Interaction of tidal and fluvial processes from delta front to coastal plain: Subsurface implications
- Autores
- Gugliotta, Marcello; Flint, Stephen; Hodgson, David M.; Veiga, Gonzalo Diego
- Año de publicación
- 2014
- Idioma
- inglés
- Tipo de recurso
- documento de conferencia
- Estado
- versión publicada
- Descripción
- Deltas show a range of different morphologies, architectures, facies and grain size distributions. Although the interplay of external factors may contribute to this variety, a significant role is played by the interaction of fluvial and marine processes. Constraining the relative importance of fluvial, tidal and wave effects in an ancient deltaic system, is crucial to improve prediction of 3D depositional architecture and reservoir connectivity. This study provides an example from the Lajas Formation, which consists of middle Jurassic deltaic deposits that accumulated in the back-arc phase of the Neuquén Basin, Argentina. Sedimentological logging, correlation panel construction, architectural element and facies analysis were combined with statistical analysis of rhythmicity in stratal thicknesses, to evaluate the degree of tidal influence during deposition. Lower parts of 5-12 m thickening/coarsening upward packages (medial/distal mouth bars) show ripple-scale bimodal palaeocurrents associated with marine/brackish trace fossils. Upper parts of these packages (proximal mouth bars) show unidirectional river-dominated paleocurrents and rhythmically distributed carbonaceous drapes to cross-beds, indicating modulation by tidal process. Fining-up sandstone packages 3-5 m thick lack trace and body fossils, bimodal paleocurrents and rhythmically distributed carbonaceous drapes, and are interpreted as river-dominated distributary channel fills. Minor (0.5-2 m) thickening/coarsening upward packages are interpreted as interdistributary, marine-influenced bays filled by river-flood derived crevasse subdeltas. Mud drapes, rhythmical bundling and rare bimodal palaeocurrents indicate tidal reworking during interflood periods. The Lajas example shows a clear dissipation of tidal effects in the mouth bars, with little or no evidence of tidal influence in the channels, but minor influence in interdistributary areas. Moreover, the position of tidal bidirectional and modulated facies appear to be shifted seaward compared to modern and ancient examples of tide-dominated deltas. The Lajas Fm. is interpreted as a tidally-influenced rather than a tidally-dominated delta, which has implications for (1) geometry of mouth bars, which might be less elongate and more interconnected than if tidally reworked; and (2) grain size distribution in distributary channels, which will contain fewer fluid muds and drapes, and can thus be considered as important additional reservoirs.
Fil: Gugliotta, Marcello. University of Manchester; Reino Unido
Fil: Flint, Stephen. University of Manchester; Reino Unido
Fil: Hodgson, David M.. University of Leeds; Reino Unido
Fil: Veiga, Gonzalo Diego. 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
AAPG 2014 Annual Convention and Exhibition
Houston
Estados Unidos
American Association of Petroleum Geologists
Society for Sedimentary Geology - Materia
-
SEDIMENTOLOGIA
SISTEMAS DELTAICOS
CUENCA NEUQUINA - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/233380
Ver los metadatos del registro completo
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spelling |
Interaction of tidal and fluvial processes from delta front to coastal plain: Subsurface implicationsGugliotta, MarcelloFlint, StephenHodgson, David M.Veiga, Gonzalo DiegoSEDIMENTOLOGIASISTEMAS DELTAICOSCUENCA NEUQUINAhttps://purl.org/becyt/ford/1.5https://purl.org/becyt/ford/1Deltas show a range of different morphologies, architectures, facies and grain size distributions. Although the interplay of external factors may contribute to this variety, a significant role is played by the interaction of fluvial and marine processes. Constraining the relative importance of fluvial, tidal and wave effects in an ancient deltaic system, is crucial to improve prediction of 3D depositional architecture and reservoir connectivity. This study provides an example from the Lajas Formation, which consists of middle Jurassic deltaic deposits that accumulated in the back-arc phase of the Neuquén Basin, Argentina. Sedimentological logging, correlation panel construction, architectural element and facies analysis were combined with statistical analysis of rhythmicity in stratal thicknesses, to evaluate the degree of tidal influence during deposition. Lower parts of 5-12 m thickening/coarsening upward packages (medial/distal mouth bars) show ripple-scale bimodal palaeocurrents associated with marine/brackish trace fossils. Upper parts of these packages (proximal mouth bars) show unidirectional river-dominated paleocurrents and rhythmically distributed carbonaceous drapes to cross-beds, indicating modulation by tidal process. Fining-up sandstone packages 3-5 m thick lack trace and body fossils, bimodal paleocurrents and rhythmically distributed carbonaceous drapes, and are interpreted as river-dominated distributary channel fills. Minor (0.5-2 m) thickening/coarsening upward packages are interpreted as interdistributary, marine-influenced bays filled by river-flood derived crevasse subdeltas. Mud drapes, rhythmical bundling and rare bimodal