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Unraveling the Enigma of 'Snowball Earth' on Remote Isles
2024-08-16 05:50:08
Science
Geology
History

Unraveling the Enigma of 'Snowball Earth' on Remote Isles

Image used under license from Shutterstock.com

The Garvellach islands off Scotland's coast harbor a pristine record of Earth's 80-million-year 'Snowball Earth' ice age, shedding light on the emergence of early animal life. PhD student Elias Rugen's groundbreaking research hints at designating the islands a 'golden spike' site marking this geological epoch, potentially heightening scientific interest and funding.

Scottish and Irish rocks dating back 662-720 million years offer a unique glimpse into the Sturtian glaciation and the rapid transition from tropical climates to extreme glaciation. The retreat of ancient glaciers, influenced by the albedo effect, paved the way for the evolution of complex life post-thaw.

These findings may support the designation of a Global Boundary Stratotype Section and Point, solidifying the islands' role in Earth's ancient history.

The press radar on this topic:

Earth Sciences News - Earth and Environmental Sciences
15. August 2024 um 23:10

Scottish and Irish rocks confirmed as rare record of 'snowball Earth'

Port Askaig Formation 1.1km thick in Ireland and Scotland may record "snowball Earth" 662-720 million years ago; Garvellachs show transition from 70m of tropical carbonates to Sturtian glaciation; albedo effect caused rapid ice advance and retreat; catastrophic warming after deep freeze prompted evolution of complex life; uranium-lead dating of zircons provides age constraints; may provide evidence for Cryogenian GSSP; International Commission on Stratigraphy visited remote Garvellachs to assess..
BBC
15. August 2024 um 23:09

Remote isles may solve mystery of 'Snowball Earth'

Environment
The Garvellach islands off Scotland's west coast hold the best record of Earth's 80-million-year "Snowball Earth" ice age, which preceded the emergence of the first animal life. PhD student Elias Rugen's research, published in the Journal of the Geological Society of London, has identified the islands as a potential site for a "golden spike" to mark this major geological event, pending review by the Cryogenian sub-commission. Designation as a "golden spike" site would raise the islands' scient..
Yahoo!
15. August 2024 um 23:43

Scotland and Ireland rock formation dating back 'hundreds of millions of years' shows historic global freeze, study says

Rock formations in Scotland's Port Askaig and Garvellachs, and Ireland's Garbh Eileach, dating 662-720 million years, show transition to snowball Earth; ancient glaciers scraped away most evidence, but Scotland's rocks record this; first evidence of complex life appeared after planet thawed; research by UCL Earth Sciences' Elias Rugen and Graham Shields published in Journal of the Geological Society of London.
Yahoo!
15. August 2024 um 23:01

Scottish and Irish rocks may be rare record of ‘snowball Earth’, study suggests

The 1.1km-thick Port Askaig Formation in Scotland and Ireland, dated to 662-720 million years ago, may record a rare transition into 'snowball Earth' during the Sturtian glaciation of the Cryogenian Period. The Garvellachs section shows a unique record of this transition from a warm, tropical environment, unlike rocks in Namibia and North America. The retreat of the ice was thought to be rapid due to the albedo effect. The findings could provide evidence to designate the site as a Global Bound..
CW

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