GEOLOGICAL SETTING OF CAJAMAR-JORDANÉSIA, SP

ESTRUTURA GEOLÓGICA DA REGIÃO DE CAJAMAR-JORDANÉSIA, SP

dc.contributoren-US
dc.contributorpt-BR
dc.creatorSANTORO, EDGARD
dc.creatorCARNEIRO, CELSO DAL RÉ
dc.creatorOLIVEIRA, MÍRIAN CRUXEN B. DE
dc.creatorHACHIRO, JORGE
dc.date2017-08-02
dc.date.accessioned2022-12-15T20:36:08Z
dc.date.available2022-12-15T20:36:08Z
dc.identifierhttps://ppegeo.igc.usp.br/index.php/rbg/article/view/11445
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/5361612
dc.descriptionThe geological mapping of the Cajamar-Jordanésia region (São Paulo State) is outlined in five lithological units belonging to the São Roque Group (Upper Proterozoic). Geological, structural, and stratigraphical features support the setting. The structural trend of those units is ENE, with increasing metamorphic grade southwards . Slate and meta-arenite occur at the northern portion of the area and schists at the southern. The basal units are composed by micaschists and some porfiroblastic staurolite schists. The micaschists are in gradual contact with phyllites. Small bodies of amphibolites are found in the metapelites. The intermediate level of the lithological column is constituted by a carbonatic layer with few metapelitic inclusions. The top level is formed by metapsamit es with frequent metapelitic intercalations . Three generations of folds have been recognized. The second one is impressive in any scale of analysis. It is also associated to a zonal crenulation cleavage on metapelites and responsible for the general structure outline of rocks bodies at regional scale. This paper makes reference to the soil collapses which took place in August 1986, in Cajamar town. Those collapses were related to the karstic evolution of the studied area.en-US
dc.descriptionThe geological mapping of the Cajamar-Jordanésia region (São Paulo State) is outlined in five lithological units belonging to the São Roque Group (Upper Proterozoic). Geological, structural, and stratigraphical features support the setting. The structural trend of those units is ENE, with increasing metamorphic grade southwards . Slate and meta-arenite occur at the northern portion of the area and schists at the southern. The basal units are composed by micaschists and some porfiroblastic staurolite schists. The micaschists are in gradual contact with phyllites. Small bodies of amphibolites are found in the metapelites. The intermediate level of the lithological column is constituted by a carbonatic layer with few metapelitic inclusions. The top level is formed by metapsamit es with frequent metapelitic intercalations . Three generations of folds have been recognized. The second one is impressive in any scale of analysis. It is also associated to a zonal crenulation cleavage on metapelites and responsible for the general structure outline of rocks bodies at regional scale. This paper makes reference to the soil collapses which took place in August 1986, in Cajamar town. Those collapses were related to the karstic evolution of the studied area.pt-BR
dc.formatapplication/pdf
dc.languagepor
dc.publisherSociedade Brasileira de Geologiapt-BR
dc.relationhttps://ppegeo.igc.usp.br/index.php/rbg/article/view/11445/10899
dc.rightsDireitos autorais 2017 Revista Brasileira de Geociênciaspt-BR
dc.sourceRevista Brasileira de Geociências; v. 18, n. 3 (1988); 353-361en-US
dc.sourceRevista Brasileira de Geociências; v. 18, n. 3 (1988); 353-361es-ES
dc.sourceRevista Brasileira de Geociências; v. 18, n. 3 (1988); 353-361pt-BR
dc.source0375-7536
dc.subjecten-US
dc.subjectpt-BR
dc.titleGEOLOGICAL SETTING OF CAJAMAR-JORDANÉSIA, SPen-US
dc.titleESTRUTURA GEOLÓGICA DA REGIÃO DE CAJAMAR-JORDANÉSIA, SPpt-BR
dc.typeinfo:eu-repo/semantics/article
dc.typeinfo:eu-repo/semantics/publishedVersion
dc.typept-BR


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