A study of structural lineaments in Pantanal (Brazil) using remote sensing data

This paper presents a study of the structural lineaments of the Pantanal extracted visually from satellite images (CBERS-2B satellite, Wide Field Imager sensor, a free image available in INTERNET) and a comparison with the structural lineaments of Precambrian and Paleozoic rocks surrounding the Cenozoic Pantanal Basin. Using a free software for satellite image analysis, the photointerpretation showed that the NS, NE and NW directions observed on the Pantanal satellite images are the same recorded in the older rocks surrounding the basin, suggesting reactivation of these basement structural directions during the Quaternary. So the Pantanal Basin has an active tectonics and its evolution seems to be linked to changes that occurred during the Andean subduction.

free remote sensing software; free satellite images; structural geology; lineaments; photointerpretation; Pantanal

Authorship

ANTONIO C. PARANHOS FILHO

Centro de Ciências Exatas e Tecnologia, Universidade Federal de Mato Grosso do Sul, 79070-900, Campo Grande, MS, BrasilUniversidade Federal de Mato Grosso do SulBrasilCampo Grande, MS, BrasilCentro de Ciências Exatas e Tecnologia, Universidade Federal de Mato Grosso do Sul, 79070-900, Campo Grande, MS, Brasil

Instituto de Geociências, Universidade de São Paulo, 05508-080, São Paulo, SP, BrasilUniversidade de São PauloBrasilSão Paulo, SP, BrasilInstituto de Geociências, Universidade de São Paulo, 05508-080, São Paulo, SP, Brasil

* Bolsista CNPq

ALEXIS R. NUMMER

Departamento de Geociências, Instituto de Agronomia, Universidade Federal Rural do Rio de Janeiro, 23890-000, Seropédica, RJ, BrasilUniversidade Federal Rural do Rio de JaneiroBrasilSeropédica, RJ, BrasilDepartamento de Geociências, Instituto de Agronomia, Universidade Federal Rural do Rio de Janeiro, 23890-000, Seropédica, RJ, Brasil

** Estagiário de Pós-Doutorado

EDILCE A. ALBREZ

ALISSON A. RIBEIRO

RÔMULO MACHADO

Correspondence to: Alisson André Ribeiro E-mail: geotec.ribeiro@gmail.com

*
Bolsista CNPq

**
Estagiário de Pós-Doutorado

SCIMAGO INSTITUTIONS RANKINGS

Figures

Figures (5)

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Figure 1
The geological context of Pantanal in relation to regional tectonic units (simplified from Schobbenhaus and Bellizzia 2001): (1) Precambrian metamorphic rocks; (2) Gondwana sequence with Paleozoic sedimentary rocks; (3) Tertiary sedimentary rocks, and (4) Cenozoic sequences including Pantanal. It is important to observe the structural context with the metamorphic rocks of Paraguay Belt to the north; Bodoquena Hills to the south, composed by carbonates and other metamorphites; the Paraná Basin to the east, and Precambrian rocks of the Tucavaca Belt and Bolivian Cenozoic sediments to the west.

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Figure 2
Map of regional lineaments surrounding the Pantanal (structural data from CPRM – Schobbenhaus and Bellizzia 2001). The Upper Paraguay basin and Pantanal limits are from PROBIO (Silva and Abdon 1998Silva JSV and Abdon MM. 1998. Delimitação do Pantanal Brasileiro e suas sub-regiões. Pesquisa agropecuária brasileira. Brasília, v. 33(out), Número Especial, p. 1703-1711.).

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Figure 3
The lineaments obtained through photointerpretation of satellite images. The main systems are NNE/SSW, EW, NE/SW and NW/SE (the last two being associated sub-systems).

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Figure 4
Rose diagrams with the lineaments from CPRM (A) and from the photointerpretation of the satellite image (B). No stronger trend is depicted in “A”, except for a suggestion of NE and NS structures. The rose diagrams with length-proportional frequency show the importance of the NE direction, which is associated with the Transbrasiliano Lineament. There are two important systems marked on B: one trending ENE and the other trending almost EW.

Thumbnail

Figure 5
A series of hills aligned according to the NS direction. The picture was taken from the Bodoquena Belt looking northwards.

Figure 1 The geological context of Pantanal in relation to regional tectonic units (simplified from Schobbenhaus and Bellizzia 2001): (1) Precambrian metamorphic rocks; (2) Gondwana sequence with Paleozoic sedimentary rocks; (3) Tertiary sedimentary rocks, and (4) Cenozoic sequences including Pantanal. It is important to observe the structural context with the metamorphic rocks of Paraguay Belt to the north; Bodoquena Hills to the south, composed by carbonates and other metamorphites; the Paraná Basin to the east, and Precambrian rocks of the Tucavaca Belt and Bolivian Cenozoic sediments to the west.

Figure 2 Map of regional lineaments surrounding the Pantanal (structural data from CPRM – Schobbenhaus and Bellizzia 2001). The Upper Paraguay basin and Pantanal limits are from PROBIO (Silva and Abdon 1998Silva JSV and Abdon MM. 1998. Delimitação do Pantanal Brasileiro e suas sub-regiões. Pesquisa agropecuária brasileira. Brasília, v. 33(out), Número Especial, p. 1703-1711.).

Figure 3 The lineaments obtained through photointerpretation of satellite images. The main systems are NNE/SSW, EW, NE/SW and NW/SE (the last two being associated sub-systems).

Figure 4 Rose diagrams with the lineaments from CPRM (A) and from the photointerpretation of the satellite image (B). No stronger trend is depicted in “A”, except for a suggestion of NE and NS structures. The rose diagrams with length-proportional frequency show the importance of the NE direction, which is associated with the Transbrasiliano Lineament. There are two important systems marked on B: one trending ENE and the other trending almost EW.

Figure 5 A series of hills aligned according to the NS direction. The picture was taken from the Bodoquena Belt looking northwards.

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A study of structural lineaments in Pantanal (Brazil) using remote sensing data

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[1] Correspondence to: Alisson André Ribeiro E-mail: geotec.ribeiro@gmail.com