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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

Autor: Nelson Joaquim Reis, Serge Nadeau, Leda Maria Fraga, Leandro Menezes Betiollo, Maria Telma Lins Faraco, Jimmy Reece, Deokumar Lachhman, Randy Ault

Publikováno v: Brazilian Journal of Geology, Vol 47, Iss 1, Pp 43-57

ABSTRACT: 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 no

Externí odkaz: https://doaj.org/article/05203c04d66d44eda1b867abe6031d2b

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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

Autor: Nelson Joaquim Reis, Deokumar Lachhman, Serge Nadeau, Maria Telma Lins Faraco, Randy Ault, Leandro Menezes Betiollo, Jimmy Reece, Lêda Maria Barreto Fraga

Publikováno v: Brazilian Journal of Geology v.47 n.1 2017
Brazilian Journal of Geology
Sociedade Brasileira de Geologia (SBGEO)
instacron:SBGEO
Brazilian Journal of Geology, Vol 47, Iss 1, Pp 43-57

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

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7f43df492edeb855a7363dfb4d9ffbba
https://doi.org/10.1590/2317-4889201720160139

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Guyana: the Lost Hadean crust of South America?

Autor: Nelson Joaquim Reis, Deokumar Lachhman, Jimmy Reece, Randy Ault, Maria Telma Lins Faraco, Lêda Maria Barreto Fraga, Serge Nadeau, Leandro Menezes Betiollo, Wei Chen

Publikováno v: Brazilian Journal of Geology. 43:601-606

A Hadean zircon xenocryst with a U-Pb zircon age of 4,219 ± 19 Ma, along with several zircon xenocrysts of Archean age (ca. 2,510 to 3,811 Ma) were found in a rock of the Paleoproterozoic Iwokrama Formation, which includes felsic volcanics and co-ma

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::84d47376af5b28c4618e908dc293ee45
https://doi.org/10.5327/z2317-48892013000400002

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