Discussion on classification and naming scheme of fine-grained sedimentary rocks

PENG Jun,ZENG Yao,YANG Yiming,YU Ledan,XU Tianyu

Table 1 Classification and nomenclature schemes of fine-grained sedimentary rocks in China and abroad

Scholars Year Study object Classification basis Classification result References Loucks et al. 2007 Fort Worth Basin Mineral composition, biological characteristics Laminar siliceous mudstone, laminar clay-bearing limy mudstone, framework clay-bearing limy mudstone [12] Alexandre et al. 2012 Jurassic in the Dutch Central Graben Sedimentary structures, types of laminae Bioturbation silty mudstone, thin-layered mudstone, wavy laminated mudstone, thin-layered wavy laminated mudstone [13] Wang 2012 Paleogene in Jiyang Depression Lamina type 7 types, including black shale, limestone, mud shale, etc. [14] Jiang et al. 2013 Lacustrine fine-grained sedimentary rocks Organic matter, mineral components Siltstone, claystone, carbonate rock and hybrid fine-grained sedimentary rock [1] Yan et al. 2015 The Paleogene Kong 2 Member in Cangdong Sag Special mineral component analcime Analcime-containing dolomite fine-grained felsic sedimentary rock, analcime-containing dolomite, analcime-containing dolomite fine-grained hybrid sedimentary rock, etc. [7] Lazar et al. 2015 Cenomanian-Turonian Eagle Ford Shale of south Texas Particle size, components, genesis Fine-grained mudstone, medium-grained mudstone and coarse-grained mudstone; calcareous mudstone, siliceous mudstone, clayey mudstone [15] Ran et al. 2016 Ordovician Wufeng-Silurian Longmaxi Formation in Sichuan Basin Quartz content and laminar morphology Silicon-rich unparalleled laminar shale, medium- silicon inconspicuous laminar shale, etc. [16] Zhang et al. 2018 Permian Lucaogou Formation in Jimusaer Sag Mineral composition, genesis, volcanic debris Endogenous sedimentary rock, pyroclastic sedimentary rock, terrigenous clastic rock and hybrid rock [17] Liang et al. 2018 Upper Sub-member of Paleogene Shahejie Formation in the Bohai Bay Basin Mineral components, organic matter Oil shale, organic-rich calcareous shale, carbonate- bearing silty shale, organic-lean anhydrite shale [18] Li et al. 2021 Paleogene Shahejie Formation in the Dongying Sag Mineral components, organic matter, layer type Horizontal organic matter laminar mudstone, convoluted laminated dolomitic mudstone, massive bauxite mudstone, softly-deformed organic matter laminar argillaceous limestone [19] Li et al. 2020 Kong 2 Member in Cangdong Sag Sedimentary structure, special minerals Massive analcime lime dolomite fine-grained sedimentary rock, laminar analcite felsic fine-grained sedimentary rock, massive uniform fine-grained sedimentary rock [4] Zhang et al. 2021 Lower sub-member of the third member of Paleogene Shahejie Formation in Zhanhua Sag, Bohai Bay Basin Sedimentary structure, genetic mechanism Algal limestone, laminar marl, laminar recrystallized limestone, laminar limy mudstone and massive limy mudstone [20]