华南泥盆纪层序地层系、统、阶界线的建立与生物地层、年代地层界线的对比

THE EVOLUTION OF THE PRE BLACK SEA AREA BASIN OF THE TETHYS NORTHERN MARGIN IN PALEOGENE AND OIL AND GAS PERSPECTIVES

本文以ＥＸＸＯＮ公司Ｐ．Ｒ．Ｖａｉｌ等人创立的层序地层学理论为准，对华南泥盆系的层序地层进行了区域上的研究、分析、对比。研究结果表明，从下泥盆统的洛赫科夫阶至上泥盆统的法门阶可识别出２０～２１个Ⅲ级层序。华南泥盆系的岩石地层、生物地层、年代地层的系、统、阶界线均已确定，与层序地层研究结果对比，生物地层界线均比相应的层序地层界线滞后。本文试图以层序地层序列为准，建立一新的地层系统作为相应的生物地层、年代地层的系、统、阶相对应的辅助性地层系统。研究结果表明，在岩石地层、生物地层、年代地层研究程度高的地区，可建立层序地层的系、统、阶界线系统以利于野外作业。华南地区的泥盆系内，除弗拉斯阶与法门阶的阶间界线置于饥饿层（ｓｔａｒｖｅｄｓｅｃｔｉｏｎ）外，其他的阶、统、系界线均位于有关阶（统）顶部层序中的ＨＳＴ的顶面。

The results of studying the histoy of geological development of the Pre Black Sea Area basin of the Tethys northern margin are given.It is concluded that the rivers drifting detrital material from the northern mainland were of main importance in sedimentation.Oil and gas perspectives is connected with the zones of influence of paleo rivers fans where clinoform of psammitic collectors take place.It is confirmed by the discovery of a number of fields belonging to the paleo Don Kuban and paleo Danube Dnieper avantdeltas.