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Radiometric Ages from the Serra dos Carajás Area, Northern Brazil

1975; Geological Society of America; Volume: 86; Issue: 7 Linguagem: Inglês

10.1130/0016-7606(1975)86 2.0.co;2

1943-2674

Celso B. Gomes, Umberto G. Cordani, Miguel Ângelo Stipp Basei,

Geochemistry and Geologic Mapping

Research Article| July 01, 1975 Radiometric Ages from the Serra dos Carajás Area, Northern Brazil CELSO B. GOMES; CELSO B. GOMES 1Institudo de Geociências, Universidade de São Paulo, São Pauto, Brasil Search for other works by this author on: GSW Google Scholar UMBERTO G. CORDANI; UMBERTO G. CORDANI 1Institudo de Geociências, Universidade de São Paulo, São Pauto, Brasil Search for other works by this author on: GSW Google Scholar MIGUEL A. S. BASEI MIGUEL A. S. BASEI 2RADAM-Belém, Trav. Benjamim Constant, 1027, 66000 Belém-Para, Brasil Search for other works by this author on: GSW Google Scholar GSA Bulletin (1975) 86 (7): 939–942. https://doi.org/10.1130/0016-7606(1975)86 2.0.CO;2 Article history first online: 01 Jun 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation CELSO B. GOMES, UMBERTO G. CORDANI, MIGUEL A. S. BASEI; Radiometric Ages from the Serra dos Carajás Area, Northern Brazil. GSA Bulletin 1975;; 86 (7): 939–942. doi: https://doi.org/10.1130/0016-7606(1975)86 2.0.CO;2 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyGSA Bulletin Search Advanced Search Abstract K-Ar and Rb-Sr age determinations for rocks of the Serra dos Carajás area, northern Brazil, indicate that the rocks were affected by the Transamazonian orogenic cycle, whose syntectonic phase is supposed to have taken place at about 1,960 m.y. ago. Posttectonic activity in the region is related to some granitic intrusions about 1,800 m.y. old, followed by the accumulation of postorogenic sedimentary and associated volcanic rocks. One of the anorogenic bodies is about 1,400 m.y. old. A late Paleozoic magmatic episode is indicated by diabase dike intrusions. Events prior to the Transamazonian orogeny have been also recognized in the area between Serra do Cinzento and Serra Buritirama. This content is PDF only. Please click on the PDF icon to access. First Page Preview Close Modal You do not have access to this content, please speak to your institutional administrator if you feel you should have access.