Geofluids / 2021 / Article / Tab 1 / Research Article
Revisiting Controls on Shale Oil Accumulation in Saline Lacustrine Basins: The Permian Lucaogou Formation Mixed Rocks, Junggar Basin Table 1 Classification of lithofacies in the Lucaogou Formation, Jimusar Sag.
Main categories of lithofacies Subcategories and specific types of lithofacies (A) Intrabasinal sedimentary rocks (a) Carbonate rock (1) Obvious laminae: laminated silty dolomite (rarely observed) (2) No obvious laminae but may have obvious algae or biological disturbance: massive dolarenite, massive silty dolomite, massive argillaceous dolomite, massive dolomicrite (commonly observed) (B) Terrigenous elastic rocks Mudstone (b) Dolomitic/calcareous mudstone (3) Obvious laminae: laminated (silt/tuff-bearing) dolomitic/calcareous mudstone (rarely observed) (4) No obvious laminae: massive(silt/tuff-bearing) dolomitic/calcareous mudstone (commonly observed) (c) Tuffaceous/silty mudstone (5) Obvious laminae: laminated (dolomized) tuffaceous/silty mudstone, shale (commonly observed) (6) No obvious laminae: laminated (dolomized) tuffaceous/silty mudstone (rarely observed) (d) Siltstone (7) Obvious laminae: laminated calcareous/dolomitic/tuffaceous/argillaceous siltstone (rarely observed) (8) No obvious laminae: massive calcareous/dolomitic/argillaceous siltstone (commonly observed) (C) Volcanic-sedimentary clastic rocks (e) Tuffaceous rock (rare) (9) Tuffite, tuff, and dolomitic tuff