摘要
经过多年地面与井下工作,对新疆晚白垩世非海相地层的岩性特征、沉积环境、厚度变化及分布规律有了进一步认识.这套红色地层在不同时期、不同地段分布范围有所扩大或缩小,沉积厚度变化也较大,岩性单一,沉积环境单调,反映出气候较干燥,处于氧化及蒸发环境,生物化石较贫乏,多出现于零星层段中.介形类化石在准噶尔盆地及吐鲁番盆地中数量较多,塔里木盆地中零星可见,反映出当时为偏淡水浅水环境,主要为河流-浅湖环境,显示出晚白垩世生物群变化特征,化石组合特征明显,建立了3个介形类化石组合,为新疆地区晚白垩世陆相地层划分与对比起到了较好的作用.
After many year grounds and artesian well massive work, to the Xinjiang non-marine facies late Cretaceous stratum distribution rule, the environment of deposition, thickness change and the lothological characteristic had the further understanding.This set of red stratum in the different time, the different land sector distributed scope has the expansion or reduces, the deposit thickness change is also big, the lithological character is unitary, the environment of deposition was monotonous, had reflected the climate quite was dry, is in the oxidation and the evaporation environment, the biological fossil is deficient, appears in the fragmentary stratigraphic interval.The Ostracoda fossil has certain quantity in the Songorine Basin and the Turpan basin, the Tarim basin saw fragmentarily that, had reflected at that time for the leaning fresh water shallow water environment, mainly for the rivers - shallow lacustrine environment, demonstrated the late Cretaceous biota change characteristic, the fossil combination characteristic was obvious, has established three Ostracoda fossil combination, and contrasted the good function and the usability for the Xinjiang area late Cretaceous land facies stratum division.
出处
《新疆地质》
CAS
CSCD
北大核心
2010年第2期151-153,共3页
Xinjiang Geology
关键词
新疆
晚白垩世
陆相地层
介形类化石
Xinjiang
Late Cretaceous
Land facies stratum
Ostracoda fossil
