| Full text | |
| Author(s): Show less - |
Alcides Nobrega Sial
[1]
;
Claudio Gaucher
[2]
;
Aroldo Misi
[3]
;
Paulo Cesar Boggiani
[4]
;
Carlos José Souza de Alvarenga
[5]
;
Valderez Pinto Ferreira
[6]
;
Marcio Martins Pimentel
[7]
;
José Augusto Pedreira
[8]
;
Lucas Verissimo Warren
[9]
;
Rodrigo Fernández-Ramírez
[10]
;
Mauro Geraldes
[11]
;
Natan Silva Pereira
[12]
;
Leticia Chiglino
[13]
;
Wilker dos Santos Cezario
[14]
Total Authors: 14
|
| Affiliation: Show less - | [1] Universidade Federal de Pernambuco. Department of Geology - Brasil
[2] Facultad de Ciencias. Department of Geology - Uruguai
[3] Universidade Federal da Bahia - Brasil
[4] Universidade de São Paulo - Brasil
[5] Universidade de Brasília - Brasil
[6] Universidade Federal de Pernambuco. Department of Geology - Brasil
[7] Universidade de Brasília - Brasil
[8] Companhia de Pesquisa de Recursos Minerais - Brasil
[9] Universidade do Estado de São Paulo - Brasil
[10] Universidad Mayor de San Andrés - Bolívia
[11] Universidade do Estado do Rio de Janeiro - Brasil
[12] Universidade Federal de Pernambuco. Department of Geology - Brasil
[13] Universidad de la República - Uruguai
[14] Universidade Federal de Pernambuco. Department of Geology - Brasil
Total Affiliations: 14
|
| Document type: | Journal article |
| Source: | BRAZILIAN JOURNAL OF GEOLOGY; v. 46, n. 3, p. 439-488, 2016-09-00. |
| Abstract | |
ABSTRACT: This report reviews and incorporates new elemental and isotope chemostratigraphic data for correlation of Neoproterozoic carbonate-dominated successions in South America (Argentina, Bolivia, Brazil, Paraguay and Uruguay). These thick mixed carbonate/siliciclastic successions were largely deposited in epicontinental basins or accumulated on passive margins on the edges of cratons (e.g. São Francisco, Amazonia, Rio Apa Block, Pampia and Río de la Plata paleocontinents) during extensional events related to the rifting of the Rodinia Supercontinent. From the stratigraphic point of view, these successions occur as three mega-sequences: glaciogenic, marine carbonate platform (above glaciomarine diamictites or rift successions), and dominantly continental to transitional siliciclastics. In the orogenic belts surrounding cratons, carbonate-dominated successions with important volcanoclastic/siliciclastic contribution have been, in most cases, strongly deformed. The precise ages of these successions remain a matter of debate, but recently new paleontological and geochronological data have considerably constrained depositional intervals. Here, we report high-resolution C, O, Sr, and S isotope trends measured in well-preserved sample sets and mainly use Sr and C isotopes in concert with lithostratigraphic/biostratigraphic observations to provide detailed correlations of these successions. The establishing of a high-level and definite chemostratigraphic correlation between Neoproterozoic basins in South America is the main goal of this work. (AU) | |
| FAPESP's process: | 10/02677-0 - Stable isotope records (C, O and Sr) of the Itapucumi Group and correlation with Corumbá Group (Ediacaran Period) |
| Grantee: | Paulo César Boggiani |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 15/24608-3 - Multi-proxy analysis of the Cerro Negro formation, Argentina: bioestratigraphy and paleoenvironment of the first Ediacaran fossillagerstätte in South America |
| Grantee: | Lucas Verissimo Warren |
| Support Opportunities: | Regular Research Grants |