Cross-strata palaeocurrent analysis using virtual outcrops

Detalhes bibliográficos
Autor(a) principal: Freitas, Bernardo T.
Data de Publicação: 2021
Outros Autores: Silva, Leonardo H. G., Almeida, Renato P., Galeazzi, Cristiano P., Figueiredo, Heitor G., Tamura, Larissa N., Janikian, Liliane, Figueiredo, Felipe T., Assine, Mario L. [UNESP]
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Institucional da UNESP
Texto Completo: http://dx.doi.org/10.1111/sed.12855
http://hdl.handle.net/11449/207596
Resumo: Although virtual outcrops or digital outcrop model applications in geological studies are becoming increasingly common, virtually no attention has been given to acquisition of palaeocurrent data from cross-strata. Palaeocurrent indicators are abundant in the sedimentary record, mainly as cross-strata, and present compelling implications for basin analysis, plate tectonics and palaeoenvironmental reconstructions, as well as for sediment transport systems. Palaeocurrents from cross-strata also comprise a quantifiable parameter in sedimentary successions that can be used in quantitative modelling of depositional architecture with implications for reservoir characterization through outcrop analogue studies. A common obstacle in obtaining large cross-strata orientation datasets is the limited access to steep and high outcrop faces, as well as financial and time restrictions on field work. To overcome these issues, the simplest workflow for drone-based acquisition, photogrammetric processing and analysis of virtual outcrops aiming at the attainment of palaeocurrent data from cross-strata is appraised here. The results show that orientations of cross-beds measured on virtual outcrops, with and without ground control points, and using two different levels of resolution downsampling, are comparable to field measurements using analogue and electronic devices. Time and financial resources can thus be saved by using the straightforward method presented here to supplement palaeocurrent mapping across wide areas and distinct stratigraphic intervals.
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spelling Cross-strata palaeocurrent analysis using virtual outcrops3D photogrammetrycross-stratadigital outcrop model (DOM)RPAStructure from MotionUAVAlthough virtual outcrops or digital outcrop model applications in geological studies are becoming increasingly common, virtually no attention has been given to acquisition of palaeocurrent data from cross-strata. Palaeocurrent indicators are abundant in the sedimentary record, mainly as cross-strata, and present compelling implications for basin analysis, plate tectonics and palaeoenvironmental reconstructions, as well as for sediment transport systems. Palaeocurrents from cross-strata also comprise a quantifiable parameter in sedimentary successions that can be used in quantitative modelling of depositional architecture with implications for reservoir characterization through outcrop analogue studies. A common obstacle in obtaining large cross-strata orientation datasets is the limited access to steep and high outcrop faces, as well as financial and time restrictions on field work. To overcome these issues, the simplest workflow for drone-based acquisition, photogrammetric processing and analysis of virtual outcrops aiming at the attainment of palaeocurrent data from cross-strata is appraised here. The results show that orientations of cross-beds measured on virtual outcrops, with and without ground control points, and using two different levels of resolution downsampling, are comparable to field measurements using analogue and electronic devices. Time and financial resources can thus be saved by using the straightforward method presented here to supplement palaeocurrent mapping across wide areas and distinct stratigraphic intervals.Geology Lab School of Technology University of Campinas, Rua Paschoal Marmo, 1888, Jardim Nova ItáliaInstitute of Geosciences University of São Paulo, Rua do Lago, 562, Cidade UniversitáriaInstitute of Marine Science São Paulo Federal University, Rua Carvalho de Mendonça, 144, EncruzilhadaDepartamento de Geologia (DGEOL) / Programa de Pós-graduação em Geociências e Análise de Bacias Universidade Federal de Sergipe, Marechal Rondon Ave., Geology Bldg., Multi-user Complex, Rosa ElzeDepartamento de Geologia Aplicada Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista/UNESP, Avenida 24-A, Bela Vista, 178Departamento de Geologia Aplicada Instituto de Geociências e Ciências Exatas Universidade Estadual Paulista/UNESP, Avenida 24-A, Bela Vista, 178Universidade Estadual de Campinas (UNICAMP)Universidade de São Paulo (USP)São Paulo Federal UniversityUniversidade Federal de Sergipe (UFS)Universidade Estadual Paulista (Unesp)Freitas, Bernardo T.Silva, Leonardo H. G.Almeida, Renato P.Galeazzi, Cristiano P.Figueiredo, Heitor G.Tamura, Larissa N.Janikian, LilianeFigueiredo, Felipe T.Assine, Mario L. [UNESP]2021-06-25T10:57:53Z2021-06-25T10:57:53Z2021-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://dx.doi.org/10.1111/sed.12855Sedimentology.1365-30910037-0746http://hdl.handle.net/11449/20759610.1111/sed.128552-s2.0-85104072255Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengSedimentologyinfo:eu-repo/semantics/openAccess2021-10-23T17:37:41Zoai:repositorio.unesp.br:11449/207596Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T19:44:27.126270Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false
dc.title.none.fl_str_mv Cross-strata palaeocurrent analysis using virtual outcrops
title Cross-strata palaeocurrent analysis using virtual outcrops
spellingShingle Cross-strata palaeocurrent analysis using virtual outcrops
Freitas, Bernardo T.
