Toward a Neoproterozoic composite carbon-isotope record
- G. Halverson, P. Hoffman, D. Schrag, A. Maloof, A. Rice
- Environmental Science, Geology
- 1 September 2005
Glacial deposits of Sturtian and Marinoan age occur in the well-studied Neoproterozoic successions of northern Namibia, South Australia, and northwestern Canada. In all three regions, the Marinoan…
Evolution of the 87Sr/86Sr composition of Neoproterozoic seawater
- G. Halverson, F. Dudás, A. Maloof, S. Bowring
- Environmental Science, Geography
- 6 December 2007
Neoproterozoic glaciations in a revised global palaeogeography from the breakup of Rodinia to the assembly of Gondwanaland
- Zheng‐Xiang Li, D. Evans, G. Halverson
- Environmental Science, Geography
- 15 August 2013
Statistical analysis of iron geochemical data suggests limited late Proterozoic oxygenation
- E. Sperling, Charles J Wolock, D. Johnston
- Environmental Science, GeographyNature
- 23 July 2015
This re-analysis of trace-metal data is consistent with oxygenation continuing well into the Palaeozoic era, and suggests that subsurface water masses in mid-Proterozoic oceans were predominantly anoxic and ferruginous, but with a tendency towards euxinia (sulfide-bearing) that is not observed in the Neoproterozoics era.
On the initiation of a snowball Earth
- D. Schrag, R. Berner, P. Hoffman, G. Halverson
- Environmental Science
- 1 June 2002
The Snowball Earth hypothesis explains the development of glaciation at low latitudes in the Neoproterozoic, as well as the associated iron formations and cap carbonates, in terms of a runaway…
Ocean redox structure across the Late Neoproterozoic Oxygenation Event: A nitrogen isotope perspective
- M. Ader, P. Sansjofre, A. Nogueira
- Geography, Environmental Science
- 15 June 2014
The stratigraphic relationship between the Shuram carbon isotope excursion, the oxygenation of Neoproterozoic oceans, and the first appearance of the Ediacara biota and bilaterian trace fossils in…
- F. Macdonald, J. Strauss, J. Higgins
- Environmental Science, Geography
- 20 December 2013
The Marinoan glaciation (Neoproterozoic) in northeast Svalbard
- G. Halverson, A. Maloof, P. Hoffman
- Environmental Science
- 1 September 2004
Two separate and distinct diamictite‐rich units occur in the mixed carbonate‐siliciclastic Polarisbreen Group, which comprises the top kilometer of >7 km of Neoproterozoic strata in the northeast of…
A shale-hosted Cr isotope record of low atmospheric oxygen during the Proterozoic
- D. Cole, C. Reinhard, N. Planavsky
- Environmental Science, Biology
- 1 July 2016
Evidence for a delayed rise of atmospheric oxygen strongly suggests that environmental factors have played a fundamental role in controlling the emergence and expansion of complex life on Earth.
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