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, 2008 The last ice age ended only a few thousand years ago, but there were earlier periods when the entire world was frozen, periods now known as Snowball Earth.
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Robust elements of Snowball Earth atmospheric circulation and oases for life
Journal of Geophysical Research D: Atmospheres, 2013 Atmospheric circulation in a Snowball Earth is critical for determining cloud behavior, heat export from the tropics, regions of bare ice, and sea glacier flow.
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Scientific American, 2011
The article discusses research by biogeochemists at the University of California, Riverside, investigating the link between the glacial runoff and the rapid evolution of animal life. Topics include the research methodology the team used to calculate the phosphorus concentrations of oceans one billion years ago, which is a key nutrient in biological ...
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The article discusses research by biogeochemists at the University of California, Riverside, investigating the link between the glacial runoff and the rapid evolution of animal life. Topics include the research methodology the team used to calculate the phosphorus concentrations of oceans one billion years ago, which is a key nutrient in biological ...
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2012
Our attempts to reconstruct the climate of the distant Archaean in Chapter 1 might seem a little like reading a volume of Tolstoy’s War and Peace recovered from a burnt-out house. Most of the pages have turned to ash, and only some scattered sentences remain on a few charred pages.
Jan Zalasiewicz, Mark Williams
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Our attempts to reconstruct the climate of the distant Archaean in Chapter 1 might seem a little like reading a volume of Tolstoy’s War and Peace recovered from a burnt-out house. Most of the pages have turned to ash, and only some scattered sentences remain on a few charred pages.
Jan Zalasiewicz, Mark Williams
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Science, 1998
In their article “A Neoproterozoic snowball Earth” (Reports, 28 Aug., p. [1342][1]), Paul F. Hoffman et al. report that global ice-house conditions existed during the Proterozoic, as inferred from negative carbon isotopes in carbonate rocks from Namibia.
Gregory S. Jenkins +1 more
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In their article “A Neoproterozoic snowball Earth” (Reports, 28 Aug., p. [1342][1]), Paul F. Hoffman et al. report that global ice-house conditions existed during the Proterozoic, as inferred from negative carbon isotopes in carbonate rocks from Namibia.
Gregory S. Jenkins +1 more
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Science, 2000
In his News Focus article “An appealing snowball Earth that's still hard to swallow” (10 Mar., p. [1734][1]), Richard A. Kerr provides an update on the “snowball Earth” hypothesis ([1][2]), which proposes that around 600 and 2400 million years ago in the Proterozoic era there were ...
Warwick F. Vincent +1 more
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In his News Focus article “An appealing snowball Earth that's still hard to swallow” (10 Mar., p. [1734][1]), Richard A. Kerr provides an update on the “snowball Earth” hypothesis ([1][2]), which proposes that around 600 and 2400 million years ago in the Proterozoic era there were ...
Warwick F. Vincent +1 more
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A carbon isotope challenge to the snowball Earth
Nature, 2011The snowball Earth hypothesis postulates that the planet was entirely covered by ice for millions of years in the Neoproterozoic era, in a self-enhanced glaciation caused by the high albedo of the ice-covered planet. In a hard-snowball picture, the subsequent rapid unfreezing resulted from an ultra-greenhouse event attributed to the buildup of volcanic
Sansjofre, P. +6 more
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Nature, 2000
The snowball Earth hypothesis posits an ice-covered planet. New climate simulations of ‘snowball’ conditions allow ice-free equatorial oceans that may be crucial for a theory about early animal evolution.
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The snowball Earth hypothesis posits an ice-covered planet. New climate simulations of ‘snowball’ conditions allow ice-free equatorial oceans that may be crucial for a theory about early animal evolution.
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Sedimentary challenge to Snowball Earth
Nature Geoscience, 2008Evidence from the magnetic field fossilized in sedimentary rocks suggests that, more than 600 million years ago, ice occupied tropical latitudes. A popular explanation for these findings, the Snowball Earth concept, envisages a fully frozen Earth for millions of years, caused by a runaway ice–albedo feedback. A rapid, catastrophic meltback at very high
Philip A. Allen, James L. Etienne
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