太原西山煤田主要砂体的粒度分布特征及沉积环境
GRAIN-S亿E DISTRIBUTION CHARACTERISTICS AND SEDIMENTARY ENVIRONMENTS OF THE MAJOR SANDBODIES IN THE XISHAN COAL FIELD IN TAIYUAN
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摘要: 概述太原西山煤田是华北石炭-二叠纪含煤沉积的典型剖面所在地。近年来,许多单位和个人在西山煤田作了大量的岩相古地理研究工作,但是,粒度研究尚无先例。笔者在参加太原西山煤田成煤环境的研究中,选择含煤岩系的主要砂体进行了粒度分析,对这些矿体的形成条件得到了进一步的认识。由于研究区内岩、煤层出露较好,可利用的成因标志较多,成煤环境研究采用了大面积、多手段、综合分析的方法,所以,不仅粒度研究结果对环境的综合分析进行了修正和补充,而且对粒度分析方法也进行了一次全面检验。Abstract: The Xishan Coal Field is the seat of the Permo一Carboniferous stratotype in N orth China. Many geologists think highly o`f it. The author has systematically studied about 300 grain-size samples of its major sandbodies by using the thin-section met- hod.The result of his study has proved that the sedimentary environments of the sandbodies are conformable with those made by other identification methods. And so the grain一size analyses are convincing.
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[1] 成都地质学院陕北科研队，1978,沉积物(岩)粒度分析及其应用，地质出版社。 [2] 刘宝粱主编，1980，沉积岩石学，地质出版社。 [3] Glaister, R.P.et al.，1974, Grain一size distribution, an aid in facies identication, Bull. Canadian Petroleum Geol.，22. [4] Visher, G.S.，1969, Grain size distributions and depositio'nal proc- asses, J.Sediment. Petrol.，39. -
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