Grand Canyon, Arizona

Geologists dig into Grand Canyon’s mysterious gap in time

Core samples for Oceanic Anoxic Event 1a. Credit: Elisabetta Erba.

Volcanism drove rapid ocean deoxygenation during the time of the dinosaurs

Continental volcanic arcs such as this one in Kamchatka, Russia, are rapidly weathered, driving CO2 removal from the atmosphere over geological time. Credit: Tom Gernon, University of Southampton

Volcanoes acted as a safety valve for Earth’s long-term climate

A map of the World Ocean Floor. Credit: Library of Congress, Geography and Map Division

Geologists take Earth’s inner temperature using erupted sea glass

A wide-angle aerial view looks southeast over Kīlauea’s summit caldera on July 22, 2021. Large cliffs formed during the 2018 collapses are visible on the left side of the photo. A recently active lava lake is visible in the lower right. (Image credit: M. Patrick, USGS)

Giant friction experiment at Kilauea volcano

The cliffs of the volcanic island of Santorini showing the layers of deposits from past volcanic eruptions. Credit: co-author Dr. Ralf Gertisser (Keele University).

Sea levels influence eruptions on volcanic island

A view of Kīlauea’s summit lava lake. The lava lake is contained within a crater, which is set within the larger Halema‘uma‘u Crater. New research aims to understand the activity that led to the eruption in 2018 in Kīlauea’s lower East Rift Zone. Credit: USGS

Volcanic tremor and deformation at Kīlauea

Skull fossils of amphibian. Credit: Field Museum of Natural History, Chicago

Skull of 340 million year old animal digitally recreated, revealing secrets...

Two fossils of Brooksella alternata.

Icy waters of ‘Snowball Earth’ may have spurred early organisms to...

Tree stomp in lignite deposits. Credit: Vittoria Lauretano

Decline in CO2 cooled Earth’s climate more than 30 million years...

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