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Abstract Despite having made significant contributions to global hydrocarbon occurrences, source rocks in saline lacustrine basins show great mineralogical and organic geochemical heterogeneity and the controlling mechanism is weakly studied.… Click to show full abstract
Abstract Despite having made significant contributions to global hydrocarbon occurrences, source rocks in saline lacustrine basins show great mineralogical and organic geochemical heterogeneity and the controlling mechanism is weakly studied. Here, we use the Cenozoic Qaidam Basin as an example to compare the organic and inorganic parameters of fine-grained sediments in different lacustrine facies and to figure out the characterization and distribution of effective petroleum source rocks in saline lacustrine systems. Organic-inorganic database of six selected boreholes show that in the bench-margin (high-gradient) lacustrine system, fine-grained sediments in sublittoral brackish-mesosaline zones containing low chlorides (
Journal Title: Marine and Petroleum Geology
Year Published: 2020
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