论文部分内容阅读
华北陆块南缘四十里长山地区下震旦统四顶山组叠层石白云岩与其上部凤台砾岩的接触界面上为一薄层黄铁矿,对其宏观和微观以及地球化学特征研究表明,这一接触界面为裂离不整合。这一裂离不整合的发现和确认为研究华北陆块在Rodnia超大陆裂解时期的地质响应提供了直接依据,也为研究凤台砾岩及其相对应地层的成因提供了重要的构造背景条件。
A thin layer of pyrite is found on the contact interface between the stratiform dolomite of the Lower Sinian Sidingshan Formation and the upper part of Fengtai conglomerate in the Changshu area of the southern margin of the North China block. The macroscopic, microscopic and geochemical Characterization studies show that this contact interface is fission unconformity. The discovery and confirmation of this fragmentation and disintegration provide a direct basis for studying the geologic response of the North China block to the Rodnia supercontinent during the cracking period and also provide important tectonic setting conditions for the study of the genesis of the Fengtai conglomerate and its corresponding strata .