Eustatic sea-level record for the Cenomanian (Late Creatceous) - Extension to the Western Interior Basin, USA.

Gale, A. S., Voigt, Silke, Sageman, B. B. and Kennedy, W. J. (2008) Eustatic sea-level record for the Cenomanian (Late Creatceous) - Extension to the Western Interior Basin, USA. Geology, 36 (11). pp. 859-862. DOI 10.1130/G24838A.1.

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Abstract

A combination of biostratigraphic markers (ammonites, inoceramid bivalves) and carbon isotope excursions is employed to establish a high-resolution correlation between the middle to late Cenomanian successions of the Western Interior Basin (USA) and the Anglo-Paris Basin (southern UK). Sequences identified from sedimentologic criteria in the Pueblo succession and elsewhere in the Western Interior Basin are shown to coincide precisely with globally recognized sea-level events and were therefore under eustatic control. This evidence refutes arguments that Cenomanian sequences in the Western Interior Basin were formed by local tectonic events. The interaction of longer-term tectonic movements and more rapid eustatic change may have simply enhanced the amount of erosion associated with sequence boundaries. A crossplot of radiometric ages derived from North American bentonites against an orbitally tuned time scale developed in the Anglo-Paris Basin provides support for the argument that the sequences were controlled by the 405-k.y.-long eccentricity cycle.

Document Type: Article
Keywords: Western Interior Basin (USA), Anglo-Paris Basin (southern UK), eustatic sea-level record, Cenomanian
Research affiliation: OceanRep > GEOMAR > FB1 Ocean Circulation and Climate Dynamics > FB1-P-OZ Paleo-Oceanography
Refereed: Yes
Open Access Journal?: No
DOI etc.: 10.1130/G24838A.1
ISSN: 0091-7613
Date Deposited: 15 Dec 2008 11:30
Last Modified: 24 May 2017 09:23
URI: http://oceanrep.geomar.de/id/eprint/748

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