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North America

Photograph of The Great Unconformity visible in The Grand Canyon
Posted inEditors' Highlights

The Great Unconformities?

by Peter van der Beek 3 August 20219 December 2022

New thermochronology data and thermal history modeling from the Canadian Shield show that the Great Unconformity formed there later than elsewhere in North America and may represent another event.

The research vessel CCGS Hudson in Southwind Fjord, Baffin Island, with the iceberg that initiated a submarine landslide in the background.
Posted inNews

An Iceberg May Have Initiated a Submarine Landslide

by Andrew Chapman 20 July 20218 November 2022

A new study shows that icebergs may initiate submarine landslides when they collide with the seafloor.

Isolation lake in northwestern Scotland
Posted inNews

An Ancient Meltwater Pulse Raised Sea Levels by 18 Meters

by Tim Hornyak 2 June 202118 November 2021

Meltwater pulse 1A, a period of rapid sea level rise after the last deglaciation, was powered by melting ice from North America and Scandinavia, according to new research.

Several Velella velella on the beach
Posted inNews

Why Trillions of Jellyfish Washed Ashore from Canada to California

by Jenessa Duncombe 31 March 20216 December 2021

Although warming oceans may make population booms and mass strandings more common, the species may ultimately be one of the beneficiaries of climate change.

Aerial view Erta Ale volcano in Ethiopia
Posted inScience Updates

Breaking Up Is Hard to Do, Especially for Continents

by L. L. Worthington, B. D. Shuck, A. Bécel, Z. C. Eilon and C. Lynner 24 March 202125 October 2022

A decade-long research collaboration has revealed that the split between Africa and North America roughly 200 million years ago was more drawn out than previously thought.

A view of Sunset Crater, one of many scoria cones in the San Francisco volcanic fields spanning northern Arizona
Posted inNews

Ancient Eruption May Change Our Understanding of Modern Volcanoes

by Mara Johnson-Groh 5 February 202112 April 2022

Bubbles trapped in magma from a 1,000-year-old event reveal how scoria cones might erupt and what impact they may have on the landscape and atmosphere.

Background image of a mine overlain by images of a wind turbine, a computer tablet, a jet plane, an electric car charging port, and wheat in a field.
Posted inScience Updates

Geological Surveys Unite to Improve Critical Mineral Security

by P. Emsbo, C. Lawley and K. Czarnota 5 February 20216 December 2021

A three-nation consortium is pooling geological expertise and resources to address vulnerabilities in supplies of these crucial natural resources.

Satellite image of the Bering Strait
Posted inNews

Overturning in the Pacific May Have Enabled a “Standstill” in Beringia

by Bas den Hond 21 January 20212 September 2022

During the last glacial period, a vanished ocean current may have made the land bridge between Asia and the Americas into a place where humans could wait out the ice.

Watery mud accumulates between rows of crops.
Posted inNews

European Colonists Dramatically Increased North American Erosion Rates

by Rachel Fritts 11 January 202124 February 2022

Around 200 years ago, when conversion of land for agriculture became more widespread, the amount of sediment accumulating in riverbeds across the continent jumped tenfold.

Smoke rises from a singed landscape, meeting the clouds above a swath of boreal forest punctuated by lakes.
Posted inNews

Feedback Loops of Fire Activity and Climate Change in Canada

by Saima May Sidik 8 December 20201 April 2022

New research documents how a warming climate contributes to patterns in wildfire severity and frequency and how the fires contribute to climate change.

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RESEARCH SPOTLIGHTS
JGR: Solid Earth
“New Tectonic Plate Model Could Improve Earthquake Risk Assessment”
By Morgan Rehnberg

EDITORS' HIGHLIGHTS
AGU Advances
“Eminently Complex – Climate Science and the 2021 Nobel Prize”
By Ana Barros

EDITORS' VOX
Perspectives of Earth and Space Scientists
“New Directions for Perspectives of Earth and Space Scientists”
By Michael Wysession


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