Regional-scale subsurface sand remobilization: geometry and architecture

Vigorito, M., Hurst, A., Cartwright, Joseph Albert and Scott, A. 2008. Regional-scale subsurface sand remobilization: geometry and architecture. Journal of the Geological Society 165 (3) , pp. 609-612. 10.1144/0016-76492007-096

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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.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Earth and Environmental Sciences
Subjects:	G Geography. Anthropology. Recreation > GC Oceanography Q Science > QE Geology
Publisher:	Geological Society of London
ISSN:	0016-7649
Last Modified:	28 Jun 2019 02:14
URI:	https://orca.cardiff.ac.uk/id/eprint/12360

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