Geological knowledge advances on the Alto Rio Negro region, northwestern Amazonian Craton, Brazil: a review

This paper presents a literature review of the geology of the Alto Rio Negro region, located in northwestern Brazil. Firstly, we summarize the Amazonian Craton tectonic models and how the study area fits in these different tectonic models. The aim is to organize the literature data and better guide...

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Autores principales:	Túlio Amós de Araújo Mendes, Rielva Solimairy Campelo do Nascimento, Renata da Silva Veras, Marcelo Esteves Almeida, Luiz Guilherme Knauer
Formato:	article
Lenguaje:	EN
Publicado:	Serviço Geológico do Brasil (CPRM) 2021
Materias:	Alto Rio Negro Amazonian Craton Precambrian Geochronological provinces Guiana Shield Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/ef588b6bf5684444a75cceddadfff493
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spelling	oai:doaj.org-article:ef588b6bf5684444a75cceddadfff4932021-11-06T14:12:22ZGeological knowledge advances on the Alto Rio Negro region, northwestern Amazonian Craton, Brazil: a review2595-1939https://doaj.org/article/ef588b6bf5684444a75cceddadfff4932021-11-01T00:00:00Zhttps://200.20.109.11/index.php/journal/article/view/161https://doaj.org/toc/2595-1939 This paper presents a literature review of the geology of the Alto Rio Negro region, located in northwestern Brazil. Firstly, we summarize the Amazonian Craton tectonic models and how the study area fits in these different tectonic models. The aim is to organize the literature data and better guide the consultation for new studies. The first geological reports about the Alto Rio Negro are from the Mid-19th century, when the British naturalist Alfred Russel Wallace travels to this country and, since then, long periods of scientific production absence occur. However, after the RADAMBRASIL Project in the 1970s, there was a significant research advance. Recent publications reveal a complex tectonic evolution, with three events that mark periods of generation and reworking of the Proterozoic basement. Two Paleoproterozoic magmatic arc systems generated the geological basement. The Calymmian collision of these terrains produced a large volume of crustal granites, in addition to pre-, and post-tectonic granites. A crustal reworking period (1.4-1.1 Ga) reactivated the basement structures and, possibly, generated the Ectasian carbonatitic intrusions. There are many difficulties to access this region, so the literature data are of great value and provide a background for new studies. The lack of more detailed geological maps covering the Alto Rio Negro region is the main obstacle. Still, it offers a fertile research field for geologists interested in contributing to diverse research fields of Geology focusing on the Amazonian Craton. Túlio Amós de Araújo MendesRielva Solimairy Campelo do NascimentoRenata da Silva VerasMarcelo Esteves AlmeidaLuiz Guilherme KnauerServiço Geológico do Brasil (CPRM)articleAlto Rio NegroAmazonian CratonPrecambrianGeochronological provincesGuiana ShieldGeologyQE1-996.5ENJournal of the Geological Survey of Brazil, Vol 4, Iss 3 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Alto Rio Negro Amazonian Craton Precambrian Geochronological provinces Guiana Shield Geology QE1-996.5
spellingShingle	Alto Rio Negro Amazonian Craton Precambrian Geochronological provinces Guiana Shield Geology QE1-996.5 Túlio Amós de Araújo Mendes Rielva Solimairy Campelo do Nascimento Renata da Silva Veras Marcelo Esteves Almeida Luiz Guilherme Knauer Geological knowledge advances on the Alto Rio Negro region, northwestern Amazonian Craton, Brazil: a review
description	This paper presents a literature review of the geology of the Alto Rio Negro region, located in northwestern Brazil. Firstly, we summarize the Amazonian Craton tectonic models and how the study area fits in these different tectonic models. The aim is to organize the literature data and better guide the consultation for new studies. The first geological reports about the Alto Rio Negro are from the Mid-19th century, when the British naturalist Alfred Russel Wallace travels to this country and, since then, long periods of scientific production absence occur. However, after the RADAMBRASIL Project in the 1970s, there was a significant research advance. Recent publications reveal a complex tectonic evolution, with three events that mark periods of generation and reworking of the Proterozoic basement. Two Paleoproterozoic magmatic arc systems generated the geological basement. The Calymmian collision of these terrains produced a large volume of crustal granites, in addition to pre-, and post-tectonic granites. A crustal reworking period (1.4-1.1 Ga) reactivated the basement structures and, possibly, generated the Ectasian carbonatitic intrusions. There are many difficulties to access this region, so the literature data are of great value and provide a background for new studies. The lack of more detailed geological maps covering the Alto Rio Negro region is the main obstacle. Still, it offers a fertile research field for geologists interested in contributing to diverse research fields of Geology focusing on the Amazonian Craton.
format	article
author	Túlio Amós de Araújo Mendes Rielva Solimairy Campelo do Nascimento Renata da Silva Veras Marcelo Esteves Almeida Luiz Guilherme Knauer
author_facet	Túlio Amós de Araújo Mendes Rielva Solimairy Campelo do Nascimento Renata da Silva Veras Marcelo Esteves Almeida Luiz Guilherme Knauer
author_sort	Túlio Amós de Araújo Mendes
title	Geological knowledge advances on the Alto Rio Negro region, northwestern Amazonian Craton, Brazil: a review
title_short	Geological knowledge advances on the Alto Rio Negro region, northwestern Amazonian Craton, Brazil: a review
title_full	Geological knowledge advances on the Alto Rio Negro region, northwestern Amazonian Craton, Brazil: a review
title_fullStr	Geological knowledge advances on the Alto Rio Negro region, northwestern Amazonian Craton, Brazil: a review
title_full_unstemmed	Geological knowledge advances on the Alto Rio Negro region, northwestern Amazonian Craton, Brazil: a review
title_sort	geological knowledge advances on the alto rio negro region, northwestern amazonian craton, brazil: a review
publisher	Serviço Geológico do Brasil (CPRM)
publishDate	2021
url	https://doaj.org/article/ef588b6bf5684444a75cceddadfff493
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Geological knowledge advances on the Alto Rio Negro region, northwestern Amazonian Craton, Brazil: a review

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