中国地质Issue(1)：306-318,13.
微生物碳酸盐岩沉积特征研究--以四川盆地高磨地区灯影组为例
A study of sedimentary characteristics of microbial carbonate:A case study of the Sinian Dengying Formation in Gaomo area, Sichuan basin
摘要
Abstract
Z2dn of Sichuan basin belongs to the last set of Neoproterozoic strata,and it is also the first sedimentary cover for Sichuan. The main lithology is the pure dolomite in light color,which underwent a complicated diagenesis,so its depositional environment is a topic of much controversy. Based on the field section in the periphery of the basin, drilling core, well logging data and analysis of analytical data,guided by petrology, sedimentology and petroleum geology theory, and combined with the modern stromatolites sedimentary characteristics, the authors analyzed characteristics of petrology, sedimentary environment of Dengying Formation. Some conclusions have been reached:①The rocks of Dengying Formation can be divided into 3 types and 12 subtypes. Poor algal section is mainly composed of dolomicrite,clotted dolomite and grained dolostone,mostly occurring at the early-middle stage of a complete sedimentary cycle. Rich alga section is mainly composed of straticulate dolostone,laminated dolomite and foam dolomite,mostly occurring at the middle-late stage of a complete sedimentary cycle.②The sedimentary facies of Z2dn of Sichuan basin is mainly shallow-water restricted platform facies,and it can be subdivided into 4 subfacies,i.e., algal mound, grain beach, flat and lagoon. The sedimentary facies of the study area is mainly algal mound,and the algal mound may be further subdivided into base, core, cap 3 microfacies.③Comprehensive analysis shows that the high quality reservoirs is obviously controlled by facies. In platform,the reservoirs of grained beach and algal mound, especially the composite body of"mound and beach complex",are of the best physical property,and gas exploration of Z2dn should be carried out around the microbolite in Sichuan basin.关键词
微生物岩/沉积特征/四川盆地/震旦系/灯影组Key words
microbolite/sedimentary characteristics/Sichuan basin/Sinian/Dengying Formation分类
天文与地球科学引用本文复制引用
王文之,杨跃明,文龙,罗冰,罗文军,夏茂龙,孙赛男..微生物碳酸盐岩沉积特征研究--以四川盆地高磨地区灯影组为例[J].中国地质,2016,(1):306-318,13.基金项目
国家科技重大专项“四川盆地海相碳酸盐岩油气资源潜力、有利勘探区带评价与目标优选研究”(2011ZX 05004-005)及中国石油第四次油气资源评价--四川盆地第四次油气资源评价（2013E-050208）联合资助。 （2011ZX 05004-005）
