石油勘探与开发2026，Vol.53Issue(1)：52-66,15.DOI:10.11698/PED.20250561
细粒沉积岩分类及有关术语评述
Review of the classification and related terminology of fine-grained sedimentary rocks
摘要
Abstract
Through tracing the background and customary usage of classification of fine-grained sedimentary rocks and terminology,and comparing current"sedimentary petrology"textbooks and monographs,this paper proposes a classification scheme for fine-grained sedimentary rocks and clarifies related terminology.The comprehensive analysis indicates that the classification of clastic rocks,volcanic clastic rocks,chemical rocks,and biogenic(carbonate)rocks is unified,and the definitions of terms such as lamination,bedding and beds are consistent.However,there is a disagreement on the definition of"mud".European and American scholars commonly use the term"mud"to include silt and clay(particle size less than 0.062 5 mm).Chinese scholars equate the term"mud"to"clay"(particle size less than 0.003 9 mm or less than 0.01 mm).Combined with the discussion on terms such as sedimentary structures(bedding,lamination and lamellation),shale,mudstone,mudrocks/argillaceous rocks and mud shale,it is recommended to use"fine-grained sedimentary rocks"as the general term for all sedimentary rocks composed of fine-grained materials with particle size less than 0.062 5 mm,including claystone/mudrocks and siltstone.Claystone/mudrocks are further classified into argillaceous(or clayey)mudstone/shale,calcareous mudstone/shale,siliceous mudstone/shale,silty mudstone/shale and silt-containing mudstone/shale.Argillaceous(or clayey)mudstone/shale emphasizes a content of clay minerals or clay-sized particles exceeding 50％.Other mudstones/shales emphasize a content of particles(particle size less than 0.062 5 mm)exceeding 50％.The commonly referred term"shale"should not include siltstone.It is necessary to establish a reasonable,standardized,and applicable classification scheme for fine-grained sedimentary rocks in the future.An integrated shale microfacies research at the thin-section scale should be carried out,and combined with well logging data interpretation and seismic attribute analysis,a geological model of lithology/lithofacies will be iteratively upgraded to accurately determine sweet layer,locate target layer,and evaluate favorable area.关键词
细粒沉积岩/页岩/泥岩/黏土/页岩油/页岩气/页理/页岩微相/分类方案/细粒沉积学Key words
fine-grained sedimentary rock/shale/mudstone/clay/shale oil/shale gas/lamellation/shale microfacies/classification scheme/fine-grained sedimentology分类
能源科技引用本文复制引用
朱如凯,孙龙德,邹才能,陈扬,缪雪..细粒沉积岩分类及有关术语评述[J].石油勘探与开发,2026,53(1):52-66,15.基金项目
国家自然科学基金企业创新发展联合基金集成项目"中高熟陆相页岩油富集理论与绿色有效开发基础研究"(U24B6004) （U24B6004）
