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Mid Ocean Ridges

All articles tagged with #mid ocean ridges

science6 days ago•6 min saved

Ridge spreading unfolds in rapid bursts, forming new ocean floor

A 2024 French study near the Amsterdam–Saint Paul Plateau shows mid-ocean ridge spreading can occur in intense bursts: dyke intrusions, sudden subsidence of a magma reservoir, and meters of horizontal extension happened within days, with some events lacking seismic signals. About 150 million cubic meters of new material were produced, and the total extension equates to roughly 38 years of normal spreading, suggesting ocean-floor creation may be episodic rather than steady.

via Ars Technica|

#dyke-intrusion #magma-reservoir #mid-ocean-ridges

science5 months ago•51 min saved

Earth’s Plate Dance Could Be a Major Climate Driver

A new study using computer models shows that Earth's plate tectonics—especially mid-ocean ridges and continental rifts—play a larger role in shaping global climate than previously thought by guiding the deep carbon cycle: carbon stored in seafloor sediments is buried and later released via subduction, driving greenhouse and icehouse periods over the last 540 million years and challenging the view that volcanic arcs are the primary CO2 source, with implications for future climate models.

via Space|

#carbon-cycle #climate-change #deep-carbon-cycle