Porphyry or Not Porphyry: That´s Not The Only Question

Detalhes bibliográficos
Autor(a) principal: TEIXEIRA, Noevaldo Araújo
Data de Publicação: 2015
Outros Autores: CAMPOS, Leandro Duarte, CARVALHO, Marco Túlio Naves de, CUNHA, Lys Matos
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional de Geociências - RIGEO
Texto Completo: https://rigeo.cprm.gov.br/handle/doc/15234
Resumo: Tapajós (PA) and Alta Floresta (MT) gold areas form one large (1,900 km long and 280 km wide) Paleoproterozoic gold province named Tapajós – Alta Floresta Gold Province (TAFGP). Gold deposits from the TAFPG are divided into two major groups: (1) Epithermal and pluton-related high grade quartz vein deposits ±(Zn-Pb-Cu-Fe) with restricted sericite, chorite and carbonate alteration; and (2) Low grade disseminated deposits ±(Ag-Bi-Te-Pb-Zn) with “phyllic” fault-controlled alteration (muscovite-quartz-pyrite) and strong to moderate silicification. Early k-feldspar alteration is pervasive and not related to gold grades. TAFGP deposits are not porphyry-type or intrusion related strictu sensu gold deposits. Additionally, TAFGP gold deposits are not related to subdution zones. Seismic thomography revealed that the TAFGP sits over a rifted SCLM keel (Amazon archean craton). TAFGP gold deposits represent a new type of gold mineralization related to intracratonic A-type volcanic-subvolcanic-plutonic system generated by large underplate-plume
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spelling TEIXEIRA, Noevaldo AraújoCAMPOS, Leandro DuarteCARVALHO, Marco Túlio Naves deCUNHA, Lys Matos2015-12-28T17:15:37Z2015-12-28T17:15:37Z2015TEIXEIRA, Noevaldo Araújo et al. Porphyry or Not Porphyry: That´s Not The Only Question. In: SIMPOSIO DE GEOLOGIA DA AMAZONIA, 14., 27 set.-1 out. 2015, Marabá. [Anais] .... Marabá: SBG, 2015. Tema: Recursos minerais da Amazônia e suas implicações socioeconômicas.https://rigeo.cprm.gov.br/handle/doc/15234Tapajós (PA) and Alta Floresta (MT) gold areas form one large (1,900 km long and 280 km wide) Paleoproterozoic gold province named Tapajós – Alta Floresta Gold Province (TAFGP). Gold deposits from the TAFPG are divided into two major groups: (1) Epithermal and pluton-related high grade quartz vein deposits ±(Zn-Pb-Cu-Fe) with restricted sericite, chorite and carbonate alteration; and (2) Low grade disseminated deposits ±(Ag-Bi-Te-Pb-Zn) with “phyllic” fault-controlled alteration (muscovite-quartz-pyrite) and strong to moderate silicification. Early k-feldspar alteration is pervasive and not related to gold grades. TAFGP deposits are not porphyry-type or intrusion related strictu sensu gold deposits. Additionally, TAFGP gold deposits are not related to subdution zones. Seismic thomography revealed that the TAFGP sits over a rifted SCLM keel (Amazon archean craton). TAFGP gold deposits represent a new type of gold mineralization related to intracratonic A-type volcanic-subvolcanic-plutonic system generated by large underplate-plumeSBGRECURSOS MINERAISOUROBRASILAMAZONASTAPAJOSPorphyry or Not Porphyry: That´s Not The Only Questioninfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleMarabá, PAinfo:eu-repo/semantics/openAccessporreponame:Repositório Institucional de Geociências - RIGEOinstname:Companhia de Pesquisa de Recursos Minerais (CPRM)instacron:CPRMTEXTAR-Eventos_TEIXEIRA_2.pdf.txtAR-Eventos_TEIXEIRA_2.pdf.txtExtracted texttext/plain12614http://rigeo.sgb.gov.br/jspui/bitstream/doc/15234/3/AR-Eventos_TEIXEIRA_2.pdf.txt1911858f017458abdfe2d55f646587ceMD53THUMBNAILAR-Eventos_TEIXEIRA_2.pdf.jpgAR-Eventos_TEIXEIRA_2.pdf.jpgGenerated Thumbnailimage/jpeg1713http://rigeo.sgb.gov.br/jspui/bitstream/doc/15234/4/AR-Eventos_TEIXEIRA_2.pdf.jpg6d16553534d33a695426352ac8a45718MD54ORIGINALAR-Eventos_TEIXEIRA_2.pdfAR-Eventos_TEIXEIRA_2.pdfproducao cientificaapplication/pdf387520http://rigeo.sgb.gov.br/jspui/bitstream/doc/15234/1/AR-Eventos_TEIXEIRA_2.pdf5f7e72ca47f6a33dc83a0924c34e13fdMD51LICENSElicense.txtlicense.txttext/plain; charset=utf-81748http://rigeo.sgb.gov.br/jspui/bitstream/doc/15234/2/license.txt8a4605be74aa9ea9d79846c1fba20a33MD52doc/152342023-10-31 09:01:40.112oai:rigeo.sgb.gov.br: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Repositório InstitucionalONGhttps://rigeo.sgb.gov.br/oai/request https://rigeo.cprm.gov.br/oai/requestrigeo@sgb.gov.bropendoar:2023-10-31T12:01:40Repositório Institucional de Geociências - RIGEO - Companhia de Pesquisa de Recursos Minerais (CPRM)false
