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The Neoproterozoic carbonate sequence on the southeastern border of the Amazon Craton is divided into three lithostratigraphic units: a basal cap dolomite, an intermediate limestone, limestone-mudstone unit, and an upper dolarenite-dolorudite unit. Sections of the cap-carbonate were measured from the inner shelf to the outer shelf. Carbon isotope ratios (relative to PDB) vary between −10.5 and −1...
The Neoproterozoic Paraguay Belt, located along the southeastern border of the Amazon Craton and eastern border of the Rio Apa Block, comprises a thick passive margin succession of glaciomarine turbidites, carbonates and siliciclastic sedimentary rocks that were deformed during the Brasiliano/Pan-African Orogeny. The carbonate sequence comprises a 1300m thick succession of platformal carbonate rocks...
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