摘要
伊犁盆地上二叠统主要为河湖相泥岩和砂、砾岩。晓山萨依组以孢粉Ｃｏｒｄａｉｔｉｎａ－Ｈａｍｉａｐｏｌｅｎｉｔｅｓ－Ｖｉｔａｔｉｎａ组合为特征，与准噶尔乌拉泊组的孢粉组合相似；哈米斯特组为火山岩、火山碎屑岩和凝灰质砂砾岩，含Ｐａｌａｅｏｎｏｄｏｎｔａ，Ａｎｔｈｒａｃｏｎａｕｔａ等双壳化石，可与井井子沟组部分或大部分对比；铁木里克组以细粒沉积为特征，含“ＭＰＰＡＯ”双壳组合和Ｃｏｒｄａｉｔｉｎａ－Ｃｒｕｃｉｓａｃｃｉｔｅｓ－Ｐｒｏｔｏｈａｐｌｏｘｙｐｉｎｕｓ孢粉组合，与准噶尔芦草沟组的特征相似；巴卡勒河组仍含“ＭＰＰＡＯ”双壳组合，但类别较丰富，与红雁池组相同。本组顶部的介形类组合和孢粉组合显示可能属于下仓房沟群；巴斯尔干组产晚二叠世介形类，相当下仓房沟群。
The Yily Basin in the central Tianshan orogenic belt accommodates a huge thickness (about 5000-9000m) of continental Permian strata. The Upper Permian is chiefly composed of fluvial lacustrine deposits bearing fossils of sporo pollen, bivalves, ostracodes, and plants. The Xiaoshansayi Formation discordantly overlying the Wulang Group of Lower Permian consists of 419 m thick lacustrine mudstone, sandstone and conglomerate with the
出处
《高校地质学报》
CAS
CSCD
1996年第3期332-338,共7页
Geological Journal of China Universities
