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Late Jurassic-Early Cretaceous inversion of rift structures, and linkage of petroleum system elements across postrift unconformity, U.S. Chukchi Shelf, Arctic Alaska

David W. Houseknecht and Christopher D. Connors
Late Jurassic-Early Cretaceous inversion of rift structures, and linkage of petroleum system elements across postrift unconformity, U.S. Chukchi Shelf, Arctic Alaska (in Petroleum systems in 'rift' basins, Paul J. Post (editor), James Coleman (editor), Norman C. Rosen (editor), David E. Brown (editor), Tina Roberts-Ashby (editor), Peter Kahn (editor) and Mark Rowan (editor))
Papers presented at the Gulf Coast Section, Society of Economic Paleontologists and Mineralogists Foundation Annual Bob F. Perkins Research Conference (December 2015) 34: 724-743

Abstract

Basin evolution of the U.S. Chukchi shelf involved multiple phases, including Late Devonian-Permian rifting, Permian-Early Jurassic sagging, Late Jurassic-Neocomian inversion, and Cretaceous-Cenozoic foreland-basin development. The focus of ongoing exploration is a petroleum system that includes sag phase source rocks; inversion-phase reservoir rocks; structure spanning the rift, sag, and inversion phases; and hydrocarbon generation during the foreland-basin phase. Interpretation of 2-D seismic and sparse well data documents the presence, in the south-central part of the shelf, of a series of en-echelon, north-south trending monoclinal fold limbs that display up to 1+ km (3,300 ft) of structural relief. These folds, which are located above the tips of rift-phase normal faults, are interpreted as inversion structures formed by maximum compressive stress oriented obliquely to the strike of rift-phase normal faults. Erosional relief on a Jurassic unconformity, growth strata in the overlying Upper Jurassic to Neocomian strata, and east-dipping clinoforms in a high accommodation depocenter east of the inversion structures indicate profound structural influence on sedimentation. Oil-prone source rocks, reservoir-quality sandstone, migration pathways, and structural closure are linked intimately across the Jurassic unconformity, which reflects inversion. Thus, all these key petroleum systems elements were in place when Triassic source rocks entered the oil generation window during Cretaceous-Cenozoic stratigraphic burial.


ISSN: 1544-2462
Serial Title: Papers presented at the Gulf Coast Section, Society of Economic Paleontologists and Mineralogists Foundation Annual Bob F. Perkins Research Conference
Serial Volume: 34
Title: Late Jurassic-Early Cretaceous inversion of rift structures, and linkage of petroleum system elements across postrift unconformity, U.S. Chukchi Shelf, Arctic Alaska
Title: Petroleum systems in 'rift' basins
Author(s): Houseknecht, David W.Connors, Christopher D.
Author(s): Post, Paul J.editor
Author(s): Coleman, James, Jr.editor
Author(s): Rosen, Norman C.editor
Author(s): Brown, David E.editor
Author(s): Roberts-Ashby, Tinaeditor
Author(s): Kahn, Petereditor
Author(s): Rowan, Markeditor
Affiliation: U. S. Geological Survey, Reston, VA, United States
Affiliation: Bureau of Ocean Energy Management, New Orleans, LA, United States
Pages: 724-743
Published: 20151201
Text Language: English
Publisher: Society of Economic Paleontologists, Gulf Coast Section (GCSSEPM) Foundation, Houston, TX, United States
ISBN: 978-1-944966-00-3
Meeting name: 34th GCSSEPM Foundation Bob F. Perkins-Rosen research conference on Petroleum systems in 'rift' basins
Meeting location: Houston, TX, USA, United States
Meeting date: 20151213Dec. 13-16, 2015
References: 33
Accession Number: 2020-013089
Categories: Economic geology, geology of energy sourcesApplied geophysics
Document Type: Serial Conference document
Bibliographic Level: Analytic
Illustration Description: illus. incl. sects., strat. col., sketch map
N65°00'00" - N80°00'00", W180°00'00" - W160°00'00"
Secondary Affiliation: Washington and Lee University, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2020, American Geosciences Institute.
Update Code: 202009
Program Name: USGSOPNon-USGS publications with USGS authors
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