摘要:
泥盆系地层在贵州分布广泛,发育完整,厚度大,沉积相变急剧。前人以地层划分对比为主要课题,对泥盆系作了大量工作。在此基础上,我们近年的研究着重于沉积相古地理,分析泥盆纪各世、期沉积相带的展布及其与油气的关系,寻找有利于油气生成与储集的相带。本文主要探讨中、上泥盆统碳酸盐岩的沉积环境。其依据是73年以来研测的地表岩相剖面20余条、四口石油深井的岩芯、岩屑资料及岩石薄片、光面4000余件。
Abstract:
The ancient Devonian sea area in Guizhou province belongs toepicontinen-tal sea in character, and the carbonate deposits are well-developed. Based on the rock texture, sedim entary structure, biological rise m blages and ecology as well as facies minerals, in energy and tidal action, and the light of paleogeographical position, sea一water reference to the patterns of Irwin(1965)， Laporte(1967)and Wilson(1975)， the general pattern of its sedicnentary en vi-ronment consists of three facies regions, sie facies belts and thirteen facies.T he littoral facies region comprises facies region includes platform supratidal belt and intertidal belt,subshallow sea facics belt and platform consists of basin marginal facies and abyssal and shallo w -sea facies region continental shore facies belt. fades belt and belt, open
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