Produção Nacional
Estudos sedimentologicos da formacao areado, cretaceo da bacia sanfranciscana, MG
1981; Sociedade Brasileira de Geologia; Volume: 11; Issue: 4 Linguagem: Inglês
10.5327/rbg.v11i4.234
ISSN2317-4889
AutoresJosé Humberto Barcelos, Kenitiro Suguío,
Tópico(s)Geography and Environmental Studies
ResumoSedimentological studies involving grain size, heavy mineral and clay mineral analysis were carried on sample from Areado Formation. Lithologically, this formations is constituted by fine-to-very-fine and silty sandstones, rarely conglomeratic. They are mineralogically immature and the heavy mineral assemblage is formed of staurolite, epidote, kyanite and garnet, whose source rocks belong to Araxa, Canastra and Bambui Groups and Botucatu Formation. These sediments have been deposited by a fluvial system which changed between changed meandering pelitic to psamitic as a function of climate during their sedimentation.
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