More than 700 million years ago, the Earth was plunged into a state that geologists call 'snowball Earth', when our planet was entirely encased in ice. This happened when the polar ice caps expanded so far that they joined up around the equator.
Snowball Earth: Researchers discover unique Scottish rocks record when Earth was first encased in ice retrieved 6 September 2024 from https://phys.org/news/2024-09-snowball-earth-unique-scottish-encased.html
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'Golden spike' showing the moment Earth turned into a giant snowball discovered in ancient Scottish rocksHannah Osborne is the planet Earth and animals editor at Live Science. Prior to Live Science, she worked for several years at Newsweek as the science editor. Before this she was science editor at International Business Times U.K. Hannah holds a master's in journalism from Goldsmith's, University of London.
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Scottish and Irish rocks confirmed as rare record of 'snowball Earth'A rock formation spanning Ireland and Scotland may be the world's most complete record of 'snowball Earth,' a crucial moment in planetary history when the globe was covered in ice, finds a new study led by UCL (University College London) researchers.
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Rare Record of Snowball Earth Confirmed in Scottish and Irish RocksResearchers examine rocks from before and after a major glaciation event called Snowball Earth to describe an evolutionary transition.
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Scottish and Irish rocks confirmed as rare record of 'snowball Earth'The study found that the Port Askaig Formation, composed of layers of rock up to 1.1 km thick, was likely laid down between 662 to 720 million years ago during the Sturtian glaciation -- the first of two global freezes thought to have triggered the development of complex, multicellular life.
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Uncovering “Snowball Earth”: Hidden Rock Record Unveils Secrets of Earth’s Deep FreezeScience, Space and Technology News 2024
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Earliest record of ‘snowball Earth’ revealed by 720-million-year-old rocksThe Port Askaig Formation reveals evidence of Earth's transition from a warm climate to a frozen snowball during the Sturtian glaciation.
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