by the first people to enter the Americas, as traditionally thought.
Secretary Vilsack announces $36.5 million for specialty crop investments
Agriculture Secretary Tom Vilsack today announced 19 grants totaling $36.5 million for research and extension to support American farmers growing fruits and vegetables, tree nuts, dried fruits, horticulture and nursery crops including floriculture.
EARTH: On the trail of Hannibal's army -- and elephants -- in the Alps
Armed with information from Polybius' accounts of Hannibal's invasion of Italy, and the knowledge that tens of thousands of men, horses and elephants must have left some trace, geoscientists are hunting down possible locations using deduction and chemistry to test hypotheses.
Ice age bison fossils shed light on early human migrations in North America
Scientists using evidence from bison fossils have determined when an ice-free corridor opened up along the Rocky Mountains during the late Pleistocene.
Rucaparib shows clinical benefit in pancreatic cancer patients with BRCA mutation
The targeted therapy rucaparib, which has demonstrated robust clinical activity in ovarian cancer patients with a BRCA mutation, also showed promise in previously treated pancreatic cancer patients with the mutation.

Related Clovis Reading:

Best Science Podcasts 2019

We have hand picked the best science podcasts for 2019. Sit back and enjoy new science podcasts updated daily from your favorite science news services and scientists.
Now Playing: TED Radio Hour

Climate Crisis
There's no greater threat to humanity than climate change. What can we do to stop the worst consequences? This hour, TED speakers explore how we can save our planet and whether we can do it in time. Guests include climate activist Greta Thunberg, chemical engineer Jennifer Wilcox, research scientist Sean Davis, food innovator Bruce Friedrich, and psychologist Per Espen Stoknes.
Now Playing: Science for the People

#527 Honey I CRISPR'd the Kids
This week we're coming to you from Awesome Con in Washington, D.C. There, host Bethany Brookshire led a panel of three amazing guests to talk about the promise and perils of CRISPR, and what happens now that CRISPR babies have (maybe?) been born. Featuring science writer Tina Saey, molecular biologist Anne Simon, and bioethicist Alan Regenberg. A Nobel Prize winner argues banning CRISPR babies won’t work Geneticists push for a 5-year global ban on gene-edited babies A CRISPR spin-off causes unintended typos in DNA News of the first gene-edited babies ignited a firestorm The researcher who created CRISPR twins defends...