Morphostructural analysis in the Pelotas Basin-RS region from Bouguer anomalies maps and gravimetric profiles
Gravimetric data, including those from satellite missions, are an important tool in regional studies for areas involving geological and oceanographic applications, as aid in the characterization, evolution and behavior of the Earth's crust, both for continental areas as oceanic Gravity data wer...
| Principais autores: | Gagg, Gilberto, Souza, Sérgio Florêncio de |
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| Idioma: | Português |
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Universidade Tecnológica Federal do Paraná (UTFPR)
2019
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http://periodicos.utfpr.edu.br/rbgeo/article/view/8799 |
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peri-article-87992019-06-03T19:19:27Z Morphostructural analysis in the Pelotas Basin-RS region from Bouguer anomalies maps and gravimetric profiles Análise morfoestrutural na região da bacia de Pelotas a partir do emprego de mapas de anomalia Bouguer e perfis gravimétricos Gagg, Gilberto Souza, Sérgio Florêncio de 1-07-02-10-5 Análise morofestrutural; Anomalia Bouguer; Perfis gravimétricos Morphostructural analysis; Bouguer anomalies; Gravimetric profiles Gravimetric data, including those from satellite missions, are an important tool in regional studies for areas involving geological and oceanographic applications, as aid in the characterization, evolution and behavior of the Earth's crust, both for continental areas as oceanic Gravity data were used to the morphostructural analysis in the Pelotas Basin-RS region. The EGM2008 geopotential model was adopted through the Bouguer anomalies, which made possible the preparation of maps and gravimetric profiles. Through the analysis of Bouguer anomalies maps and the gravimetric profiles generated, it was observed that Bouguer anomalies increase positively from coast towards to the major ocean depths, which characterizes a progressive crustal thinning associated with the continental drift. The behavior of the Bouguer anomalies showed the presence of a rupture, known as Charneira Albo-Aptiana or Falha de Rio Grande, on the continental shelf. The incidence of significantly positive anomalies values on the Baixo de Mostardas region suggests the presence of a higher-density mass in this region. The resolution of the gravimetric data used in this research did not show the presence of paleochannels in the region, requiring a greater spatial resolution, associated with other methods of research. Dados gravimétricos, inclusive aqueles advindos de missões satelitais, são uma grande ferramenta nos estudos regionais para áreas que envolvam aplicações geológicas e mesmo oceanográficas, pois auxiliam em estudos sobre a caracterização, evolução e o comportamento da crosta terrestre, tanto para áreas continentais como oceânicas. Dados de gravimetria foram usados como subsídio à análise morfoestrutural na região da Bacia de Pelotas-RS. Foi adotado o modelo geopotencial EGM2008 através das anomalias Bouguer, que possibilitou a elaboração de mapas e perfis gravimétricos. Através da análise dos mapas de anomalias Bouguer e perfis gravimétricos gerados, verificou-se que as anomalias Bouguer aumentam positivamente da costa em direção às maiores profundidades oceânicas, o que caracteriza um progressivo afinamento crustal associado à deriva continental. O comportamento das anomalias Bouguer evidenciou a presença de uma ruptura conhecida como Charneira Albo-aptiana ou Falha de Rio Grande na plataforma continental. A incidência de valores de anomalias significativamente positivas na região do Baixo de Mostardas sugere a presença de uma massa de maior densidade nesta região. A resolução dos dados gravimétricos utilizados neste estudo não permitiu evidenciar a presença de paleocanais na região, sendo necessária uma maior resolução espacial, associada a outros métodos de investigação. Universidade Tecnológica Federal do Paraná (UTFPR) 2019-04-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf http://periodicos.utfpr.edu.br/rbgeo/article/view/8799 10.3895/rbgeo.v7n1.8799 Revista Brasileira de Geomática; v. 7, n. 1 (2019); 003-022 Revista Brasileira de Geomática; v. 7, n. 1 (2019); 003-022 2317-4285 10.3895/rbgeo.v7n1 por http://periodicos.utfpr.edu.br/rbgeo/article/view/8799/5813 Direitos autorais 2019 CC-BY http://creativecommons.org/licenses/by/4.0 |
| institution |
Universidade Tecnológica Federal do Paraná |
| collection |
PERI |
| language |
Português |
| format |
Artigo |
| author |
Gagg, Gilberto Souza, Sérgio Florêncio de |
| spellingShingle |
Gagg, Gilberto Souza, Sérgio Florêncio de Morphostructural analysis in the Pelotas Basin-RS region from Bouguer anomalies maps and gravimetric profiles |
| author_sort |
Gagg, Gilberto |
| title |
Morphostructural analysis in the Pelotas Basin-RS region from Bouguer anomalies maps and gravimetric profiles |
| title_short |
Morphostructural analysis in the Pelotas Basin-RS region from Bouguer anomalies maps and gravimetric profiles |
| title_full |
Morphostructural analysis in the Pelotas Basin-RS region from Bouguer anomalies maps and gravimetric profiles |
| title_fullStr |
Morphostructural analysis in the Pelotas Basin-RS region from Bouguer anomalies maps and gravimetric profiles |
| title_full_unstemmed |
Morphostructural analysis in the Pelotas Basin-RS region from Bouguer anomalies maps and gravimetric profiles |
| title_sort |
morphostructural analysis in the pelotas basin-rs region from bouguer anomalies maps and gravimetric profiles |
| description |
Gravimetric data, including those from satellite missions, are an important tool in regional studies for areas involving geological and oceanographic applications, as aid in the characterization, evolution and behavior of the Earth's crust, both for continental areas as oceanic Gravity data were used to the morphostructural analysis in the Pelotas Basin-RS region. The EGM2008 geopotential model was adopted through the Bouguer anomalies, which made possible the preparation of maps and gravimetric profiles. Through the analysis of Bouguer anomalies maps and the gravimetric profiles generated, it was observed that Bouguer anomalies increase positively from coast towards to the major ocean depths, which characterizes a progressive crustal thinning associated with the continental drift. The behavior of the Bouguer anomalies showed the presence of a rupture, known as Charneira Albo-Aptiana or Falha de Rio Grande, on the continental shelf. The incidence of significantly positive anomalies values on the Baixo de Mostardas region suggests the presence of a higher-density mass in this region. The resolution of the gravimetric data used in this research did not show the presence of paleochannels in the region, requiring a greater spatial resolution, associated with other methods of research. |
| publisher |
Universidade Tecnológica Federal do Paraná (UTFPR) |
| publishDate |
2019 |
| url |
http://periodicos.utfpr.edu.br/rbgeo/article/view/8799 |
| _version_ |
1805295414193160192 |
| score |
10,814766 |