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

被引：0
|
作者：
Peng J. [1 ,2 ]
Zeng Y. [1 ,2 ]
Yang Y. [1 ,2 ]
Yu L. [1 ,2 ]
Xu T. [1 ,2 ]
机构：
[1] School of Geoscience and Technology, Southwest Petroleum University, Chengdu
[2] Natural Gas Geology Key Laboratory of Sichuan Province, Southwest Petroleum University, Chengdu
来源：
Shiyou Kantan Yu Kaifa/Petroleum Exploration and Development | 2022年 / 49卷 / 01期
关键词：
Fine-grained sedimentary rock; Mineral composition; Particle size; Rock classification; Three-level nomenclature;
D O I：
10.11698/PED.2022.01.09
中图分类号：
学科分类号：
摘要：
Based on reviews and summaries of the naming schemes of fine-grained sedimentary rocks, and analysis of characteristics of fine-grained sedimentary rocks, the problems existing in the classification and naming of fine-grained sedimentary rocks are discussed. On this basis, following the principle of three-level nomenclature, a new scheme of rock classification and naming for fine-grained sedimentary rocks is determined from two perspectives: First, fine-grained sedimentary rocks are divided into 12 types in two major categories, mudstone and siltstone, according to particle size (sand, silt and mud). Second, fine-grained sedimentary rocks are divided into 18 types in four categories, carbonate rock, fine-grained felsic sedimentary rock, clay rock and mixed fine-grained sedimentary rock according to mineral composition (carbonate minerals, felsic detrital minerals and clay minerals as three end elements). Considering the importance of organic matter in unconventional oil and gas generation and evaluation, organic matter is taken as the fourth element in the scheme. Taking the organic matter contents of 0.5% and 2% as dividing points, fine grained sedimentary rocks are divided into three categories, organic-poor, organic-bearing, and organic-rich ones. The new scheme meets the requirement of unconventional oil and gas exploration and development today and solves the problem of conceptual confusion in fine-grained sedimentary rocks, providing a unified basic term system for the research of fine-grained sedimentology. © 2022, The Editorial Board of Petroleum Exploration and Development. All right reserved.
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页码：106 / 115
页数：9
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共 51 条
  • [11] WANG Yong, WANG Xuejun, SONG Guoqi, Et al., Genetic connection between mud shale lithofacies and shale oil enrichment in Jiyang depression, Bohai Bay Basin, Petroleum Exploration and Development, 43, 5, pp. 696-704, (2016)
  • [12] LOUCKS R G, RUPPEL S C., Mississippian Barnett shale: litho-facies and depositional setting of a deep-water shale-gas succession in the Fort Worth Basin, Texas, AAPG Bulletin, 91, 4, pp. 579-601, (2007)
  • [13] ALEXANDRE J T, DIRKX R, VELD H, Et al., Toarcian black shales in the Dutch Central Graben: Record of energetic, variable depositional conditions during an oceanic anoxic event, Journal of Sedimentary Research, 82, 2, pp. 104-120, (2012)
  • [14] WANG Guanmin, Laminae combination and genetic classification of Eogene shale in Jiyang Depression, Journal of Jilin University (Earth Science Edition), 42, 3, pp. 666-671, (2012)
  • [15] LAZAR O R, BOHACS K M, JOE H S, Et al., Capturing key attributes of fine-grained sedimentary rocks in outcrops, cores, and thin sections: Nomenclature and description guidelines, Journal of Sedimentary Research, 85, 3, pp. 230-246, (2015)
  • [16] RAN Bo, LIU Shugen, SUN Wei, Et al., Lithofacies classification of shales of the Lower Paleozoic Wufeng-Longmaxi Formation in the Sichuan Basin and its surrounding areas, China, Earth Science Frontiers, 23, 2, pp. 96-107, (2016)
  • [17] ZHANG Shaomin, CAO Yingchang, ZHU Rukai, Et al., Lithofacies classification of fine-grained mixed sedimentary rocks in the Permian Lucaogou Formation, Jimsar Sag, Junggar Basin, Earth Science Frontiers, 25, 4, pp. 198-209, (2018)
  • [18] LIANG C, WU J, JIANG Z X, Et al., Sedimentary environmental controls on petrology and organic matter accumulation in the upper fourth member of the Shahejie Formation (Paleogene, Dongying Depression, Bohai Bay Basin, China), International Journal of Coal Geology, 186, pp. 1-13, (2018)
  • [19] LI Zengxue, SONG Mingshui, LI Ying, Et al., Petrographic classification of lacustrine fine-grained rocks using a two-level index division method and a case study of its application, Geoscience, 35, 2, pp. 365-377, (2021)
  • [20] ZHANG Jianguo, JIANG Zaixing, LIU Li'an, Et al., Lithofacies and depositional evolution of fine-grained sedimentary rocks in the lower submember of the Member 3 of Shahejie Formation in Zhanhua Sag, Bohai Bay Basin, Acta Petrolei Sinica, 42, 3, pp. 293-306, (2021)
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