Neoproterozoic glaciation: Reconciling low paleolatitudes and the geologic record
@article{Williams2013NeoproterozoicGR, title={Neoproterozoic glaciation: Reconciling low paleolatitudes and the geologic record}, author={George E. Williams and Phillip W. Schmidt}, journal={Geophysical monograph}, year={2013}, volume={146}, pages={145-159} }
Paleomagnetic data for Neoproterozoic glacial deposits in South Australia and elsewhere verify glaciomarine deposition near the paleoequator. Tidal rhythmites from such deposits in South Australia display symmetrical ripples indicating decades of continuous wave activity, and also record the annual oscillation of sea level. In low and moderate latitudes the annual oscillation of sea level results mostly from seasonal changes in heat content of the sea, indicating extensive and long-lived open…
11 Citations
Strongly seasonal Proterozoic glacial climate in low palaeolatitudes: Radically different climate system on the pre-Ediacaran Earth
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Chapter 70 The Elatina glaciation (late Cryogenian), South Australia
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Abstract Deposits of the late Cryogenian Elatina glaciation constitute the Yerelina Subgroup in the Adelaide Geosyncline region, South Australia. They have a maximum thickness of c. 1500 m, cover 200…
Neoproterozoic glaciations in a revised global palaeogeography from the breakup of Rodinia to the assembly of Gondwanaland
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Chapter 67 Neoproterozoic glacial deposits of central Australia
- Environmental Science, Geography
- 2011
Abstract There are two distinct stratigraphic levels of Neoproterozoic glacigenic deposits in central Australia, both Cryogenian in age, spread over an area greater than 2.5×106 km2. They were…
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- Geology
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The Protopangaea-Palaeopangaea model for the Precambrian continental crust predicts quasi-integrity reflecting a dominant Lid Tectonics defined by a palaeomagnetic record showing prolonged…
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Chapter 69 The glacial succession of Sturtian age in South Australia: the Yudnamutana Subgroup
- Geography, Environmental Science
- 2011
Abstract The record of two Neoproterozoic glaciations in South Australia has been known for about a century. The earlier glaciation, of Sturtian age, is represented by the Yudnamutana Subgroup and is…
Paleomagnetic Biases Inferred From Numerical Dynamos and the Search for Geodynamo Evolution
- GeologyFront. Earth Sci.
- 2018
The paleomagnetic record is central to our understanding of the history of the Earth. The orientation and intensity of magnetic minerals preserved in ancient rocks indicate the geodynamo has been…
Geological setting of exceptional geological features of the Flinders Ranges
- Geology
- 2020
The Flinders Ranges in South Australia mainly comprise folded Neoproterozoic to Cambrian sedimentary rocks of the Adelaide Geosyncline, with local inliers of its Paleo–Mesoproterozoic igneous and m...
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