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dc.contributor.author
Schwarz, Ernesto
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dc.contributor.author
Arnott, R. William C.
dc.date.available
2024-06-07T10:53:19Z
dc.date.issued
2007
dc.identifier.citation
Sill-dominated clastic intrusions sourced from adjacent deep-water submarine channels: Geometry and emplacement models (Isaac Formation, Neoproterozoic Windermere supergroup, Southern Canadian Cordillera); AAPG Annual Convention and Exhibition; Long Beach; Estados Unidos; 2007; 1-1
dc.identifier.uri
http://hdl.handle.net/11336/237458
dc.description.abstract
Recently outcrop and seismic examples of postdepositionally mobilized sediment (injections) have become increasingly recognized, and commonly occur as bedding-discordant dikes. In strata of the Neoproterozoic Windermere Supergroup, however, injections are dominated by coarse-grain, bedding-concordant sills (<2.5 m thick) that typically intrude thin-bedded turbidites. Sills are most common at the bases of coarse-grained channel fills where they form sharply-bounded, fingerlike projections that taper and eventually pinch out over horizontal scales of several meters to 50 meters. Almost invariably the intrusion fill consists of poorly-sorted, very coarse sandstone with dispersed granules. Generally grain size varies little along the length of the sill, but near its terminus fines rapidly. Mudstone clasts are common immediately adjacent to the channel-fill margin, but decrease rapidly in abundance and size laterally. Intrusions are interpreted to be the result of short-lived, catastrophic fluidization of shallowly-buried channel-fill sediment. Initially pore-fluid pressures in the sand/gravel channel deposits were probably elevated by the influx of fluid expelled from adjacent, compacting, mud-rich, thin-bedded turbidites. Later, pore pressures became significantly elevated, in some cases by the instantaneous loading of overlying debris-flow deposits. Sand and granules most probably intruded adjacent strata as a network of coalescing elements that in many places completely surrounded and isolated “clasts” of thin-bedded strata (in-situ brecciation). Further away from their sediment source (i.e. channel fill) intrusions preferentially intruded along sand-rich layers in the thin-bedded turbidites, and then thinned rapidly and terminated. Although dikes are uncommon, these sill-dominated intrusion complexes may connect adjacent channel-fill deposits and enhance channel reservoir connectivity.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
American Association of Petroleum Geology
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Sill-Dominated Clastic Intrusions
dc.subject
Geometry and Emplacement Models
dc.subject
Deep-Water Submarine Channels
dc.subject
Isaac Fm
dc.subject
Neoproterozoic Windermere Supergroup
dc.subject.classification
Geología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
Sill-dominated clastic intrusions sourced from adjacent deep-water submarine channels: Geometry and emplacement models (Isaac Formation, Neoproterozoic Windermere supergroup, Southern Canadian Cordillera)
dc.type
info:eu-repo/semantics/publishedVersion
dc.type
info:eu-repo/semantics/conferenceObject
dc.type
info:ar-repo/semantics/documento de conferencia
dc.date.updated
2024-06-04T14:28:17Z
dc.journal.pagination
1-1
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Long Beach
dc.description.fil
Fil: Schwarz, Ernesto. University of Ottawa. Faculty of Science; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Centro de Investigaciones Geológicas. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. Centro de Investigaciones Geológicas; Argentina
dc.description.fil
Fil: Arnott, R. William C.. University of Ottawa. Faculty of Science; Canadá
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.searchanddiscovery.com/abstracts/html/2007/annual/abstracts/lbSchwarz.htm
dc.conicet.rol
Autor
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dc.conicet.rol
Autor
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dc.coverage
Internacional
dc.type.subtype
Reunión
dc.description.nombreEvento
AAPG Annual Convention and Exhibition
dc.date.evento
2007-04-01
dc.description.ciudadEvento
Long Beach
dc.description.paisEvento
Estados Unidos
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dc.type.publicacion
Book
dc.description.institucionOrganizadora
American Association of Petroleum Geologists
dc.source.libro
AAPG Annual Convention and Exhibition, Abstracts volume
dc.date.eventoHasta
2007-04-04
dc.type
Reunión
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