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Radiocarbon Dating

All articles tagged with #radiocarbon dating

Bow and Arrow Arrive in North America About 1,400 Years Ago, Study Finds
science23 days ago

Bow and Arrow Arrive in North America About 1,400 Years Ago, Study Finds

Radiocarbon dating of carefully selected North American weapons places the bow and arrow’s emergence at roughly 1,400 years ago. Adoption was rapid in the south, where the bow quickly supplanted the atlatl, while in the north the bow coexisted with the atlatl for centuries, implying a single origin with regionally varying diffusion. The study highlights a context-dependent pattern of technological evolution influenced by environment and social networks, with faster replacement in some regions and prolonged toolkit diversity in others.

via Ars Technica|
#atlatl#bow-and-arrow#diffusion
science24 days ago

Bow and Arrow Transform Western North America About 1,400 Years Ago

A study analyzing 136 radiocarbon-dated organic weapons from western North America shows the bow-and-arrow spread across the region roughly 1,400 years ago, quickly replacing the atlatl in the southern parts while northern areas used both for over a thousand years, suggesting rapid diffusion through cultural networks with regional variation in adoption.

via Ground News|
#archaeology#bow-and-arrow#cultural-diffusion
28,000-Year-Old Lapedo Child Re-dating Narrows Neanderthal Hybrid Debate
science1 month ago

28,000-Year-Old Lapedo Child Re-dating Narrows Neanderthal Hybrid Debate

A new radiocarbon reassessment using hydroxyproline dating places the Lagar Velho burial in central Portugal at about 27,800–28,600 calibrated years ago, well after Neanderthals had vanished in Iberia, which narrows the window for late hybridization and suggests any Neanderthal traits reflect inherited modern-human ancestry rather than a recent interbreeding event; the find remains morphological without ancient DNA, and future work may use proteomics or DNA recovery to clarify admixture.

via The Daily Galaxy|
#gravettian#lapedo-child#neanderthal-admixture
Ancient Tree Rings Uncover Solar Superstorm from 664 BCE
science1 year ago

Ancient Tree Rings Uncover Solar Superstorm from 664 BCE

Researchers from the University of Arizona have identified a massive solar storm, known as a Miyake Event, that occurred around 664-663 BCE by analyzing tree rings and ice cores. These events, characterized by spikes in radioactive carbon-14 and beryllium-10 isotopes, are rare and could have catastrophic effects on modern technology if they occurred today. The study highlights the use of natural time capsules like ancient trees and ice cores to uncover historical solar activity.

via Livescience.com|
#miyake-events#radiocarbon-dating#science
35,000-Year-Old Saber-Toothed Kitten Discovered in Siberian Permafrost
science1 year ago

35,000-Year-Old Saber-Toothed Kitten Discovered in Siberian Permafrost

Scientists have examined a 35,000-year-old saber-toothed kitten found in Siberian permafrost, revealing significant differences from modern lion cubs. The mummified remains, including fur and muscle, allowed researchers to study its unique physical traits, such as a massive neck and broad paws. Radiocarbon dating confirmed the kitten belonged to the extinct species Homotherium latidens, providing rare insights into these prehistoric predators.

via The Washington Post|
#homotherium-latidens#paleontology#radiocarbon-dating
Cosmic Rays Accurately Date 7,000-Year-Old Greek Settlement
archaeology1 year ago

Cosmic Rays Accurately Date 7,000-Year-Old Greek Settlement

Researchers at the University of Bern have precisely dated a prehistoric farming settlement in northern Greece to between 5328 and 5140 BC using dendrochronology and a significant radiocarbon spike from a cosmic event in 5259 BC. This breakthrough provides a reliable chronological reference for other Southeast European archaeological sites and marks a paradigm shift in dating prehistoric periods, especially in regions without consistent tree-ring chronologies.

via SciTechDaily|
#ancient-greece#archaeology#dendrochronology
"Easter Island's Undeciphered Script: A Pre-European Enigma"
archaeology2 years ago

"Easter Island's Undeciphered Script: A Pre-European Enigma"

Radiocarbon dating of a rongorongo tablet from Easter Island suggests that the undeciphered script may predate European colonization, indicating it could be one of the few independently invented writing systems. The tablet's wood dates back to the late 15th or early 16th century, centuries before Europeans arrived on Rapa Nui, supporting the idea that the script was an original invention by the islanders. The intricate glyphs of the rongorongo script bear no resemblance to European letters, further suggesting independent development. The study's findings provide strong evidence for the script's independent invention and offer new insights into the history of writing systems.

via Livescience.com|
#archaeology#easter-island#independent-invention
"Groundbreaking Fossil Discoveries Revolutionize Human Evolution Narrative"
science2 years ago

"Groundbreaking Fossil Discoveries Revolutionize Human Evolution Narrative"

A new study from researchers at the Australian National University and the Natural History Museum of London has used improved dating techniques to reanalyze old fossils, leading to significant revisions in the timeline of human evolution. The researchers employed a technique called U-series dating, which allowed for more accurate dating of the fossils. The reanalysis revealed that the remains of Homo luzonensis, a newly discovered archaic human species, are at least twice as old as previously thought. Additionally, the study clarified the age discrepancy between Neanderthal and Homo sapiens skulls found in Greece, identifying the Homo sapiens skull as the oldest fossil of the species ever found in Europe. These findings highlight the importance of continually reevaluating and refining our understanding of human evolution.

via IFLScience|
#fossils#homo-sapiens#human-evolution
"Unearthing France's Carbon-Based Cave Art Unlocks Precise Radiocarbon Dating"
archaeology2 years ago

"Unearthing France's Carbon-Based Cave Art Unlocks Precise Radiocarbon Dating"

Researchers have made the first discovery of carbon-based cave art in France's Dordogne region, specifically in the Font-de-Gaume cave. This breakthrough could potentially allow for precise radiocarbon dating of the art, which has previously been challenging due to its coloration with iron- or manganese-oxide-based material. The findings open up new opportunities for reevaluating existing art in the region and improving our understanding of the creation phases and inter-regional comparisons of Paleolithic art. Non-invasive analytical methods, such as visible-light and infrared photography, portable X-ray fluorescence, and micro-Raman spectroscopy, were used to study the carbon-based drawings beneath the iron and manganese oxide-based pigments.

via Phys.org|
#archaeology#carbon-based-cave-art#dordogne-region