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dc.contributor.author
Khan, Zishann
dc.contributor.author
Arnott, R. W. C
dc.contributor.author
Schwarz, Ernesto
dc.contributor.author
Altosaar, Andrés
dc.date.available
2024-02-05T11:56:24Z
dc.date.issued
2008
dc.identifier.citation
A detailed analysis of crevasse and overbank splay units in the Isaac formation (Windermere supergroup), of the southern canadian cordillera; 2008 Joint Meeting of The Geological Society of America; Houston; Estados Unidos; 2008; 167-167
dc.identifier.issn
0016-7592
dc.identifier.uri
http://hdl.handle.net/11336/225681
dc.description.abstract
Crevasse and overbank splay deposits have been studied in detail within the Isaac Formation. Crevasse splay units (CSU) range from 10 – 20 m thick and extend the length of the study area (> 4 km). Strata within CSU comprise medium to coarse sandstone Ta-c turbidites that range from 0.2 – 1 m thick and are interstratified with thinly-bedded tc-e turbidites. In addition, distinctively matrix-rich sandstone form up to 7 m thick packages intercalated with the turbidites. CSU are interpreted to have been deposited outboard of a crevasse channel that most likely breached the outer-bend channel margin. Episodically a number of high-energy expanding flows went through a hydraulic jump and deposited the matrix-rich sandstone. At other times, or at least locally, flows remained subcritical and deposited the more common turbidites. OSU are common in the outer-bend distal levee setting of a significant channel-levee complex and encased by thinly-bedded turbidites. OSU consist of amalgamated normally graded to planar and cross-stratified medium-bedded, medium sandstone turbidites. OSU are 2 – 4 m thick and extend up to 1 km laterally, however, individual beds within units are laterally discontinuous. Lateral discontinuity is likely the result of rapid flow thinning, filling of topography on the distal levee, and to a lesser extent erosion. As a result, OSU comprise a complex arrangement of sandstone turbidites that commonly offlap and onlap one another locally creating high N:G within the predominantly muddy distal levee. OSU were deposited by turbidity currents that overtopped the channel margin without breaching the levee. These overspilling flows bypassed the proximal levee area because of the steep slope on the backside of the levee, and deposited much of their sediment on the reduced slope over the more distal levee.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Geological Society of America
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Crevasse and Overbank Splay Units
dc.subject
Isaac Formation
dc.subject.classification
Geología
dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
A detailed analysis of crevasse and overbank splay units in the Isaac formation (Windermere supergroup), of the 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
2023-10-19T14:35:51Z
dc.journal.volume
40
dc.journal.number
6
dc.journal.pagination
167-167
dc.journal.pais
Estados Unidos
dc.journal.ciudad
Tulsa
dc.description.fil
Fil: Khan, Zishann. University of Ottawa. Faculty of Science; Canadá
dc.description.fil
Fil: Arnott, R. W. C. University of Ottawa. Faculty of Science; Canadá
dc.description.fil
Fil: Schwarz, Ernesto. 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: Altosaar, Andrés. Petro-Canada Head Office; Canadá
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://gsa.confex.com/gsa/2008AM/webprogram/Paper151752.html
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://gsa.confex.com/gsa/2008AM/webprogram/Session22366.html
dc.conicet.rol
Autor
dc.conicet.rol
Autor
dc.conicet.rol
Autor
dc.coverage
Internacional
dc.type.subtype
Reunión
dc.description.nombreEvento
2008 Joint Meeting of The Geological Society of America
dc.date.evento
2008-10-05
dc.description.ciudadEvento
Houston
dc.description.paisEvento
Estados Unidos
dc.type.publicacion
Journal
dc.description.institucionOrganizadora
Geological Society of America
dc.source.libro
Geological Society of America Abstracts with Programs
dc.source.revista
Geological Society of America Abstracts with Programs
dc.date.eventoHasta
2008-10-09
dc.type
Reunión
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