Record details

Title
    Geochemistry of the Batatal Formation, Gongo Soco, Quadrilátero Ferrífero of Minas Gerais, Brazil
Author
    Cabral, Alexandre
    Lehmann, B.
    Nagler, T.
    Pašava, Jan
    Seabra Gomes, A.A.
    Voegelin, A.
Language
    anglicky
Publication type
    článek ve sborníku
Source title - monograph
    Let's talk ore deposits.Proceedings of the 11th SGA Biennial Meeting, Antofagasta, Chile, 26-29 September 2011
Pages
    3
Notes
    Akce: 2011 ; Antofagasta
Thesaurus term
    Batatal Formation, geochemistry, Mo isotopes, Quadrilátero Ferrífero, Minas Gerais
Keyword
    Batatal
    Brazil
    Ferrífero
    Formation
    Geochemistry
    Gerais
    Gongo
    Minas
    Quadrilátero
    Soco
Abstract (in english)
   Here we present reconnaissance geochemical data from the Batatal Formation, Quadrilátero Ferrífero of Minas Gerais, Brazil. The Batatal Formation is a pelitic carbonaceous sequence that grades upward into the banded iron formation (itabirite) of the Palaeoproterozoic Caue Formation. Our data indicate that the Batatal sediments accumulated some Mo in an Fe-rich basin under anoxic conditions with frequent euxinic periods. Measurements for Mo-isotopic compositions gave heavy ?98/95Mo values (1.27-1.43?), which are comparable to those from the ~2.5-Ga Mt. McRae Shale, Hamersley Basin, Western Australia.
Contributor
    Česká geologická služba
Contributor code
    ČGS (RIV)
Source format
    R
Import date
    15. 10. 2014