palaeocurrents indicate tidal reworking during interflood periods. The Lajas example shows a clear dissipation of tidal effects in the mouth bars, with little or no evidence of tidal influence in the channels, but minor influence in interdistributary areas. Moreover, the position of tidal bidirectional and modulated facies appear to be shifted seaward compared to modern and ancient examples of tide-dominated deltas. The Lajas Fm. is interpreted as a tidally-influenced rather than a tidally-dominated delta, which has implications for (1) geometry of mouth bars, which might be less elongate and more interconnected than if tidally reworked; and (2) grain size distribution in distributary channels, which will contain fewer fluid muds and drapes, and can thus be considered as important additional reservoirs.Fil: Gugliotta, Marcello. University of Manchester; Reino UnidoFil: Flint, Stephen. University of Manchester; Reino UnidoFil: Hodgson, David M.. University of Leeds; Reino UnidoFil: Veiga, Gonzalo Diego. 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; ArgentinaAAPG 2014 Annual Convention and ExhibitionHoustonEstados UnidosAmerican Association of Petroleum GeologistsSociety for Sedimentary GeologyAmerican Association of Petroleum Geologists2014info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjectExposiciónBookhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/233380Interaction of tidal and fluvial processes from delta front to coastal plain: Subsurface implications; AAPG 2014 Annual Convention and Exhibition; Houston; Estados Unidos; 2014; 1-1CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.searchanddiscovery.com/abstracts/html/2014/90189ace/Internacionalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T10:07:56Zoai:ri.conicet.gov.ar:11336/233380instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 10:07:56.574CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Interaction of tidal and fluvial processes from delta front to coastal plain: Subsurface implications |
title |
Interaction of tidal and fluvial processes from delta front to coastal plain: Subsurface implications |
spellingShingle |
Interaction of tidal and fluvial processes from delta front to coastal plain: Subsurface implications Gugliotta, Marcello SEDIMENTOLOGIA SISTEMAS DELTAICOS CUENCA NEUQUINA |
title_short |
Interaction of tidal and fluvial processes from delta front to coastal plain: Subsurface implications |
title_full |
Interaction of tidal and fluvial processes from delta front to coastal plain: Subsurface implications |
title_fullStr |
Interaction of tidal and fluvial processes from delta front to coastal plain: Subsurface implications |
title_full_unstemmed |
Interaction of tidal and fluvial processes from delta front to coastal plain: Subsurface implications |
title_sort |
Interaction of tidal and fluvial processes from delta front to coastal plain: Subsurface implications |
dc.creator.none.fl_str_mv |
Gugliotta, Marcello Flint, Stephen Hodgson, David M. Veiga, Gonzalo Diego |
author |
Gugliotta, Marcello |
author_facet |
Gugliotta, Marcello Flint, Stephen Hodgson, David M. Veiga, Gonzalo Diego |
author_role |
author |
author2 |
Flint, Stephen Hodgson, David M. Veiga, Gonzalo Diego |
author2_role |
author author author |
dc.subject.none.fl_str_mv |
SEDIMENTOLOGIA SISTEMAS DELTAICOS CUENCA NEUQUINA |
topic |
SEDIMENTOLOGIA SISTEMAS DELTAICOS CUENCA NEUQUINA |
purl_subject.fl_str_mv |
https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
dc.description.none.fl_txt_mv |
Deltas show a range of different morphologies, architectures, facies and grain size distributions. Although the interplay of external factors may contribute to this variety, a significant role is played by the interaction of fluvial and marine processes. Constraining the relative importance of fluvial, tidal and wave effects in an ancient deltaic system, is crucial to improve prediction of 3D depositional architecture and reservoir connectivity. This study provides an example from the Lajas Formation, which consists of middle Jurassic deltaic deposits that accumulated in the back-arc phase of the Neuquén Basin, Argentina. Sedimentological logging, correlation panel construction, architectural element and facies analysis were combined with statistical analysis of rhythmicity in stratal thicknesses, to evaluate the degree of tidal influence during deposition. Lower parts of 5-12 m thickening/coarsening upward packages (medial/distal mouth bars) show ripple-scale bimodal palaeocurrents associated with marine/brackish trace fossils. Upper parts of these packages (proximal mouth bars) show unidirectional river-dominated paleocurrents and rhythmically distributed carbonaceous drapes to cross-beds, indicating modulation by tidal process. Fining-up sandstone packages 3-5 m thick lack trace and body fossils, bimodal paleocurrents and rhythmically distributed carbonaceous drapes, and are interpreted as river-dominated distributary channel fills. Minor (0.5-2 m) thickening/coarsening upward packages are interpreted as interdistributary, marine-influenced bays filled by river-flood derived crevasse subdeltas. Mud drapes, rhythmical bundling and rare bimodal palaeocurrents indicate tidal reworking during interflood periods. The Lajas example shows a clear dissipation of tidal effects in the mouth bars, with little or no evidence of