Regional-scale subsurface sand remobilization: geometry and architecture

Mario Vigorito, Andrew Hurst, Joe Cartwright, Anthony Scott

Research output: Contribution to journalArticle

73 Citations (Scopus)


An architectural hierarchy of elastic 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.

Original languageEnglish
Pages (from-to)609-612
Number of pages4
JournalJournal of the Geological Society
Issue number3
Publication statusPublished - May 2008


  • sandstone intrusions
  • North-Sea
  • California
  • migration
  • injection


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