地质调查与研究2012，Vol.35Issue(2)：81-95,15.
论燕山地区青白口系的解体
On the Disintegration of the Neoproterozoic Qingbaikouan System in Yanshan Range, North China
摘要
Abstract
On the basis of the new datings, the Xiamaling Formation of the lower Qingbaokou System in Yanshan range has been identified as the deposits of the early Ectasian System(1 400 - 1 200 Ma), the middle Mesoprotero-zoic. As for the Changlongshan and Jingeryu Formations of the upper Qingbaikou that they are without more pre-cise dating up to now, through the research for the nature of the boundary between them and underlying strata, and the comparison with depositional characteristics of different stages of tectonic development in a number of representative Neoproterozoic basin in Liangdong Peninsula and south China, this paper tend that they are not the upper Qingbaikou (Tonian) as shown by previous K-Ar ages and are the deposits in the early Nanhua period (or early Cryogenian) under the background of that the Rodinia Supercontinent was further broken-up.Their age is be-tween 780 Ma and 660 Ma possibly. That is to say, the standard Qingbaikouan System in yanshan range is not the strata of the Qingbakouan Period and all the Qingbaikouan System in yanshan range will be disintegrated possi-bly.关键词
解体/青白口系/新元古界/燕山/华北Key words
disintegration/Qingbaikouan System/Neoproterozoic/Yanshan range/North China分类
地质学引用本文复制引用
朱士兴,刘欢,胡军..论燕山地区青白口系的解体[J].地质调查与研究,2012,35(2):81-95,15.基金项目
全国地层委员会项目：中国主要断代地层建阶研究 （）
中国石油化工股份有限公司前瞻性项目 （）
中国地质大学（武汉）生物地质与环境地质国家重点实验室主任基金项目 （）
