苏盖特布拉克地区下寒武统微生物礁演化特征  

Evolution Characteristics of Microbial Reef of Lower Cambrian in Sugaiteblak Area,Tarim Basin

作　　者：宋金民[1] 罗平[2] 杨式升[2] 杨迪[1] 周刚[3] 李朋威[2] 陈文玲[1] 

机构地区：[1]成都理工大学油气藏地质及开发工程国家重点实验室,成都610059 [2]中国石油勘探开发研究院,北京100083 [3]中国石油西南油气田分公司勘探开发研究院,成都610000

出　　处：《新疆石油地质》2012年第6期668-671,共4页Xinjiang Petroleum Geology

摘　　要：在塔里木盆地苏盖特布拉克地区下寒武统肖尔布拉克组上段发现的由蓝细菌组成的块状微生物礁呈北北东-南南西向展布，厚30～70m，具两期前积特征：第一期以原地生长的附枝菌为标志；第二期以蓝细菌凝块和叠层石为标志。微生物礁内部由下到上呈现出颗粒滩→原地生长的附枝菌礁→凝块石→叠层石的演化规律，表明微生物礁是在一个水动力条件逐渐增强的环境中生长的。The massive microbial reef composed of Cyanobacteria of upper Xiaoerblak formation of the Lower Cambrian found in Sugaite- blak area in Tarim basin is distributed in NNE-SSW, with thickness of 30-70 m and two-stage progradation features. The first stage is char- acterized by auloehthonous growing Epiphyton, the second one by thrombolites and stromatolites. The interior structures of the microbial reef show thai the evolutions of grain bank→autochthonous growing Epiphyton reef→thrombolitcs→stromatolites from the bottom to the top indicate that the growth of the nficrobial reef is a gradually increasing process of hydrodynamic intensity upward.

关 键 词：塔里木盆地 苏盖特布拉克地区 下寒武统 肖尔布拉克组 微生物礁 附枝菌 

分 类 号：TE111.3[石油与天然气工程—油气勘探]