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Regional-scale subsurface sand remobilization; geometry and architecture

Mario Vigorito, Andrew Hurst, Joe A. Cartwright and Anthony Scott
Regional-scale subsurface sand remobilization; geometry and architecture
Journal of the Geological Society of London (May 2008) 165 (3): 609-612

Abstract

An architectural hierarchy of clastic sills is recognized in the Panoche Giant Injection Complex in which staggered, stepped with erosive top surfaces, and multi-layered geometries occur in that stratigraphic order upward. Genetic relationships between parent depositional sand bodies, the sand injections, a zone of hydraulic fracture and a palaeo sea floor are seen at a scale previously observed only by using seismic data. Sills and randomly oriented dykes intrude into a hydraulically fractured shale unit above and below which dykes predominate. Erosive surfaces (scallops) are identified on sills that, along with smaller erosional features, record low-viscosity turbulent flow during sand injection. Sand extrusions occur where dykes reach the palaeo sea floor.


ISSN: 0016-7649
EISSN: 2041-479X
Coden: JGSLAS
Serial Title: Journal of the Geological Society of London
Serial Volume: 165
Serial Issue: 3
Title: Regional-scale subsurface sand remobilization; geometry and architecture
Affiliation: University of Aberdeen, Department of Geology and Petroleum Geology, Aberdeen, United Kingdom
Pages: 609-612
Published: 200805
Text Language: English
Publisher: Geological Society of London, London, United Kingdom
References: 22
Accession Number: 2008-082534
Categories: StratigraphySedimentary petrology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. geol. sketch map
N36°37'30" - N36°43'00", W120°43'60" - W120°40'60"
Secondary Affiliation: Cardiff University, GBR, United Kingdom
Country of Publication: United Kingdom
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data from The Geological Society, London, London, United Kingdom
Update Code: 200824
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