3D photogrammetry
cross-strata
digital outcrop model (DOM)
RPA
Structure from Motion
UAV
title_short Cross-strata palaeocurrent analysis using virtual outcrops
title_full Cross-strata palaeocurrent analysis using virtual outcrops
title_fullStr Cross-strata palaeocurrent analysis using virtual outcrops
title_full_unstemmed Cross-strata palaeocurrent analysis using virtual outcrops
title_sort Cross-strata palaeocurrent analysis using virtual outcrops
author Freitas, Bernardo T.
author_facet Freitas, Bernardo T.
Silva, Leonardo H. G.
Almeida, Renato P.
Galeazzi, Cristiano P.
Figueiredo, Heitor G.
Tamura, Larissa N.
Janikian, Liliane
Figueiredo, Felipe T.
Assine, Mario L. [UNESP]
author_role author
author2 Silva, Leonardo H. G.
Almeida, Renato P.
Galeazzi, Cristiano P.
Figueiredo, Heitor G.
Tamura, Larissa N.
Janikian, Liliane
Figueiredo, Felipe T.
Assine, Mario L. [UNESP]
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade Estadual de Campinas (UNICAMP)
Universidade de São Paulo (USP)
São Paulo Federal University
Universidade Federal de Sergipe (UFS)
Universidade Estadual Paulista (Unesp)
dc.contributor.author.fl_str_mv Freitas, Bernardo T.
Silva, Leonardo H. G.
Almeida, Renato P.
Galeazzi, Cristiano P.
Figueiredo, Heitor G.
Tamura, Larissa N.
Janikian, Liliane
Figueiredo, Felipe T.
Assine, Mario L. [UNESP]
dc.subject.por.fl_str_mv 3D photogrammetry
cross-strata
digital outcrop model (DOM)
RPA
Structure from Motion
UAV
topic 3D photogrammetry
cross-strata
digital outcrop model (DOM)
RPA
Structure from Motion
UAV
description Although virtual outcrops or digital outcrop model applications in geological studies are becoming increasingly common, virtually no attention has been given to acquisition of palaeocurrent data from cross-strata. Palaeocurrent indicators are abundant in the sedimentary record, mainly as cross-strata, and present compelling implications for basin analysis, plate tectonics and palaeoenvironmental reconstructions, as well as for sediment transport systems. Palaeocurrents from cross-strata also comprise a quantifiable parameter in sedimentary successions that can be used in quantitative modelling of depositional architecture with implications for reservoir characterization through outcrop analogue studies. A common obstacle in obtaining large cross-strata orientation datasets is the limited access to steep and high outcrop faces, as well as financial and time restrictions on field work. To overcome these issues, the simplest workflow for drone-based acquisition, photogrammetric processing and analysis of virtual outcrops aiming at the attainment of palaeocurrent data from cross-strata is appraised here. The results show that orientations of cross-beds measured on virtual outcrops, with and without ground control points, and using two different levels of resolution downsampling, are comparable to field measurements using analogue and electronic devices. Time and financial resources can thus be saved by using the straightforward method presented here to supplement palaeocurrent mapping across wide areas and distinct stratigraphic intervals.
publishDate 2021
dc.date.none.fl_str_mv 2021-06-25T10:57:53Z
2021-06-25T10:57:53Z
2021-01-01
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://dx.doi.org/10.1111/sed.12855
Sedimentology.
1365-3091
0037-0746
http://hdl.handle.net/11449/207596
10.1111/sed.12855
2-s2.0-85104072255
url http://dx.doi.org/10.1111/sed.12855
http://hdl.handle.net/11449/207596
identifier_str_mv Sedimentology.
1365-3091
0037-0746
10.1111/sed.12855
2-s2.0-85104072255
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Sedimentology
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv Scopus
reponame:Repositório Institucional da UNESP
instname:Universidade Estadual Paulista (UNESP)
instacron:UNESP
instname_str Universidade Estadual Paulista (UNESP)
instacron_str UNESP
institution UNESP
reponame_str Repositório Institucional da UNESP
collection Repositório Institucional da UNESP
repository.name.fl_str_mv Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)
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