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A screening by direct desulphurization of extracts was employed for 21 immature, organic sulphur-rich marl samples from 10 of the 14 evaporite cycles in an Italian Messinian evaporitic basin (Vena del Gesso, Gessoso-solfifera Fm.). The combined information retrieved from free and sulphur-bound carbon skeletons enabled a detailed palaeoenvironmental reconstruction. The biomarker compositions...
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