Geomorphology of Pereiro Massif, Northeast Brazil
The Pereiro Massif, located in northeastern Brazil, has a lithostructural evolution resulting from different cycles, with records related to the Brazilian (Neoproterozoic) orogenic cycles, as well as Mesozoic tectonic events and Cenozoic climatic and depositional cycles. Understanding the morphogene...
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União da Geomorfologia Brasileira
2025-02-01
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| Series: | Revista Brasileira de Geomorfologia |
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| Online Access: | https://rbgeomorfologia.org.br/rbg/article/view/2583 |
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| author | Edmundo Rodrigues de Brito Frederico de Holanda Bastos Vanda Carneiro de Claudino Sales Abner Monteiro Nunes Cordeiro Lionel Siame |
| author_facet | Edmundo Rodrigues de Brito Frederico de Holanda Bastos Vanda Carneiro de Claudino Sales Abner Monteiro Nunes Cordeiro Lionel Siame |
| author_sort | Edmundo Rodrigues de Brito |
| collection | DOAJ |
| description | The Pereiro Massif, located in northeastern Brazil, has a lithostructural evolution resulting from different cycles, with records related to the Brazilian (Neoproterozoic) orogenic cycles, as well as Mesozoic tectonic events and Cenozoic climatic and depositional cycles. Understanding the morphogenesis and morphostructural characterization of the Pereiro Massif involved understanding how the structural and lithological constraints present in the deformation zones of the Precambrian basement, with a preferential NE-SW direction, act in directing the denudational processes responsible for the topographic downwearing due to Cenozoic climatic variations. The analysis of structural conditions allowed the establishment of two macro geomorphological units, subdivided into 5 sub-units, considering the drainage morphometry using the Slope x Extent Index (RDE). Denudation rates, analyzed based on the production of cosmogenic nuclides (10Be) and age measurements by Optically Stimulated Luminescence (OSL) were also adopted in the analysis of the geomorphological evolution of the massif. The main results obtained suggests that the Pereiro Massif is under structural control related to Cretaceous and Cenozoic reactivations, which intensified the denudation processes in the massif, especially in its eastern part, where denudation rates are higher, leaving no clear evidence of neotectonic activity in the morphogenesis and mosphostructure of Pereiro.
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| format | Article |
| id | doaj-art-a4d96091cb854740a6372f672fd7a702 |
| institution | OA Journals |
| issn | 1519-1540 2236-5664 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | União da Geomorfologia Brasileira |
| record_format | Article |
| series | Revista Brasileira de Geomorfologia |
| spelling | doaj-art-a4d96091cb854740a6372f672fd7a7022025-08-20T02:13:45ZengUnião da Geomorfologia BrasileiraRevista Brasileira de Geomorfologia1519-15402236-56642025-02-0126110.20502/rbg.v26i1.2583Geomorphology of Pereiro Massif, Northeast BrazilEdmundo Rodrigues de Brito0Frederico de Holanda Bastos1Vanda Carneiro de Claudino Sales2Abner Monteiro Nunes Cordeiro3Lionel Siame4State University of Ceará, Postgraduate Program in Geography, Fortaleza, BrazilState University of Ceará, Postgraduate Program in Geography, Fortaleza, BrazilFederal University of Pelotas, Postgraduate Program in Geography, Pelotas, BrazilFederal University of Rio Grande do Norte, Department of Geography, Seridó Higher Education Center, Caicó, BrazilAix-Marseille University, Environmental Geosciences Research and Teaching Center, Aix-En-Provence, FrenchThe Pereiro Massif, located in northeastern Brazil, has a lithostructural evolution resulting from different cycles, with records related to the Brazilian (Neoproterozoic) orogenic cycles, as well as Mesozoic tectonic events and Cenozoic climatic and depositional cycles. Understanding the morphogenesis and morphostructural characterization of the Pereiro Massif involved understanding how the structural and lithological constraints present in the deformation zones of the Precambrian basement, with a preferential NE-SW direction, act in directing the denudational processes responsible for the topographic downwearing due to Cenozoic climatic variations. The analysis of structural conditions allowed the establishment of two macro geomorphological units, subdivided into 5 sub-units, considering the drainage morphometry using the Slope x Extent Index (RDE). Denudation rates, analyzed based on the production of cosmogenic nuclides (10Be) and age measurements by Optically Stimulated Luminescence (OSL) were also adopted in the analysis of the geomorphological evolution of the massif. The main results obtained suggests that the Pereiro Massif is under structural control related to Cretaceous and Cenozoic reactivations, which intensified the denudation processes in the massif, especially in its eastern part, where denudation rates are higher, leaving no clear evidence of neotectonic activity in the morphogenesis and mosphostructure of Pereiro. https://rbgeomorfologia.org.br/rbg/article/view/2583Borborema ProvinceBrazilian SemiaridGranitic MassifCosmogenic Nuclides |
| spellingShingle | Edmundo Rodrigues de Brito Frederico de Holanda Bastos Vanda Carneiro de Claudino Sales Abner Monteiro Nunes Cordeiro Lionel Siame Geomorphology of Pereiro Massif, Northeast Brazil Revista Brasileira de Geomorfologia Borborema Province Brazilian Semiarid Granitic Massif Cosmogenic Nuclides |
| title | Geomorphology of Pereiro Massif, Northeast Brazil |
| title_full | Geomorphology of Pereiro Massif, Northeast Brazil |
| title_fullStr | Geomorphology of Pereiro Massif, Northeast Brazil |
| title_full_unstemmed | Geomorphology of Pereiro Massif, Northeast Brazil |
| title_short | Geomorphology of Pereiro Massif, Northeast Brazil |
| title_sort | geomorphology of pereiro massif northeast brazil |
| topic | Borborema Province Brazilian Semiarid Granitic Massif Cosmogenic Nuclides |
| url | https://rbgeomorfologia.org.br/rbg/article/view/2583 |
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