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dc.contributor.author
Liu, Qun
dc.contributor.author
Kneller, Ben
dc.contributor.author
Fallgatter, Claus
dc.contributor.author
Valdez Buso, Victoria
dc.contributor.author
Milana, Juan Pablo
dc.date.available
2019-11-19T21:00:06Z
dc.date.issued
2018-12
dc.identifier.citation
Liu, Qun; Kneller, Ben; Fallgatter, Claus; Valdez Buso, Victoria; Milana, Juan Pablo; Tabularity of individual turbidite beds controlled by flow efficiency and degree of confinement; Wiley Blackwell Publishing, Inc; Sedimentology; 65; 7; 12-2018; 2368-2387
dc.identifier.issn
0037-0746
dc.identifier.uri
http://hdl.handle.net/11336/89226
dc.description.abstract
Submarine lobes have various geometries and stacking patterns, whose differences are likely to be the result of variations in flow efficiency and degree of confinement. This study examines four contrasting units with differing flow efficiency and confinement, to evaluate their effects on bed geometries and stacking patterns. Three of these units occur in the Late Palaeozoic Paganzo Basin, north-west Argentina: the Las Lajas system is developed in a 0·8 km wide palaeofjord; the Cerro Bola system (of which two different units were studied) was deposited in a larger sub-basin, at least 20 km wide. The Paine C system of the late Cretaceous Magallanes Basin in Chile is confined by an incision surface 3 km wide. Seventy-eight individual beds in the four units have been chosen to calculate flow efficiency and degree of confinement. Individual flow efficiency has been estimated semi-quantitatively using the outcrop cross-sectional area of the bed (as a proxy for flow volume) and percentage of mud in the beds (as a relative estimate for that in the flows). The degree of confinement experienced by the flows was assessed semi-quantitatively by dividing the flow efficiency by the maximum preserved basin dimension. It is found that: (i) degree of confinement (efficiency divided by maximum preserved basin dimension) influences individual bed geometry, highly confined flows having a higher tabularity (smaller thinning rate); (ii) in highly confined settings, individual beds stack vertically, whereas in unconfined systems, they stack compensationally; (iii) highly confined or high efficiency flows have higher tabularity (smaller thinning rate), which implies that truly sheet-like systems are only developed in highly confined and high efficiency systems. The generic model of architecture of submarine lobes and turbidite sheet systems, as a function of flow efficiency and degree of confinement, could be applied widely to sheet-like systems both at outcrop and in the subsurface.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
DEGREE OF CONFINEMENT
dc.subject
FLOW EFFICIENCY
dc.subject
STACKING PATTERNS
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SUBMARINE LOBES
dc.subject
TURBIDITE SHEET SYSTEM
dc.subject.classification
Geociencias multidisciplinaria
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Tabularity of individual turbidite beds controlled by flow efficiency and degree of confinement
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2019-10-10T15:00:22Z
dc.journal.volume
65
dc.journal.number
7
dc.journal.pagination
2368-2387
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Liu, Qun. University of Aberdeen; Reino Unido
dc.description.fil
Fil: Kneller, Ben. University of Aberdeen; Reino Unido
dc.description.fil
Fil: Fallgatter, Claus. University of Aberdeen; Reino Unido
dc.description.fil
Fil: Valdez Buso, Victoria. University of Aberdeen; Reino Unido
dc.description.fil
Fil: Milana, Juan Pablo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Centro de Investigaciones de la Geosfera y Biosfera. Universidad Nacional de San Juan. Facultad de Ciencias Exactas Físicas y Naturales. Centro de Investigaciones de la Geosfera y Biosfera; Argentina
dc.journal.title
Sedimentology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/sed.12470
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/abs/10.1111/sed.12470
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