Abstract:Evidences obtained of increased salinity, silt+clay particle size fraction, total sulfur, dinosterol and smaller amounts of geochemical biomarkers of terrestrial sources indicate the predominance of marine environment, when the relative sea level was higher than the current level. There was a period of transition from marine to freshwater environment, characterized by the reduction of organic carbon and an increment in the amount of sand and biomarkers of terrestrial sources. After this period, the freshwater … Show more
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