High-resolution seismic models of the Nova Scotia margin reveal a role for magmatism in continental breakup, even at magma-poor sections of the eastern North American margin.
North America
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Crowdsourced Science Helps Map Vancouver’s “Smellscape”
Exposure to stinky odors can affect human health, but quantifying smells can be difficult.
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Melting Arctic Sea Ice Strengthens Tides
If climate change throws off the seasonal freeze-thaw cycle of Arctic sea ice, it could trigger a reinforcing cycle of sea ice melt in parts of the Canadian Arctic.
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The Great Unconformities?
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.
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An Iceberg May Have Initiated a Submarine Landslide
A new study shows that icebergs may initiate submarine landslides when they collide with the seafloor.
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An Ancient Meltwater Pulse Raised Sea Levels by 18 Meters
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.
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Why Trillions of Jellyfish Washed Ashore from Canada to California
Although warming oceans may make population booms and mass strandings more common, the species may ultimately be one of the beneficiaries of climate change.
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Breaking Up Is Hard to Do, Especially for Continents
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.
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A Dip in Atmospheric Carbon May Have Facilitated Dinosaur Dispersal
Herbivorous dinosaurs migrated north across Pangea beginning about 214 million years ago, coincident with a downturn in atmospheric carbon dioxide levels.
Posted inScience Updates
Geological Surveys Unite to Improve Critical Mineral Security
A three-nation consortium is pooling geological expertise and resources to address vulnerabilities in supplies of these crucial natural resources.