Tuesday, May 11, 2021
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Geology Page

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A cross-section of an 18.5 million-year-old fossil of Ampelorhiza heteroxylon. Credit: Nathan Jud/Provided
Fossils

18.5 million year old vine fossil identified as new species

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The Earth has a layered internal structure with the crust, upper mantle, mantle transition zone, lower mantle, outer core, and inner core from the surface to the center. In the Earth’s formation stage at approximately 4.6 billion years ago, the heavy metal components were separated from silicates and sank in the magma ocean, and a core formed at the center of the Earth. In this core-mantle separation process, partitioning of noble gases between the core and mantle occurred. Credit: Taku Tsuchiya, Ehime University
Earth

A deep reservoir of primordial helium in the Earth

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Hesperornis image provided by the Yale Peabody Museum of Natural History. (Photo: Robert Lorenz)Hesperornis image provided by the Yale Peabody Museum of Natural History. (Photo: Robert Lorenz)
Dinosaur

What can a dinosaur’s inner ear tell us? Just listen

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The last common ancestor of chimpanzees and humans represents the starting point of human and chimpanzee evolution. Fossil apes play an essential role when it comes to reconstructing the nature of our ape ancestry. Printed with permission from © Christopher M. Smith
Fossils

Most human origins stories are not compatible with known fossils

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An enhanced image of Bicellum showing an outer wall of sausage-shaped cells enclosing an inner cell mass. Credit: Boston College
Fossils

Microfossil found in Scottish Highlands could be a new insight into...

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Researchers also want to encourage the locals to develop practical evacuation plans to help them feel less pessimistic about their survival odds. Credit: Katsushika Hokusai
Earthquake

Previously unrecognized tsunami hazard identified in coastal cities

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A close-up image of bladed barite crystals in the Mapepe Formation in the Barberton Greenstone Belt of South Africa. Credit: Desiree Roerdink
Continents

New research uncovers continental crust emerged 500 million years earlier than...

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Seismogram
Earthquake

Earthquake, tsunami hazards from subduction zones might be higher than current...

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Fracking
Earthquake

Local impacts from fracking the Eagle Ford

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"Hollywood" specimen, same species as Teratophoneus, discovered approximately two miles north of the "Rainbows and Unicorns Quarry" on Grand Staircase-Escalante National Monument. Credit: U.S. Bureau of Land Management
Dinosaur

Fearsome tyrannosaurs were social animals, study shows

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Illustration showing how the three new species of fossil cloud rats might have looked. Credit: © Velizar Simeonovski, Field Museum.
Fossils

Fossils of ‘giant cloud rats’ discovered in Philippine caves

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Rafinesquina, seen in this close-up shot, was an ancient genus of brachiopod belonging to order Strophomenida. This order survived two mass extinction events, but the second represented a ‘death sentence’ from which they were unable to recover diversity, persisting for another hundred million years as a ‘dead clade walking’ before their eventual extinction. IMAGE: Provided by Benjamin Barnes
Fossils

New insights into mass extinctions

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Bathymetric chart of a part of the Red Sea. Source GEOMAR.
plate tectonics

Red Sea is no longer a baby ocean

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Experimental setup for 3D seismic model.
Earthquake

3D printed models provide clearer understanding of ground motion

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From left, University of Wyoming students Shane Scoggin, Adam Trzinski and Jessie Shields are part of new research investigating crustal melting in western North America. Here, they examine igneous rocks in the Snake Range of Nevada. Credit: Jay Chapman
Earth

Scientists probe mysterious melting of Earth’s crust in western North America

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West Mato Volcano erupting in 2009, courtesy of the National Oceanic and Atmospheric Administration.
Volcanoes

Energy unleashed by submarine volcanoes could power a continent

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Over approximately 2.5 million years, North America likely hosted 2.5 billion Tyrannosaurus rexes, a minuscule proportion of which have been dug up and studied by paleontologists, according to a UC Berkeley study. (Image by Julius Csotonyi, courtesy of Science magazine)
Dinosaur

How many T. rexes were there? Billions

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The world's smallest stegosaur footprint (less than 6 cm long), Xingjiang, China. Photo credit - Lida Xing.
Dinosaur

Tiny cat-sized stegosaur leaves its mark

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Seismogram
Earthquake

Study reveals the workings of nature’s own earthquake blocker

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Viti Crater (formed in the 1724 event), where the Iceland Deep Drilling Project accidentally drilled into magma in 2009. They were drilling there originally to explore the potential for geothermal energy. Credit: Shane Rooyakkers.
Volcanoes

Hidden magma pools pose eruption risks that we can’t yet detect

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