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GEOREF RECORD

Permian climatic cooling in the Canadian Arctic

Benoit Beauchamp
Permian climatic cooling in the Canadian Arctic (in Pangea; paleoclimate, tectonics, and sedimentation during accretion, zenith and breakup of a supercontinent, George D. Klein (editor))
Special Paper - Geological Society of America (1994) 288: 229-246

Abstract

The biotic succession of the Sverdrup Basin, Canadian Arctic, records a significant Permian climatic cooling trend. Highly diversified, tropicallike associations dominated by calcareous alga and foraminifer (Chloroforam) prevailed during the Asselian and Sakmarian, whereas poorly diversified, temperatelike associations, dominated by bryozoan, echinoderm, and brachiopod, characterized the Artinskian (Bryonoderm-extended) to Kazanian (Bryonoderm) interval. Polarlike, siliceous sponge-dominated biota (Hyalosponge) prevailed during the latest Permian. The climatic gradient suggested by this trend, and by other climatic indicators (ooid, oncoid, evaporite, reef, submarine cement, dropstone, red bed, caliche, coal), is far greater than that expected from the 10 to 15 degrees of northerly migration inferred for Pangea during the Permian. The cooling trend, the causes of which are unknown, is evidence for a dramatic climatic deterioration in northern Pangea at the end of the Paleozoic.


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 288
Title: Permian climatic cooling in the Canadian Arctic
Title: Pangea; paleoclimate, tectonics, and sedimentation during accretion, zenith and breakup of a supercontinent
Author(s): Beauchamp, Benoit
Author(s): Klein, George D.editor
Affiliation: Geological Survey of Canada, Institute of Sedimentary and Petroleum Geology, Calgary, AB, Canada
Affiliation: New Jersey Marine Sciences Consortium, Sandy Hook Field Station, Fort Hancock, NJ, United States
Pages: 229-246
Published: 1994
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
Meeting name: International workshop for Project PANGEA
Meeting location: Lawrence, KS, USA, United States
Meeting date: 199205May 1992
References: 60
Accession Number: 1994-030735
Categories: Stratigraphy
Document Type: Serial Conference document
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. cols., 4 plates, sketch maps
N60°00'00" - N84°00'00", W136°00'00" - W102°00'00"
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute.
Update Code: 199414
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