摘要
作者在辽北顾官电发现了与殷屯组连续过渡整合接触的上覆地层(景儿峪组),确切地展示了殷屯组的内部结构及其与上下地层间的接触关系,该组应位于景儿峪组之下铁岭组之上,可与辽东的永宁群辽西的下马岭组和吉林浑江的大罗圈河组相对比。殷屯组以及与之对比的地层的底部砾岩不仅指示华北地台主体抬升,而且也标志着华北地台的演化趋于成熟。
The Yintun Formation with a little isotopic data and palaeontological information is not covered by the immediate overlying strata, up till now. its position is not defined yet in regional stratigraphic column. The finding of the Yingutn geological section is very important in the reseach of the yintun formation. In the section, it is confomable with the overlying Jingeryu formation in contact, comparable with the following, fomations: the Yongning Group in eastern Liaoning province, the Daluoquanhe formationin southern Jilin province, the Xiamaling formation in eastern Hebei—western Liaoning, the Baoshankou fomation in eastern Shandong。 These formations all belong to a unique molasse facies in same times, representing a key tectonic boundary.It may be the original cover of the old compound terrain in North China and Northeast China.
出处
《吉林地质》
1990年第1期31-41,共11页
Jilin Geology
关键词
殷屯组
时代
大地构造
地台
底砾岩
yintun formation North china Platfrom Basal conglomerate North Liaoning
