古地理学报Issue(4)：473-482,10.DOI:10.7605/gdlxb.2014.04.039
塔西南坳陷中新生代蒸发岩沉积初探
Preliminary study of evaporites deposition from the Mesozoic to Cenozoic in southwestern Tarim Depression
摘要
Abstract
Based on the previous data,the fieldwork on evaporite outcrops,the halite sedimentary characteristics and the salt mineralogy study, it preliminarily discussed the distribution, the occurrence strata,and the salt mineral assemblages and genesis of the Meso-Cenozoic evaporites in the southwestern Tarim Depression.The Lens-shaped halite mainly distributed along the front of west Kunlun Mountain,and usually contained maroon or celadon muddy gravel.The lithology of halite is the same as that of the lower member of Tuyiluoke Formation.So,the halite is speculated to form during the regression of late deposi-tional period of Tuyiluoke Formation,and its strata belonged to the upper member of Tuyiluoke Formation. The laterally-discontinuous halite lenses indicated the possible existence of multiple sub-depressions of palaeo-salt-lakes,which were evaporated and formed halites under an arid climate.The evaporite minerals were mainly halite and gypsum,as well as some polyhalite and glauberite.The polyhalite in gypsum may be the products of primary gypsums replaced by late potassium-rich brine;while the secondary glauber-ites,discovered on the halite surface in Well Wubo 1 ,were probably formed during the supply of calci-um-rich groundwater to the salt lakes after its precipitation of halites.关键词
蒸发岩/石盐岩/上白垩统/古新统/塔西南坳陷/塔里木盆地Key words
evaporites/halite/Upper Cretaceous/Paleocene/southwestern Tarim Depression/Tarim Basin分类
天文与地球科学引用本文复制引用
桑洪,梁华,曹养同,朱礼春,张华,张亮,姚佛军,曾昌民,焦鹏程,姜红..塔西南坳陷中新生代蒸发岩沉积初探[J].古地理学报,2014,(4):473-482,10.基金项目
国家科技重大专项（编号2011 ZX05003-004）、“十二五”国家科技支撑课题（编号2011 BAB06B06）及国家“973”计划项目（编号2011 CB403007）共同资助 （）
