Facies and depositional architecture according to a jet efflux model of a late Paleozoic tidewater grounding-line system from the Itararé Group (Paraná Basin), southern Brazil
During the Late Paleozoic, the Gondwana supercontinent was affected by multiple glacial and deglacial episodes known as "The Late Paleozoic Ice Age" (LPIA). In Brazil, the evidence of this episode is recorded mainly by widespread glacial deposits preserved in the Paraná Basin that contain...
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ftconicet:oai:ri.conicet.gov.ar:11336/61137 2023-10-09T21:56:16+02:00 Facies and depositional architecture according to a jet efflux model of a late Paleozoic tidewater grounding-line system from the Itararé Group (Paraná Basin), southern Brazil Aquino, Carolina Danielski Buso, Victoria Valdez Faccini, Ubiratan Ferrucio Milana, Juan Pablo Paim, Paulo Sergio Gomes application/pdf http://hdl.handle.net/11336/61137 eng eng Pergamon-Elsevier Science Ltd info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2016.02.008 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981116300190 http://hdl.handle.net/11336/61137 Aquino, Carolina Danielski; Buso, Victoria Valdez; Faccini, Ubiratan Ferrucio; Milana, Juan Pablo; Paim, Paulo Sergio Gomes; Facies and depositional architecture according to a jet efflux model of a late Paleozoic tidewater grounding-line system from the Itararé Group (Paraná Basin), southern Brazil; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 67; 4-2016; 180-200 0895-9811 CONICET Digital CONICET info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ GROUNDING-LINE SYSTEMS HYDRAULIC JUMP HYPERCONCENTRATED FLOWS PLANE-WALL JET TIDEWATER GLACIER https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion ftconicet https://doi.org/10.1016/j.jsames.2016.02.008 2023-09-24T19:45:18Z During the Late Paleozoic, the Gondwana supercontinent was affected by multiple glacial and deglacial episodes known as "The Late Paleozoic Ice Age" (LPIA). In Brazil, the evidence of this episode is recorded mainly by widespread glacial deposits preserved in the Paraná Basin that contain the most extensive record of glaciation (Itararé Group) in Gondwana. The Pennsylvanian to early Permian glaciogenic deposits of the Itararé Group (Paraná Basin) are widely known and cover an extensive area in southern Brazil. In the Doutor Pedrinho area (Santa Catarina state, southern Brazil), three glacial cycles of glacier advance and retreat were described. The focus of this article is to detail the base of the second glacial episodes or Sequence II. The entire sequence records a deglacial system tract that is represented by a proximal glacial grounding-line system covered by marine mudstones and shales associated with a rapid flooding of the proglacial area. This study deals with the ice proximal grounding-line systems herein interpreted according to lab model named plane-wall jet with jump. Detailed facies analysis allowed the identification of several facies ranging from boulder-rich conglomerates to fine-grained sandstones. No fine-grained deposits such as siltstone or shale were recorded. According to this model, the deposits are a product of a supercritical plane-wall outflow jet that changes to a subcritical jet downflow from a hydraulic jump. The hydraulic jump forms an important energy boundary that is indicated by an abrupt change in grain size and cut-and-fill structures that occur at the middle-fan. The sedimentary facies and facies associations show a downflow trend that can be subdivided into three distinct stages of flow development: (1) a zone of flow establishment (ZFE), (2) a zone of transition (ZFT), and (3) an established zone (ZEF). The proximal discharge is characterized by hyperconcentrated-to-concentrated flow due to the high energy and sediment-laden nature of the flows. At the transitional zone, a ... Article in Journal/Newspaper Tidewater CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) Journal of South American Earth Sciences 67 180 200 |
institution |
Open Polar |
collection |
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas) |
op_collection_id |
ftconicet |
language |
English |
topic |
GROUNDING-LINE SYSTEMS HYDRAULIC JUMP HYPERCONCENTRATED FLOWS PLANE-WALL JET TIDEWATER GLACIER https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
spellingShingle |
GROUNDING-LINE SYSTEMS HYDRAULIC JUMP HYPERCONCENTRATED FLOWS PLANE-WALL JET TIDEWATER GLACIER https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 Aquino, Carolina Danielski Buso, Victoria Valdez Faccini, Ubiratan Ferrucio Milana, Juan Pablo Paim, Paulo Sergio Gomes Facies and depositional architecture according to a jet efflux model of a late Paleozoic tidewater grounding-line system from the Itararé Group (Paraná Basin), southern Brazil |
topic_facet |
