Late Ordovician carbonate mounds from North Greenland: a peri-Laurentian dimension to the Boda Event?

Late Katian (Late Ordovician) carbonate mudmounds in the Turesø Formation, Peary Land, North Greenland, succeed normal marine faunas dominated by brachiopods, bryozoans, cephalopod and gastropod molluscs, aulaceratid stromatoporoids, corals and receptaculitid algae, in the Børglum River Formation, a...

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Bibliographic Details
Published in:GFF 2014-01, Vol.136 (1), p.95-99
Main Authors: Harper, David Alexander Taylor, Jin, Jisuo, Rasmussen, Christian Mac Ørum
Format: Article
Language:English
Subjects:
Brachiopoda
carbonate mounds
Earth and Related Environmental Sciences
Gastropoda
Geologi
Geology
Geovetenskap och miljövetenskap
Greenland
Katian
Late Ordovician
Marine
Natural Sciences
Naturvetenskap
Peary Land
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Summary:Late Katian (Late Ordovician) carbonate mudmounds in the Turesø Formation, Peary Land, North Greenland, succeed normal marine faunas dominated by brachiopods, bryozoans, cephalopod and gastropod molluscs, aulaceratid stromatoporoids, corals and receptaculitid algae, in the Børglum River Formation, and are themselves succeeded by organic-rich, largely barren limestones. This peri-Laurentian succession suggests deteriorating environmental conditions from a normal marine to a more restricted basin during the Late Katian and Hirnantian, against a background of gradual marine regression following the peak of the Boda Warming Event. The generally low-energy depositional setting probably lay within the Inter-Tropical Convergence Zone on the equator.
ISSN:1103-5897
2000-0863
2000-0863
DOI:10.1080/11035897.2013.865669