Tag

Isotope Analysis

All articles tagged with #isotope analysis

space1 month ago•11 min saved

Ancient Interstellar Visitor 3I/ATLAS Carries CO2-Rich Coma Through Our Solar System

3I/ATLAS is the third confirmed interstellar visitor to our solar system, on a hyperbolic trajectory that brought it to about 1.4 AU from the Sun in Oct 2025 and a close Earth approach in Dec 2025; Webb’s near-infrared spectra reveal a carbon dioxide–rich coma—with CO2 outweighing water by about eight to one—along with other volatiles, suggesting a nucleus intrinsically rich in CO2 and an origin well before the Sun. Isotopic and motion analyses hint at a formation roughly 10–12 billion years ago, making it possibly older than the Sun; SETI searches found no technosignatures, and the object is now outbound and fading. The event foreshadows more interstellar visitors detectable by future surveys like the Vera C. Rubin Observatory.

via Space Daily|

#3iatlas #comet #interstellar-object

science3 months ago•33 min saved

Neanderthals chased Europe’s giant elephants across hundreds of kilometres

A new fossil study shows Neanderthals hunted large straight-tusked elephants across Europe in an organized, long-distance pattern, traveling up to about 300 km between sites. Isotope analysis indicates these elephants migrated, while the hunters also consumed plant foods and may have used fire to shape habitats, revealing a more complex Neanderthal ecological footprint than previously thought.

via Yahoo|

#europe #isotope-analysis #migration

science6 months ago•3 min saved

Prehistoric Sea Monster Discovered in Non-Oceanic Fossil Site

New research indicates that mosasaurs, giant marine reptiles, could also live in freshwater environments, as evidenced by isotope analysis of fossil teeth from North Dakota, suggesting they were not limited to oceans and may have preyed on dinosaurs in rivers before their extinction.

via ScienceAlert|

#fossil #freshwater #isotope-analysis

archaeology10 months ago•2 min saved

Ancient Cow Tooth Sheds New Light on Stonehenge's Origins

A cow's tooth found near Stonehenge has revealed that the animal likely originated from Wales, supporting theories that cattle may have helped transport the stones across Britain, providing new insights into the construction of the ancient monument.

via The Art Newspaper|

#archaeology #cow-tooth #isotope-analysis

science10 months ago•15 min saved

Ancient Diets Unveiled Through Isotope Analysis

Stable isotope analysis of bones and teeth has provided new insights into the diets of ancient humans and Neanderthals, revealing dietary flexibility, meat consumption, and evolutionary adaptations over millions of years, with advanced techniques like CSIA-AA and enamel analysis expanding our understanding of early hominin diets and their role in human evolution.

via Chemistry World|

#ancient-dna #dietary-habits #human-evolution

science1 year ago•4 min saved

Ancient Child's Remains Reveal Mammoth-Centric Clovis Diet

Scientists have discovered direct evidence that ancient Clovis people in North America relied heavily on mammoths and other large animals for food, as revealed by stable isotope analysis of remains from a 13,000-year-old burial site in Montana. The study, published in Science Advances, shows that about 40% of the diet of a Clovis child's mother came from mammoths, with other large animals like elk and bison comprising the rest. This research provides insights into the rapid spread of humans across the Americas and the extinction of large ice age mammals.

via NBC Montana|

#ancient-diet #archaeology #clovis

archaeologyanthropology2 years ago•4 min saved

"Unraveling the 14,000-Year Journey of a Woolly Mammoth in Alaska"

A 14,000-year-old woolly mammoth tusk named Elma has provided insights into the relationship between early Alaskans and mammoths, as researchers discovered that human settlements in Alaska closely aligned with the movements of this mammoth. Using a new isotope analysis tool, researchers tracked Elma's movements and found that humans set up seasonal hunting camps where mammoths gathered. The study sheds light on the interaction between humans and mammoths, offering a new perspective on prehistoric life and challenging the traditional image of aggressive hunters, depicting a family instead.

via CNN|

#alaska #archaeologyanthropology #human-history

marine-biology2 years ago•5 min saved

Unveiling the Mystery: Pygmy Right Whales' Feeding Habits Revealed

Scientists have gained new insights into the feeding habits of pygmy right whales, the smallest and most mysterious species of baleen whales. Using an innovative approach that analyzed stable isotopes in the whales' baleen plates, researchers discovered that these whales primarily feed on copepods and krill in mid-latitude waters off the coast of southern Australia. Unlike other baleen whales, they do not undertake long-distance migrations to Antarctic waters. The study highlights the vulnerability of pygmy right whales to environmental changes and emphasizes the need for conservation efforts to protect these unique oceanic creatures.

via Earth.com|

#baleen-whales #conservation #feeding-habits