古地理学报2011，Vol.13Issue(6)：627-634,8.
苏皖北部新元古界臼齿碳酸盐岩脉类型及其形成机理
The Neoproterozoic molar-tooth carbonate rock veins in northern Anhui and Jiangsu Provinces and their forming mechanism
摘要
Abstract
Molar-tooth carbonate rock veins are abundant in the Neoproterozoic carbonate rocks in northern Anhui and Jiangsu Provinces. According to their features in different strata, two types of molar tooth carbonate rock vein can be identified. Type 1, mostly disorderly outcropped, coexisted with stroma tolite bioherms, gravels, debris, slump structures, swash channels and hummocky cross-beddings, were formed in the upper Liulaobei, Jiuliqiao and Niyuan Formaitons which belong to the Lower Neoproterozoic. Type 2, which were stably outcropped in widely spread rhythmic units with graded beds and typical ero sion surfaces, were outcropped in other formations which belong to the Upper Neoproterozoic. The initial forming power of the molar-tooth carbonate rock veins might be the crustal movements which were caused by the break-up of the Rodinia. Type 1 was formed in tempestuously changing environments during the depositional period, and might be a prelude signal of the Rodinia's break-up, while Type 2 was formed in steadily, periodically changing environments during the early diagenetic process, might indicate that the intermittent release of the earth stress during the break-up period of the Rodinia.关键词
臼齿碳酸盐岩脉/新元古界/形成机理/苏皖北部Key words
molar-tooth carbonate rock veins/ Neoproterozoic/ forming mechanism/ northern Anhui and Jiangsu Provinces分类
天文与地球科学引用本文复制引用
贾志海,宁霄峰,洪天求,郑文武..苏皖北部新元古界臼齿碳酸盐岩脉类型及其形成机理[J].古地理学报,2011,13(6):627-634,8.基金项目
国家教育部博士点基金项目(编号:20070359019)和国家自然科学基金项目(编号:40902096)共同资助 （编号:20070359019）
