Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- adjective geology Of a
geologic period within theNeoproterozoic era from about 850 to 600 million years ago. - noun geology The Cryogenian period.
Etymologies
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Examples
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This glaciation-also known as the Cryogenian-is now claimed by the authors to have been global in extent.
Planetsave Michael Ricciardi 2010
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This glaciation-also known as the Cryogenian-is now claimed by the authors to have been global in extent.
Planetsave Michael Ricciardi 2010
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The time period immediately preceding the Ediacaran Period is called the Cryogenian Period for good reason.
PhysOrg.com - latest science and technology news stories 2009
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One consequence is that the only way to get to a “snowball earth” (times in the Cryogenian period when the earth was covered in ice even down to the tropics) is that some other cause of change has to happen fast – faster than the rock-themostat effect.
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One consequence is that the only way to get to a “snowball earth” (times in the Cryogenian period when the earth was covered in ice even down to the tropics) is that some other cause of change has to happen fast – faster than the rock-themostat effect.
AGU Day 2: The role of CO2 in the earth’s history | Serendipity 2009
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One consequence is that the only way to get to a “snowball earth” (times in the Cryogenian period when the earth was covered in ice even down to the tropics) is that some other cause of change has to happen fast – faster than the rock-themostat effect.
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Fossil steroids record the appearance of Demospongiae during the Cryogenian period.
Fossils of the Oldest Life on Earth Found Staq Mavlen 2009
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Fossil steroids record the appearance of Demospongiae during the Cryogenian period.
Archive 2009-02-01 Staq Mavlen 2009
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Earth's surface becoming frozen or nearly frozen approximately 650 years ago, at the end of the Cryogenian Age.
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Their findings, published in the journal Nature Geosciences, provide the first direct evidence that animal life existed before - and probably survived - the severe "snowball Earth" event known as the Marinoan glaciation that left much of the globe covered in ice at the end of the Cryogenian.
Earth News, Earth Science, Energy Technology, Environment News 2010
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