Genesis of clayey bodies in Quadrilátero Ferrífero, Minas Gerais, Brazil.
Autor(a) principal: | |
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Data de Publicação: | 2004 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFOP |
Texto Completo: | http://www.repositorio.ufop.br/handle/123456789/4010 https://doi.org/10.1016/S0341-8162(03)00106-1 |
Resumo: | This work deals with macromorphological, mineralogical, micromorphological and geochemical studies in clayey bodies from Quadrilátero Ferrı́fero in order to define their genesis and formation conditions in this geologic province from Minas Gerais State. Methodologies, based on the description of outcrops and drill cores, using X-ray diffraction (XRD), differential and gravimetric thermal analyses (DTA-TG), scanning electron microscopy (SEM), optical analysis of thin sections and chemical analyses allowed for the definition of two different genetic types of clayey bodies. One type, SET 1, occurs upon saprolitic material from Paleoproterozoic rocks in unconformity contact. It is constituted, from the base to the top, by four facies: nodular, ferruginous kaolinitic, mottled kaolinitic, and massive kaolinitic. The origin of this set is related to the deposition of lateritic materials by gravitational process. The faciological differentiation of this set is related to the syn-depositional process and postdepositional mechanisms of ferruginization and deferruginization. The second type, SET 2, is composed by an ilmenitic–kaolinitic tabular facies in discordant relationships with the saprolite material from Paleoproterozoic rocks. The origin of this second set is related to “in situ” alteration of intrusive rocks of acidic composition. |
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Santos, Marcelo CabralVarajão, Angélica Fortes Drummond ChicarinoYvon, Jacques2014-11-20T16:39:31Z2014-11-20T16:39:31Z2004SANTOS, M. C.; VARAJÃO, A. F. D. C.; YVON, J. Genesis of clayey bodies in Quadrilátero Ferrífero, Minas Gerais. Catena, Holanda, v. 55, n.3, p. 277-291, 2004. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0341816203001061>. Acesso em: 18 set. 2014.0341-8162http://www.repositorio.ufop.br/handle/123456789/4010https://doi.org/10.1016/S0341-8162(03)00106-1This work deals with macromorphological, mineralogical, micromorphological and geochemical studies in clayey bodies from Quadrilátero Ferrı́fero in order to define their genesis and formation conditions in this geologic province from Minas Gerais State. Methodologies, based on the description of outcrops and drill cores, using X-ray diffraction (XRD), differential and gravimetric thermal analyses (DTA-TG), scanning electron microscopy (SEM), optical analysis of thin sections and chemical analyses allowed for the definition of two different genetic types of clayey bodies. One type, SET 1, occurs upon saprolitic material from Paleoproterozoic rocks in unconformity contact. It is constituted, from the base to the top, by four facies: nodular, ferruginous kaolinitic, mottled kaolinitic, and massive kaolinitic. The origin of this set is related to the deposition of lateritic materials by gravitational process. The faciological differentiation of this set is related to the syn-depositional process and postdepositional mechanisms of ferruginization and deferruginization. The second type, SET 2, is composed by an ilmenitic–kaolinitic tabular facies in discordant relationships with the saprolite material from Paleoproterozoic rocks. The origin of this second set is related to “in situ” alteration of intrusive rocks of acidic composition.KaoliniteLateritic profileMicromorphologyWeatheringGenesis of clayey bodies in Quadrilátero Ferrífero, Minas Gerais, Brazil.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleO periódico CATENA concede permissão para depósito deste artigo no Repositório Institucional da UFOP. Número da licença: 3474340655934.info:eu-repo/semantics/openAccessengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOPLICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://www.repositorio.ufop.br/bitstream/123456789/4010/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52ORIGINALARTIGO_GenesisClayeyBodies.pdfARTIGO_GenesisClayeyBodies.pdfapplication/pdf646291http://www.repositorio.ufop.br/bitstream/123456789/4010/1/ARTIGO_GenesisClayeyBodies.pdf1d29fc43e83a076092c704e8540ab1c9MD51123456789/40102019-05-13 17:21:53.377oai:localhost: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Repositório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332019-05-13T21:21:53Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false |
