河南理工大学学报：自然科学版2011，Vol.30Issue(4)：411-417,7.
焦作云台山与青龙峡景区中奥陶统马家沟组沉积特征及演化规律
Sedimentary characters and evolution of the middle ordovician Majiagou Formation in the Black Dragon Canyon,Yuntai Mountain,Jiaozuo area
摘要
Abstract
Based on the composition and distribution characteristics of lithological characters,sedimentary structures,body fossils and ichnofossils in the Middle Ordovician Majiagou Formation within Black Dragon Canyon,Yuntai Mountain World Geopark,Jiaozuo area,detailed research on the sedimentary environment and evolution have been got.It shows that the Majiagou Formation in the study area mainly consists of the tidal-flat and carbonate platform deposits,which can be divided into two major sedimentary facies including tidal-flat facies and carbonate platform facies,and three depositional subfacies such as supratidal zone,intertidal zone and subtidal open platform.The sedimentary evolution of the Majiagou Formation in the study area experienced seven sea-level change cycles,each of the cycle begins from the deposit of intertidal zone（or supratidal zone）,change into the deposit of subtidal open platform while the sea water gradually becomes deeper,and then turn into the deposit of intertidal zone when the sea water continuously becomes shallower,seven times of sea level change process in the sedimentary period of the Majiaogou Formation can be recognized.It is of great significance to study on the depositional environment and evolution in the Majiagou Formation of the Black Dragon Canyon in recovering the sedimentary environment in early Palaeozoic as well as enriching the geological information in Yuntai Mountain World Geolpark.关键词
云台山与青龙峡景区/奥陶系/马家沟组/碳酸盐岩Key words
Black Dragon Canyou/Ordovician/Majiagou Formation/carbonate rock分类
天文与地球科学引用本文复制引用
胡斌,张文涛,牛永斌..焦作云台山与青龙峡景区中奥陶统马家沟组沉积特征及演化规律[J].河南理工大学学报：自然科学版,2011,30(4):411-417,7.基金项目
国家自然科学基金资助项目 （）
国家高校博士点专项基金资助项目 （）
河南省科技计划项目 （）
河南省高校科技创新团队项目 （）
