准噶尔盆地白家海地区侏罗系聚煤作用与层序地层

煤层在层序划分与对比中具有十分重要的参考意义。以准噶尔盆地白家海地区侏罗系为例，通过对该地区几个聚煤时期的碎屑物质的供应程度、古地貌格局、湖平面变化（基准面变化）、气候及古植物等内在与外在因素的分析，并结合侏罗系高分辨率层序地层研究，认为该地区侏罗系煤层受多种因素控制，并主要发育于基准面稳定上升的早期，且与层序的时空演化存在着有机联系。

SEQUENCE STRATIGRAPHY AND MECHANISM OF THE COAL FORMATION IN JURASSIC OF BAIJIAHAI AREA IN JUNGGAR BASIN

Coal bed plays a reference role in sequence division and correlation.Taking Jurassic Formation of Baijiahai area in Junggar basin as an example,we analyze some inner and outer factors in stages of the Coal Formation such as degree of supply of clastic substance,configuration of paleogeomorphy,change of lake level(change of base level),climate and paleophyton,and study Jurassic high-resolution sequence stratigraphy.We think that coal beds in this area were controlled by many factors,developed in early and late stage of long-term rise of base level and they were organically related to temporal and spatial evolution of sequences.