Stratigraphy of the Roraima Supergroup along the Brazil-Guyana border in the Guiana shield, Northern Amazonian Craton - results of the Brazil-Guyana Geology and Geodiversity Mapping Project
2017; Sociedade Brasileira de Geologia; Volume: 47; Issue: 1 Linguagem: Inglês
10.1590/2317-4889201720160139
ISSN2317-4889
AutoresNélson Joaquim Reis, Serge Nadeau, Lêda Maria Barreto Fraga, Léandro Menezes Betiollo, Maria Telma Lins Faraco, Jimmy Reece, Deokumar Lachhman, Randy Ault,
Tópico(s)Geography and Environmental Studies
ResumoABSTRACT: The Geological and Geodiversity Mapping binational program along the Brazil-Guyana border zone allowed reviewing and integrating the stratigraphy and nomenclature of the Roraima Supergroup along the Pakaraima Sedimentary Block present in northeastern Brazil and western Guyana. The area mapped corresponds to a buffer zone of approximately 25 km in width on both sides of the border, of a region extending along the Maú-Ireng River between Mount Roraima (the triple-border region) and Mutum Village in Brazil and Monkey Mountain in Guyana. The south border of the Roraima basin is overlain exclusively by effusive and volcaniclastic rocks of the Surumu Group of Brazil and its correlated equivalent the Burro-Burro Group of Guyana.
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