Is high obliquity a plausible cause for Neoproterozoic glaciations?

Details Is high obliquity a plausible cause for Neoproterozoic glaciations? Is high obliquity a plausible cause for Neoproterozoic glaciations?

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29w..42d&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 23, pp. 42-1, CiteID 2127, DOI 10.1029/2002GL015902

Mathematics

Logic

2

Global Change: Climate Dynamics (3309), Information Related To Geologic Time: Precambrian, Planetary Sciences: Glaciation

Scientific paper

The main features of the low-latitude Neoproterozoic glaciations remain the subject of controversial debates concerning possible triggers. Here we use an AGCM coupled with a slab ocean to test one of the earliest and simplest explanation for tropical glaciations: a higher obliquity of the Earth's rotation axis. We show that high obliquity may result in an extensive glaciation during the Sturtian episode (750 Ma), due to the location of continental masses in the tropical areas, but cannot produce a large glaciation in the case of mid to high latitude paleogeographies such as those thought to typify the Varangian-Vendian episodes (620-580 Ma).

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