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Lava-sediment interaction and drainage-system development in a large igneous province; Columbia River flood basalt province, Washington State, U.S.A

Alena Ebinghaus, Adrian J. Hartley, David W. Jolley, Malcolm Hole and John Millett
Lava-sediment interaction and drainage-system development in a large igneous province; Columbia River flood basalt province, Washington State, U.S.A
Journal of Sedimentary Research (November 2014) 84 (11): 1041-1063

Abstract

Large Igneous Provinces (LIPs) have been implicated in some of the largest environmental perturbations to have affected the Earth through geological time. Yet the impact of LIP development on drainage and ecosystem development in the immediate vicinity of these provinces are still poorly constrained to date. Based on a detailed, integrative facies scheme we characterize the interaction between volcanism and fluvial, lacustrine, and wetland environments in the Miocene Columbia River Flood Basalt Province (CRBP) LIP exposed in central Washington State, USA. The facies scheme proposed here comprises a detailed description and interpretation of siliciclastic, bioclastic (diatomite), volcaniclastic, and paleosol facies and subfacies intercalated with lavas of the Columbia River Basalt Group (CRBG). Facies and facies associations of individual interbeds are further correlated to reconstruct changes in sedimentary settings and topography of lava fields during deposition. Field observations and facies analysis help to explain the effects of flood-basalt volcanism on drainage-system development. We propose a generic model of lava-drainage interplay and distribution of sedimentary settings in flood-basalt provinces, which will contribute to our understanding of sedimentological, environmental, and volcanic processes in the CRBP. Hydrocarbon exploration in volcanic terrains requires detailed information on the distribution and development of sedimentary settings. This model will help to better predict the character and distribution of sedimentary bodies and potential hydrocarbon reservoirs in volcanic terrains.


ISSN: 1527-1404
EISSN: 1938-3681
Serial Title: Journal of Sedimentary Research
Serial Volume: 84
Serial Issue: 11
Title: Lava-sediment interaction and drainage-system development in a large igneous province; Columbia River flood basalt province, Washington State, U.S.A
Affiliation: University of Aberdeen, Department of Geology and Petroleum Geology, Aberdeen, United Kingdom
Pages: 1041-1063
Published: 201411
Text Language: English
Publisher: Society for Sedimentary Geology, Tulsa, OK, United States
References: 84
Accession Number: 2014-102414
Categories: Sedimentary petrologyEconomic geology, geology of energy sources
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 3 plates, sketch maps
N45°30'00" - N49°00'00", W124°45'00" - W116°55'00"
Secondary Affiliation: Volcanic Basin Petroleum Research AS, NOR, Norway
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by SEPM (Society for Sedimentary Geology), Tulsa, OK, United States
Update Code: 201451
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