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100   $a20160829d2004      uy              
101 0 $aeng
135   $aur|||||||||||
181   $ctxt
182   $cc
183   $acr
200 14$aThe Extreme Proterozoic: Geology, Geochemistry, and Climate
210 31$a[Place of publication not identified]$cAmerican Geophysical Union$d2004
215   $a1 online resource (229 pages)
225 0 $aGeophysical monograph, 146
300   $aBibliographic Level Mode of Issuance: Monograph
311   $a0-87590-411-4 
330   $aEarth climate is uniquely determined at any time by the varied interactions of its components: lithosphere, biosphere, atmosphere, hydrosphere (ocean, lakes and rivers) and cryosphere. Over the past 544 million years (the Phanerozoic Eon), these components of the climate system have undergone significant changes but perhaps none more extreme than in the Proterozoic Era (2.5 G-544 Ma) With at least three periods with low-latitude glacial deposits (during the Palaeoproterozoic and Neoproterozoic), the cryosphere may have dominated the earth's surface, possibly the only such event in earth's history. Indeed, if the Earth had an obliquity similar to the present (23.45), then low-latitude glaciation could represent a nearly ice- and snow-covered globe. Effects would have been multiform: The influence of the hydrosphere would have been at a minimum and most living organisms would have been confined to small areas of open ocean if they existed at all, or possibly near hydrothermal vents. The atmosphere would have been very dry and nearly cloud-free.
606   $aClimate change
606   $aClimatic extremes
606   $aGlaciers
606   $aGlacial climates
606   $aPaleoclimatology
606   $aPaleoclimatology$xProterozoic
606   $aProterozoic$xGeologic Period
615  0$aClimate change.
615  0$aClimatic extremes.
615  0$aGlaciers.
615  0$aGlacial climates.
615  0$aPaleoclimatology.
615  0$aPaleoclimatology$xProterozoic.
615  0$aProterozoic$xGeologic Period.
676   $a551.6/09/012
700   $aJenkins$b Gregory S$0888165
701   $aJenkins$b Gregory S$0888165
801  0$bPQKB
906   $aBOOK
912   $a996202752603316
996   $aThe Extreme Proterozoic: Geology, Geochemistry, and Climate$91984003
997   $aUNISA