Diamondiferous deposits in the Jequitai area (Minas Gerais, Brazil): a consequence of neotectonic processes

Página do item simplificado
dc.contributor.authorPenha, U. C.
dc.contributor.authorKarfunkel, J.
dc.contributor.authorAngeli, N.
dc.contributor.institutionCVRD
dc.contributor.institutionUniversidade Federal de Minas Gerais (UFMG)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2014-05-20T15:30:09Z
dc.date.available2014-05-20T15:30:09Z
dc.date.issued2005-05-01
dc.description.abstractDiamonds obtained from small scale mining near Jequitai and surrounding villages are extracted from Tertiary conglomerates and Quaternary gravels of the Rio Jequitai. Eocretaceous conglomerates, which are locally poorly diamondiferous, cover parts of the Serra da Agua Fria and Serra do Cabral. They are of no economic importance. Analyses of neotectonic, post-Miocene features support a transpressive regime that gave rise to N-S to N25° E transcurrent faults, and WNW normal faults. The main evidence for neotectonic processes are inclined Tertiary sediments, drainage captures, striated laterites of Miocene age, and tilting of blocks that form the Rio Jequitai graben. Diamonds in the Tertiary terraces derived from the Eocretaceous conglomerates, which were affected by neotectonic processes, followed by erosion and concentration during redeposition of sediments.en
dc.description.affiliationCVRD, BR-33010970 Santa Luzia, MG, Brazil
dc.description.affiliationUniv Fed Minas Gerais, Dept Geol, BR-31270901 Belo Horizonte, MG, Brazil
dc.description.affiliationUNESP, BR-13506900 Rio Claro, SP, Brazil
dc.description.affiliationUnespUNESP, BR-13506900 Rio Claro, SP, Brazil
dc.format.extent207-224
dc.identifier.citationNeues Jahrbuch Fur Geologie Und Palaontologie-abhandlungen. Stuttgart: E Schweizerbartsche Verlags, v. 236, n. 1-2, p. 207-224, 2005.
dc.identifier.issn0077-7749
dc.identifier.urihttp://hdl.handle.net/11449/39586
dc.identifier.wosWOS:000229542500011
dc.language.isoeng
dc.publisherE Schweizerbart'sche Verlags
dc.relation.ispartofNeues Jahrbuch Fur Geologie Und Palaontologie-abhandlungen
dc.relation.ispartofjcr0.760
dc.relation.ispartofsjr0,517
dc.rights.accessRightsAcesso restrito
dc.sourceWeb of Science
dc.titleDiamondiferous deposits in the Jequitai area (Minas Gerais, Brazil): a consequence of neotectonic processesen
dc.typeArtigo
dcterms.licensehttp://www.schweizerbart.de/journals/fal/instructions
dcterms.rightsHolderE Schweizerbartsche Verlags

Arquivos

Licença do Pacote
Agora exibindo 1 - 1 de 1
Nenhuma Miniatura disponível
Nome:
license.txt
Tamanho:
1.71 KB
Formato:
Item-specific license agreed upon to submission
Descrição:

Coleções

Artigos