tidal influence in the channels, but minor influence in interdistributary areas. Moreover, the position of tidal bidirectional and modulated facies appear to be shifted seaward compared to modern and ancient examples of tide-dominated deltas. The Lajas Fm. is interpreted as a tidally-influenced rather than a tidally-dominated delta, which has implications for (1) geometry of mouth bars, which might be less elongate and more interconnected than if tidally reworked; and (2) grain size distribution in distributary channels, which will contain fewer fluid muds and drapes, and can thus be considered as important additional reservoirs. Fil: Gugliotta, Marcello. University of Manchester; Reino Unido Fil: Flint, Stephen. University of Manchester; Reino Unido Fil: Hodgson, David M.. University of Leeds; Reino Unido Fil: Veiga, Gonzalo Diego. 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 AAPG 2014 Annual Convention and Exhibition Houston Estados Unidos American Association of Petroleum Geologists Society for Sedimentary Geology |
description |
Deltas show a range of different morphologies, architectures, facies and grain size distributions. Although the interplay of external factors may contribute to this variety, a significant role is played by the interaction of fluvial and marine processes. Constraining the relative importance of fluvial, tidal and wave effects in an ancient deltaic system, is crucial to improve prediction of 3D depositional architecture and reservoir connectivity. This study provides an example from the Lajas Formation, which consists of middle Jurassic deltaic deposits that accumulated in the back-arc phase of the Neuquén Basin, Argentina. Sedimentological logging, correlation panel construction, architectural element and facies analysis were combined with statistical analysis of rhythmicity in stratal thicknesses, to evaluate the degree of tidal influence during deposition. Lower parts of 5-12 m thickening/coarsening upward packages (medial/distal mouth bars) show ripple-scale bimodal palaeocurrents associated with marine/brackish trace fossils. Upper parts of these packages (proximal mouth bars) show unidirectional river-dominated paleocurrents and rhythmically distributed carbonaceous drapes to cross-beds, indicating modulation by tidal process. Fining-up sandstone packages 3-5 m thick lack trace and body fossils, bimodal paleocurrents and rhythmically distributed carbonaceous drapes, and are interpreted as river-dominated distributary channel fills. Minor (0.5-2 m) thickening/coarsening upward packages are interpreted as interdistributary, marine-influenced bays filled by river-flood derived crevasse subdeltas. Mud drapes, rhythmical bundling and rare bimodal palaeocurrents indicate tidal reworking during interflood periods. The Lajas example shows a clear dissipation of tidal effects in the mouth bars, with little or no evidence of tidal influence in the channels, but minor influence in interdistributary areas. Moreover, the position of tidal bidirectional and modulated facies appear to be shifted seaward compared to modern and ancient examples of tide-dominated deltas. The Lajas Fm. is interpreted as a tidally-influenced rather than a tidally-dominated delta, which has implications for (1) geometry of mouth bars, which might be less elongate and more interconnected than if tidally reworked; and (2) grain size distribution in distributary channels, which will contain fewer fluid muds and drapes, and can thus be considered as important additional reservoirs. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/publishedVersion info:eu-repo/semantics/conferenceObject Exposición Book http://purl.org/coar/resource_type/c_5794 info:ar-repo/semantics/documentoDeConferencia |
status_str |
publishedVersion |
format |
conferenceObject |
dc.identifier.none.fl_str_mv |
http://hdl.handle.net/11336/233380 Interaction of tidal and fluvial processes from delta front to coastal plain: Subsurface implications; AAPG 2014 Annual Convention and Exhibition; Houston; Estados Unidos; 2014; 1-1 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/233380 |
identifier_str_mv |
Interaction of tidal and fluvial processes from delta front to coastal plain: Subsurface implications; AAPG 2014 Annual Convention and Exhibition; Houston; Estados Unidos; 2014; 1-1 CONICET Digital CONICET |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/url/https://www.searchanddiscovery.com/abstracts/html/2014/90189ace/ |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/ |
dc.format.none.fl_str_mv |
application/pdf application/pdf application/pdf |
dc.coverage.none.fl_str_mv |
Internacional |
dc.publisher.none.fl_str_mv |
American Association of Petroleum Geologists |
publisher.none.fl_str_mv |
American Association of Petroleum Geologists |
dc.source.none.fl_str_mv |
reponame:CONICET Digital (CONICET) instname:Consejo Nacional de Investigaciones Científicas y Técnicas |
reponame_str |
CONICET Digital (CONICET) |
collection |
CONICET Digital (CONICET) |
instname_str |
Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.name.fl_str_mv |
CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
repository.mail.fl_str_mv |
dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar |
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1842270024334573568 |
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13.13397 |