摘要
黔东、湘西寒武纪碳酸盐重力流沉积,类型多样,其中碎屑流砾屑灰岩是最主要的再沉积碳酸盐岩,发育在扬子碳酸盐台地南部和北部边缘斜坡相,主要为复合支撑,在其流动过程中普遍存在着脉动性或波动性以及流动转化现象。据砾屑灰岩的分布范围、层位变化及旋回特征,表明扬子碳酸盐台地南部边缘,从寒武纪至早奥陶世是向东南推进的,扬子地块南缘已进入地壳变薄下沉的成熟被动大陆边缘演化阶段。
Cambrian carbonate gravity flows in Guizhou and Hunan are various in kind.Debrisflow calcirudite is the main redeposited carbonate developed on the south and north slopeof the Yangtze carbonate platform.Pulsation,undulation and flow-trasformation are verycommon in its flow process.According to the distribution range,horizon variation andcyclic property of the calcirudite,the south margin of the Yangtze carbonate platformgenerally progradated southeastward from the Cambrian to Early Ordovician,and theYangtze landmass had reached the evolution stage of matured passive continental margin.
出处
《石油与天然气地质》
EI
CAS
CSCD
北大核心
1990年第3期235-246,共12页
Oil & Gas Geology
