Neoproterozoic timescales and stratigraphy
@inproceedings{Smith2009NeoproterozoicTA, title={Neoproterozoic timescales and stratigraphy}, author={Alan Smith}, year={2009} }
Abstract The Infracambrian is a term for mostly Neoproterozoic successions in North Africa and areas to the east. Its base lies within the middle Neoproterozoic period, or Cryogenian, includes the youngest Neoproterozoic period, or Ediacaran, and continues into the early Cambrian to the level at which trilobites first appear. The Cryogenian lacks any biostratigraphic zonation; and no global biostratigraphic schemes exist for the Ediacaran. The formal classification of the Neoproterozoic is…
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Global Neoproterozoic petroleum systems: the emerging potential in North Africa
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The Brock Inlier, Northwest Territories, comprises carbonate and siliciclastic sedimentary rocks of the early Neoproterozoic (~1000-720 Ma) Shaler Supergroup. Strata were deposited in a large…
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- Environmental Science, Geography
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Chapter 18 Tonian–Cryogenian rifting and Cambrian–Early Devonian platformal to foreland basin development outside the Caledonide orogen
- Geology, Environmental Sciencememoirs
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Abstract Different parts of a Tonian–Early Devonian sedimentary succession, covering Proterozoic crystalline basement, occur along the erosional front to the Caledonide orogen, as outliers and…
References
SHOWING 1-10 OF 135 REFERENCES
Low-latitude glaciation in the Neoproterozoic of Oman
- Geology
- 2005
Although Earth is widely believed to have undergone a series of extreme low-latitude snowball glaciations during the Neoproterozoic (ca. 1000–543 Ma), only one reliable paleomagnetic result, from…
Toward a Neoproterozoic composite carbon-isotope record
- Environmental Science, Geology
- 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…
New constraints on the ages of Neoproterozoic glaciations in south China
- Environmental Science, Geography
- 2004
The most complete Neoproterozoic successions in south China contain three diamictite intervals in the Changan, Tiesiao, and Nantuo Formations. The youngest and most widespread Nantuo glacial deposit…
The Marinoan glaciation (Neoproterozoic) in northeast Svalbard
- Environmental Science
- 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…
Neoproterozoic glaciation in the Earth System
- Environmental Science, GeographyJournal of the Geological Society
- 2007
The Neoproterozoic contains severe glacial intervals (750–580 Ma) including two extending to low palaeomagnetic latitudes. Paucity of radiometric dates indicates the need for chronostratigraphic…
Two or four Neoproterozoic glaciations
- Geology, Geography
- 1998
A thick Neoproterozoic carbonate and glaciogenic succession of the southern Congo craton has yielded δ 13 C and 87 Sr/ 86 Sr records through the later Cryogenian (ca. 750–600 Ma) and earlier part of…
Neoproterozoic glacial-rainout intervals: Observations and implications
- Environmental Science, Geography
- 2002
Stratigraphically discrete glacigenic dropstone intervals have been identified within six separate Neoproterozoic glaciomarine successions: the ca. 720 Ma Chuos Formation (southwestern Congo craton)…
The Ediacaran Period: A New Addition to the Geologic Time Scale
- Geology, Environmental Science
- 2006
The International Union of Geological Sciences has approved a new addition to the geologic time scale: the Ediacaran Period. The Ediacaran is the first Proterozoic period to be recognized on the…
Amalgamating eastern Gondwana: The evolution of the Circum-Indian Orogens
- Environmental Science, Geography
- 2005