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白云岩占地壳沉积岩体积的20%,是碳酸盐岩地层中最主要的油气储渗体,对它的研究有着非常重要的意义。白云岩成因是碳酸盐岩岩石学中最复杂、争论时间最久、最难解决的问题之一。根据成因阶段和机理的不同,当前各种主要的白云岩可分为四个类型:原生白云石、同生白云岩、成岩白云岩和后生白云岩。就目前的研究趋势来看,仅依靠单一的学科和技术来研究白云岩的成因常具有一定的局限性,除了沉积学、岩相学和地球化学的综合研究外,还要引进其他的分析手段,通过古地磁分析并结合岩石地球化学资料来确定白云石化时期不失为一种新的研究思路。原子力显微镜(AFM)的应用希望能够另辟蹊径以探讨白云岩的成因。相信人们对白云岩成因问题及其相关认识的研究定会继续深入下去并将取得更大的进展。
Dolomite accounts for 20% of the volume of the crustal sedimentary rocks, which is the most important hydrocarbon reservoir in the carbonate rock formations. It is of great significance to its study. The cause of dolomite is one of the most complex and arguable problems in carbonate petrology. According to the genetic stage and mechanism, the current major dolomites can be divided into four types: primary dolomite, syngenetic dolomite, diagenetic dolomite and epigenetic dolomite. According to the current trend of research, it is often limited to study the genesis of dolomite by relying solely on a single discipline and technology. In addition to comprehensive studies on sedimentology, petrography and geochemistry, other analytical methods should be introduced It is a new research idea to determine dolomitization period through paleomagnetic analysis combined with lithogeochemical data. The application of atomic force microscope (AFM) hope to find another way to explore the cause of dolomite. It is believed that people’s research on the causes of dolomite formation and its related knowledge will continue to go deeper and will make greater progress.