GROUNDING-LINE SYSTEMS HYDRAULIC JUMP HYPERCONCENTRATED FLOWS PLANE-WALL JET TIDEWATER GLACIER https://purl.org/becyt/ford/1.5 https://purl.org/becyt/ford/1 |
description |
During the Late Paleozoic, the Gondwana supercontinent was affected by multiple glacial and deglacial episodes known as "The Late Paleozoic Ice Age" (LPIA). In Brazil, the evidence of this episode is recorded mainly by widespread glacial deposits preserved in the Paraná Basin that contain the most extensive record of glaciation (Itararé Group) in Gondwana. The Pennsylvanian to early Permian glaciogenic deposits of the Itararé Group (Paraná Basin) are widely known and cover an extensive area in southern Brazil. In the Doutor Pedrinho area (Santa Catarina state, southern Brazil), three glacial cycles of glacier advance and retreat were described. The focus of this article is to detail the base of the second glacial episodes or Sequence II. The entire sequence records a deglacial system tract that is represented by a proximal glacial grounding-line system covered by marine mudstones and shales associated with a rapid flooding of the proglacial area. This study deals with the ice proximal grounding-line systems herein interpreted according to lab model named plane-wall jet with jump. Detailed facies analysis allowed the identification of several facies ranging from boulder-rich conglomerates to fine-grained sandstones. No fine-grained deposits such as siltstone or shale were recorded. According to this model, the deposits are a product of a supercritical plane-wall outflow jet that changes to a subcritical jet downflow from a hydraulic jump. The hydraulic jump forms an important energy boundary that is indicated by an abrupt change in grain size and cut-and-fill structures that occur at the middle-fan. The sedimentary facies and facies associations show a downflow trend that can be subdivided into three distinct stages of flow development: (1) a zone of flow establishment (ZFE), (2) a zone of transition (ZFT), and (3) an established zone (ZEF). The proximal discharge is characterized by hyperconcentrated-to-concentrated flow due to the high energy and sediment-laden nature of the flows. At the transitional zone, a ... |
format |
Article in Journal/Newspaper |
author |
Aquino, Carolina Danielski Buso, Victoria Valdez Faccini, Ubiratan Ferrucio Milana, Juan Pablo Paim, Paulo Sergio Gomes |
author_facet |
Aquino, Carolina Danielski Buso, Victoria Valdez Faccini, Ubiratan Ferrucio Milana, Juan Pablo Paim, Paulo Sergio Gomes |
author_sort |
Aquino, Carolina Danielski |
title |
Facies and depositional architecture according to a jet efflux model of a late Paleozoic tidewater grounding-line system from the Itararé Group (Paraná Basin), southern Brazil |
title_short |
Facies and depositional architecture according to a jet efflux model of a late Paleozoic tidewater grounding-line system from the Itararé Group (Paraná Basin), southern Brazil |
title_full |
Facies and depositional architecture according to a jet efflux model of a late Paleozoic tidewater grounding-line system from the Itararé Group (Paraná Basin), southern Brazil |
title_fullStr |
Facies and depositional architecture according to a jet efflux model of a late Paleozoic tidewater grounding-line system from the Itararé Group (Paraná Basin), southern Brazil |
title_full_unstemmed |
Facies and depositional architecture according to a jet efflux model of a late Paleozoic tidewater grounding-line system from the Itararé Group (Paraná Basin), southern Brazil |
title_sort |
facies and depositional architecture according to a jet efflux model of a late paleozoic tidewater grounding-line system from the itararé group (paraná basin), southern brazil |
publisher |
Pergamon-Elsevier Science Ltd |
url |
http://hdl.handle.net/11336/61137 |
genre |
Tidewater |
genre_facet |
Tidewater |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.jsames.2016.02.008 info:eu-repo/semantics/altIdentifier/url/https://www.sciencedirect.com/science/article/pii/S0895981116300190 http://hdl.handle.net/11336/61137 Aquino, Carolina Danielski; Buso, Victoria Valdez; Faccini, Ubiratan Ferrucio; Milana, Juan Pablo; Paim, Paulo Sergio Gomes; Facies and depositional architecture according to a jet efflux model of a late Paleozoic tidewater grounding-line system from the Itararé Group (Paraná Basin), southern Brazil; Pergamon-Elsevier Science Ltd; Journal of South American Earth Sciences; 67; 4-2016; 180-200 0895-9811 CONICET Digital CONICET |
op_rights |
info:eu-repo/semantics/restrictedAccess https://creativecommons.org/licenses/by-nc-nd/2.5/ar/ |
op_doi |
https://doi.org/10.1016/j.jsames.2016.02.008 |
container_title |
Journal of South American Earth Sciences |
container_volume |
67 |
container_start_page |
180 |
op_container_end_page |
200 |
_version_ |
1779320876526731264 |