Research2 sources
High-precision timeline helps clarify an ancient magma surge in the North Cascades
Phys.org ·
The Brief · written from 2 sources
- Researchers produced a high-precision timeline of an ancient magma surge in the North Cascades.
- Continental arcs can undergo episodic magma flare-ups, with magma flow into the continental crust reportedly reaching rates up to 20 times higher than normal.
- The study was published in the journal Tectonics and covered by Earth News and Eos.
Why it matters
Precise timelines of magma flare-ups help geoscientists test what drives episodic magma surges in continental arcs, which shape crustal growth over millions of years.
- #geology
- #volcanism
- #continental-arcs
- #north-cascades
- #magma
- #tectonics
Where oceanic crust subducts beneath continental crust, belts of volcanoes known as continental arcs can form. Located around the world, these arcs may undergo episodic magma flare-ups—dramatic surges in the flow of magma into the continental crust at rates up to 20 times higher…