dc.title.pt_BR.fl_str_mv |
Genesis of clayey bodies in Quadrilátero Ferrífero, Minas Gerais, Brazil. |
title |
Genesis of clayey bodies in Quadrilátero Ferrífero, Minas Gerais, Brazil. |
spellingShingle |
Genesis of clayey bodies in Quadrilátero Ferrífero, Minas Gerais, Brazil. Santos, Marcelo Cabral Kaolinite Lateritic profile Micromorphology Weathering |
title_short |
Genesis of clayey bodies in Quadrilátero Ferrífero, Minas Gerais, Brazil. |
title_full |
Genesis of clayey bodies in Quadrilátero Ferrífero, Minas Gerais, Brazil. |
title_fullStr |
Genesis of clayey bodies in Quadrilátero Ferrífero, Minas Gerais, Brazil. |
title_full_unstemmed |
Genesis of clayey bodies in Quadrilátero Ferrífero, Minas Gerais, Brazil. |
title_sort |
Genesis of clayey bodies in Quadrilátero Ferrífero, Minas Gerais, Brazil. |
author |
Santos, Marcelo Cabral |
author_facet |
Santos, Marcelo Cabral Varajão, Angélica Fortes Drummond Chicarino Yvon, Jacques |
author_role |
author |
author2 |
Varajão, Angélica Fortes Drummond Chicarino Yvon, Jacques |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Santos, Marcelo Cabral Varajão, Angélica Fortes Drummond Chicarino Yvon, Jacques |
dc.subject.por.fl_str_mv |
Kaolinite Lateritic profile Micromorphology Weathering |
topic |
Kaolinite Lateritic profile Micromorphology Weathering |
description |
This work deals with macromorphological, mineralogical, micromorphological and geochemical studies in clayey bodies from Quadrilátero Ferrı́fero in order to define their genesis and formation conditions in this geologic province from Minas Gerais State. Methodologies, based on the description of outcrops and drill cores, using X-ray diffraction (XRD), differential and gravimetric thermal analyses (DTA-TG), scanning electron microscopy (SEM), optical analysis of thin sections and chemical analyses allowed for the definition of two different genetic types of clayey bodies. One type, SET 1, occurs upon saprolitic material from Paleoproterozoic rocks in unconformity contact. It is constituted, from the base to the top, by four facies: nodular, ferruginous kaolinitic, mottled kaolinitic, and massive kaolinitic. The origin of this set is related to the deposition of lateritic materials by gravitational process. The faciological differentiation of this set is related to the syn-depositional process and postdepositional mechanisms of ferruginization and deferruginization. The second type, SET 2, is composed by an ilmenitic–kaolinitic tabular facies in discordant relationships with the saprolite material from Paleoproterozoic rocks. The origin of this second set is related to “in situ” alteration of intrusive rocks of acidic composition. |
publishDate |
2004 |
dc.date.issued.fl_str_mv |
2004 |
dc.date.accessioned.fl_str_mv |
2014-11-20T16:39:31Z |
dc.date.available.fl_str_mv |
2014-11-20T16:39:31Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
SANTOS, M. C.; VARAJÃO, A. F. D. C.; YVON, J. Genesis of clayey bodies in Quadrilátero Ferrífero, Minas Gerais. Catena, Holanda, v. 55, n.3, p. 277-291, 2004. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0341816203001061>. Acesso em: 18 set. 2014. |
dc.identifier.uri.fl_str_mv |
http://www.repositorio.ufop.br/handle/123456789/4010 |
dc.identifier.issn.none.fl_str_mv |
0341-8162 |
dc.identifier.doi.none.fl_str_mv |
https://doi.org/10.1016/S0341-8162(03)00106-1 |
identifier_str_mv |
SANTOS, M. C.; VARAJÃO, A. F. D. C.; YVON, J. Genesis of clayey bodies in Quadrilátero Ferrífero, Minas Gerais. Catena, Holanda, v. 55, n.3, p. 277-291, 2004. Disponível em: <http://www.sciencedirect.com/science/article/pii/S0341816203001061>. Acesso em: 18 set. 2014. 0341-8162 |
url |
http://www.repositorio.ufop.br/handle/123456789/4010 https://doi.org/10.1016/S0341-8162(03)00106-1 |
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eng |
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eng |
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