Using extremely precise uranium-lead mass spectrometry, the researchers determined that both the volcanic rocks and glacial sediments were deposited about 716.5 million years ago—during the ...

Ancient glacier sediment may be 2.9 billion years old. For their study, the scientists unearthed shale deposits and analyzed core samples from field sites in northeastern South Africa that are ...

It was zebra-striped, with layers of dark and light sediments running horizontally up the slope. Missoula is the second-biggest city in Montana, with a population of about 75,000, and it sits in a ...

Geologists found glacial till as expected, but also found weathering from a separate glacial sediment deposited at an unexpected depth — potential evidence of a previously unknown advance of a ...

The sediments analyzed are between 20,000 and 17,000 years old and were deposited in the cave towards the end of the last ice age. They have remained there untouched to this day.

03/24/2025 By Matthew Witscheber. The Kennedy College of Sciences, Department of Earth, Environmental and Atmospheric Sciences, invites you to attend a Master's Thesis Defense by Matthew Witscheber on ...