Geologists
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Earth
Geologists rewrite textbooks with new insights from Grand Canyon’s Cambrian rocks
GSA Today’s cover features the Cambrian period of the Grand Canyon. Credit: GSA Since shortly after our planet formed, Earth’s 4.6 billion year history has been dominated by single-celled life. About 500 million years ago, a dramatic event called the Cambrian “explosion” occurred, during which an incredible diversity of life forms was left behind in the rock record. These fossils…
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Earth
Geologists discover mysterious subduction zone beneath the Pacific Ocean, reshaping understanding of Earth’s interior
A map depicting the area where the ancient ocean floor was discovered. Credit: Jingchuan Wang, University of Maryland. Scientists at the University of Maryland have discovered evidence of an ancient ocean floor that sank deep into the Earth during the age of dinosaurs, casting doubt on existing theories about the Earth’s internal structure. This previously unstudied section of the ocean…
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Biology
Geologists and dentists create dental database to help identify missing military remains
Map showing the amount of heavy oxygen in local groundwater. Courtesy of the Bowen Institute. More than 80,000 American soldiers are missing from past wars, mostly from World War II. When remains are found, decomposition often makes identification difficult, but not impossible. Even without names, fingerprints or facial features, our histories remain locked in the atoms of the hardest tissue…
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Biology
Geologists and dentists create dental database to help identify missing military remains
Map showing the amount of heavy oxygen in local groundwater. Courtesy of the Bowen Institute. More than 80,000 American soldiers are missing from past wars, mostly from World War II. When remains are found, decomposition often makes identification difficult, but not impossible. Even without names, fingerprints or facial features, our histories remain locked in the atoms of the hardest tissue…
Read More »