dc.title.pt_BR.fl_str_mv Porphyry or Not Porphyry: That´s Not The Only Question
title Porphyry or Not Porphyry: That´s Not The Only Question
spellingShingle Porphyry or Not Porphyry: That´s Not The Only Question
TEIXEIRA, Noevaldo Araújo
RECURSOS MINERAIS
OURO
BRASIL
AMAZONAS
TAPAJOS
title_short Porphyry or Not Porphyry: That´s Not The Only Question
title_full Porphyry or Not Porphyry: That´s Not The Only Question
title_fullStr Porphyry or Not Porphyry: That´s Not The Only Question
title_full_unstemmed Porphyry or Not Porphyry: That´s Not The Only Question
title_sort Porphyry or Not Porphyry: That´s Not The Only Question
author TEIXEIRA, Noevaldo Araújo
author_facet TEIXEIRA, Noevaldo Araújo
CAMPOS, Leandro Duarte
CARVALHO, Marco Túlio Naves de
CUNHA, Lys Matos
author_role author
author2 CAMPOS, Leandro Duarte
CARVALHO, Marco Túlio Naves de
CUNHA, Lys Matos
author2_role author
author
author
dc.contributor.author.fl_str_mv TEIXEIRA, Noevaldo Araújo
CAMPOS, Leandro Duarte
CARVALHO, Marco Túlio Naves de
CUNHA, Lys Matos
dc.subject.por.fl_str_mv RECURSOS MINERAIS
OURO
BRASIL
AMAZONAS
TAPAJOS
topic RECURSOS MINERAIS
OURO
BRASIL
AMAZONAS
TAPAJOS
description Tapajós (PA) and Alta Floresta (MT) gold areas form one large (1,900 km long and 280 km wide) Paleoproterozoic gold province named Tapajós – Alta Floresta Gold Province (TAFGP). Gold deposits from the TAFPG are divided into two major groups: (1) Epithermal and pluton-related high grade quartz vein deposits ±(Zn-Pb-Cu-Fe) with restricted sericite, chorite and carbonate alteration; and (2) Low grade disseminated deposits ±(Ag-Bi-Te-Pb-Zn) with “phyllic” fault-controlled alteration (muscovite-quartz-pyrite) and strong to moderate silicification. Early k-feldspar alteration is pervasive and not related to gold grades. TAFGP deposits are not porphyry-type or intrusion related strictu sensu gold deposits. Additionally, TAFGP gold deposits are not related to subdution zones. Seismic thomography revealed that the TAFGP sits over a rifted SCLM keel (Amazon archean craton). TAFGP gold deposits represent a new type of gold mineralization related to intracratonic A-type volcanic-subvolcanic-plutonic system generated by large underplate-plume
publishDate 2015
dc.date.accessioned.fl_str_mv 2015-12-28T17:15:37Z
dc.date.available.fl_str_mv 2015-12-28T17:15:37Z
dc.date.issued.fl_str_mv 2015
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
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status_str publishedVersion
dc.identifier.citation.fl_str_mv TEIXEIRA, Noevaldo Araújo et al. Porphyry or Not Porphyry: That´s Not The Only Question. In: SIMPOSIO DE GEOLOGIA DA AMAZONIA, 14., 27 set.-1 out. 2015, Marabá. [Anais] .... Marabá: SBG, 2015. Tema: Recursos minerais da Amazônia e suas implicações socioeconômicas.
dc.identifier.uri.fl_str_mv https://rigeo.cprm.gov.br/handle/doc/15234
identifier_str_mv TEIXEIRA, Noevaldo Araújo et al. Porphyry or Not Porphyry: That´s Not The Only Question. In: SIMPOSIO DE GEOLOGIA DA AMAZONIA, 14., 27 set.-1 out. 2015, Marabá. [Anais] .... Marabá: SBG, 2015. Tema: Recursos minerais da Amazônia e suas implicações socioeconômicas.
url https://rigeo.cprm.gov.br/handle/doc/15234
dc.language.iso.fl_str_mv por
language por
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dc.publisher.none.fl_str_mv SBG
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instname:Companhia de Pesquisa de Recursos Minerais (CPRM)
instacron:CPRM
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reponame_str Repositório Institucional de Geociências - RIGEO
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