The second era of the Proterozoic eon, spanning 1.6 billion to 1 billion years ago, and the first era of Earth's history for which a fairly definitive geological record survives. It saw the breakup of the supercontinent Columbia, the assembly of the succeeding supercontinent Rodinia, and, in its rock record, some of the earliest evidence for sexual reproduction and multicellular organisms. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
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Start (Million Years Ago) End (Million Years Ago) Key EventWas the first era of Earth's history for which a fairly definitive geological record survives. 1 Mesoproterozoic
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Source Torridonian (Wikipedia)
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1. Mesoproterozoic (Wikipedia)
Wikimedia FoundationLead sectionQuote, Lead section
Was the first era of Earth's history for which a fairly definitive geological record survives.
Torridonian (Wikipedia)
Associated With: Torridonian, Lead, age MesoproterozoicQuote, Associated With: Torridonian, Lead, age Mesoproterozoic
Torridonian is the informal name given to a sequence of Mesoproterozoic to Neoproterozoic sedimentary rocks that outcrop in a strip along the northwestern coast of Scotland and some parts of the Inner Hebrides from the Isle of Mull in the southwest to Cape Wrath in the northeast.
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