West Antarctica's history of rapid melting foretells sudden shifts in continent's 'catastrophic' geology

[marmar]

West Antarctica’s history of rapid melting foretells sudden shifts in continent’s ‘catastrophic’ geology
Published: December 22, 2025 3:06pm EST

Christine Siddoway
Professor of Geology, Colorado College
Anna Ruth (Ruthie) Halberstadt
Assistant Professor of Earth and Planetary Sciences, The University of Texas at Austin
Keiji Horikawa
Professor of Natural and Environmental Sciences, University of Toyama


(The Conversation) Due to its thick, vast ice sheet, Antarctica appears to be a single, continuous landmass centered over the South Pole and spanning both hemispheres of the globe. The Western Hemisphere sector of the ice sheet is shaped like a hitchhiker’s thumb – an apt metaphor, because the West Antarctic ice sheet is on the go. Affected by Earth’s warming oceans and atmosphere, the ice sheet that sits atop West Antarctica is melting, flowing outward and diminishing in size, all at an astonishing pace.

Much of the discussion about the melting of massive ice sheets during a time of climate change addresses its effects on people. That makes sense: Millions will see their homes damaged or destroyed by rising sea levels and storm surges.

But what will happen to Antarctica itself as the ice sheets melt?

In layers of sediment accumulated on the sea floor over millions of years, researchers like us are finding evidence that when West Antarctica melted, there was a rapid uptick in onshore geological activity in the area. The evidence foretells what’s in store for the future. ...................(more)

https://theconversation.com/west-antarcticas-history-of-rapid-melting-foretells-sudden-shifts-in-continents-catastrophic-geology-263895

[littlemissmartypants]

1. Interesting read. Thank you. ❤️