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dc.contributor.author
Isla, Manuel Fermín
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dc.contributor.author
Coronel, Marina Denise
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dc.contributor.author
Schwarz, Ernesto
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dc.contributor.author
Veiga, Gonzalo Diego
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dc.date.available
2020-06-23T15:41:00Z
dc.date.issued
2020-08
dc.identifier.citation
Isla, Manuel Fermín; Coronel, Marina Denise; Schwarz, Ernesto; Veiga, Gonzalo Diego; Depositional architecture of a wave-dominated clastic shoreline (Pilmatué Member, Argentina): Linking dynamics and stratigraphic record of bar-trough systems; Elsevier; Marine And Petroleum Geology; 118; 8-2020; 1-15
dc.identifier.issn
0264-8172
dc.identifier.uri
http://hdl.handle.net/11336/107929
dc.description.abstract
Bar-trough morphologies are a dominant feature of modern wave-dominated clastic shorelines. Despite thesebarred configurations being widely described from modern systems there is still some uncertainties associatedwith their interpretation in the ancient record. There is a lack of detailed outcrop-based studies describing thefacies distribution and architecture within bar trough systems which causes a disparity between observations ofmodern processes and the subsequent preserved rock record.This work presents a detailed characterization and interpretation of the sedimentary record of a bar-troughsetting. This was achieved through the analysis of nearshore (i.e. upper shoreface and foreshore) deposits withina parasequence in the Lower Cretaceous, Pilmatué Member of the Agrio Formation (Neuquén Basin, Argentina).A high-resolution facies and architectural analysis was developed, combining detailed sedimentary logs with themapping of bounding and internal surfaces within the nearshore deposits. The facies analysis suggests thattrough and planar cross-bedded facies are remnants of dunes in the upper shoreface due to a strong influence oflongshore currents, while planar laminated facies would be the result of swash processes in the foreshore.Additionally, the presence of a well-defined surf diastem, the persistent low-angle obliquity of palaeocurrentsand the preservation of concave-upward stratigraphic surfaces led to the interpretation of those deposits asrepresenting the production of a bar-trough configuration with longshore currents distributing large amounts ofsediment along the shore. This analysis allowed us to reconstruct the dominant processes for sediment transportand deposition within these barred nearshore settings and to identify different key architectural surfaces for theupper-shoreface and foreshore deposits. The architectural analysis of such surfaces led to define four differentorders of hierarchy, which respond to depositional and erosional processes operating at different scales. Thecomparison between different resulting architectures of wave-dominated barred shoreline offers the possibilityto improve in the palaeoenvironmental reconstructions for ancient or recent successions. The proposed model forbar-trough clastic shoreline successions relates an absence of bar-related deposits to major storms and shorelineerosional processes. This conceptual model offers a new interpretation for explaining the mid-scale evolution ofbar-trough settings and the relationship between the modern and ancient record.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier
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dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
BARRED CLASTIC SHORELINE
dc.subject
FACIES MODELS
dc.subject
PILMATUÉ MEMBER
dc.subject
NEUQUÉN BASIN
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
Depositional architecture of a wave-dominated clastic shoreline (Pilmatué Member, Argentina): Linking dynamics and stratigraphic record of bar-trough systems
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2020-06-23T13:11:46Z
dc.journal.volume
118
dc.journal.pagination
1-15
dc.journal.pais
Países Bajos
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dc.journal.ciudad
Amsterdam
dc.description.fil
Fil: Isla, Manuel Fermín. 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: Coronel, Marina Denise. 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: 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: 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
dc.journal.title
Marine And Petroleum Geology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.marpetgeo.2020.104417
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/abs/pii/S0264817220302002?via%3Dihub
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