河南理工大学学报（自然科学版）2013，Vol.32Issue(1)：46-51,6.
华北东部前中生代盆地基底的几何学特征
Geometry characteristics of pre-mesozoic basin of eastern part of north China
摘要
Abstract
Several major unconformity, as well as the top of Zhangxia formation in the Pre-Mesozoic basin of the eastern part of North China, can be recognized as a plane in corresponding geological period respectively. Based on the thickness change of strata between these geological interfaces, the basement morphology of Pre-Mesozoic in a main geological period can be reflected. The results showed that the Mesoproterozoic basin is composed of two NE-NEE trend sub-basins, in the form of narrow strip openning to NE and SW, and the subsidence centers are in Jixian, Lingyuan, the northern of Shenyang and the western Henan Province. In Qing-baikouan period of the Neoproterozoic, the northern part of the basin became smaller, and the subsidence center transfers to Xuanhua and Huairou; the southern part of the basin began to expand obviously, and the basin basement began tilting to south and east. At the same time, the eastern basin along the Tancheng-Lujiang Fault Zone began to activities. In Sinian period, the basin inherits the distribution range of Qingbaikouan peri-od, but the difference between the two basin basements become to more and more obviously. In Early Paleozoic , the basin extended to the whole range of North China Craton, but the basement morphology showed obvious ups and downs. In early period of Early Paleozoic, the Northern and Southern part of basin occurred subsidence and the middle began to uplift simultaneously, the basin showed a asymmetrical saddle shape; In late period of Early Paleozoic, the middle began to subside and the northern and southern part of basin become to uplift , forming a shape of dustpan opening to east. In the sedimentary period of Benxi formation, Late Paleozoic, the basin also had a shape of dustpan opening to east, inheriting the basement morphology in the later of Early Paleozoic. In the sedimentary period of Taiyuan formation, the basin basement was absolutely changed. The basin basement began to uplift in northern part and subside in the southern part, lasting to the end of Late Paleozoic.关键词
华北东部/前中生代/盆地/几何学Key words
eastern part of North China/ pre-mesozoic/ basin/ geometry characteristics分类
天文与地球科学引用本文复制引用
曹高社,徐国强,高立祥,林玉祥,杨启浩,徐光明..华北东部前中生代盆地基底的几何学特征[J].河南理工大学学报（自然科学版）,2013,32(1):46-51,6.基金项目
国家油气专项"华北东部前第三系盆地渲化与叠合关系研究"(XQ-2004-03-10). （XQ-2004-03-10）
