中朝板块新元古代微亮晶(臼齿构造)碳酸盐事件、层序地层和建系研究  

STUDY OF THE NEOPROTEROZOIC MICROSPAR (MOLAR TOOTH) CARBONATE EVENTS, SEQUENCE STRATIGRAPHY OF THE SINO-KOREAN PLATE AND THE ESTABLISHMENT OF THE BEIHUAN SYSTEM

作　　者：孟祥化[1] 葛铭[1] 刘燕学[2] 

机构地区：[1]中国地质大学(北京)沉积盆地研究所,北京100083 [2]中国地质科学院地质研究所,北京100037

出　　处：《地层学杂志》2006年第3期211-222,共12页Journal of Stratigraphy

基　　金：国际地质对比计划委员项目IGCP447(No.SC-GEO-546/447);国家自然科学基金(No.40172043;40572073);科技部国家重点基础研究项目(001CB711002);中国地质调查局项目(200313000055)。

摘　　要：通过对中朝板块燕山、吉辽和徐淮地区新元古代地层的沉积学、旋回地层学、锶同位素地层学以及(臼齿构造)碳酸盐岩事件和海平面变化研究,特别是IGCP447项目的全球性综合调查和对比研究,提出了增建北华系的地层划分和对比方案:以南华系底界(730±10Ma)也就是全球性成冰系的底界为北华系的顶界,而北华系底界应该对应于青白口系顶界(850Ma),即以钓鱼台组底界作为青白口系与北华系的界线。辽宁大连金石滩剖面可以作为北华系界线层型剖面的候选剖面。The Neoproterozoic strata are widely distributed in the Yanshan, Jilin-Liaoning, and XuzhouHuainan areas of the Sino-Korean Plate. Based on the sedimentology, sedimentary cyclicity, sedimentary events, and especially molar-tooth events and sea-level changes of the measured sections, a new division and correlation plan is suggested. The strata between the Nanhuan and Qingbaikou systems are suggested to be named a new system the Beihuan System. The base of the Diaoyutai Formation is proposed to mark the boundary between the Qingbaikou and Beihuan systems.

关 键 词：中朝板块 新元古代 年代地层 层序地层 北华系 

分 类 号：P534.3[天文地球—古生物学与地层学]