摘要
在陆相河湖沉积的八道湾组（早侏罗世）内，新发现一些海相瓣鳃类化石，表明当时准噶尔盆 地在一短期内曾与海水相通，或者海水通过某一水系涌入该河湖区。从生态特征分析，当时可能为一 泛滥平原。根据海相化石对比，化石产出层位八道湾组上部的时代可能属西湟缪尔期。
Some marine bivalves were found in the Badaowan Formation(Early Jurassic) with continental lacustrine sediment, which indicates that Junggar basin used to be coneded with sea water in a short bine or the sea water emerged the lake. Analysis on the ecological characteristics,there was a flooded plain at that time. According to the correlation study of marine fossils, the occurence horizon of the fossil, the upper part of Badaowan Formation probably belongs to Xihuangmur Stage.
出处
《新疆地质》
CAS
CSCD
2000年第1期28-31,共4页
Xinjiang Geology
关键词
准噶盆地
早侏罗世
八道湾组
海相
瓣鳃类
Junggar Basin
Early Jurassic
Badaowan
formation
marine
bivalves
