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Calibrating the Cryogenian
(American Association for the Advancement of Science (AAAS), 2010)
The Neoproterozoic was an era of great environmental and biological change, but a paucity of direct and precise age constraints on strata from this time has prevented the complete integration of these records. We present ...
Stratigraphy of the Port Nolloth Group of Namibia and South Africa and implications for the age of Neoproterozoic iron formations
(American Journal of Science (AJS), 2010)
Uncertainties in the number and age of glacial deposits within the Port Nolloth Group have hindered both structural and stratigraphic studies in the Neoproterozoic Gariep Belt of Namibia and South Africa. These uncertainties ...
Dynamics of a Snowball Earth Ocean
(Nature Publishing Group, 2013)
Geological evidence suggests that marine ice extended to the Equator at least twice during the Neoproterozoic era (about 750 to 635 million years ago), inspiring the Snowball Earth hypothesis that the Earth was globally ...
Early Neoproterozoic scale microfossils in the Lower Tindir Group of Alaska and the Yukon Territory
(Geological Society of America, 2010)
The Tindir Group is a <4-km-thick Neoproterozoic succession exposed in the Tatonduk inlier of east-central Alaska and the western Yukon Territory. The Tindir Group is informally divided into the Lower Tindir Group, which ...