广西南丹六寨马平组上段的深水碳酸盐岩屑流及其地质意义Deep-water carbonate debris-flow in the Upper Maping Formation of Liu-zhai, Nandan of Guangxi
江纳言 ,周祖仁 ,黄占兴
摘要(Abstract):
<正> 以南盘江大断裂与南丹一河池大断裂为界,构成了西南侧晚古生代滇黔桂盆地和北东侧台区的分野。沿此界线的广西南丹、贵州罗甸、紫云和镇宁等地二叠纪地层中多处发现有不连续的层状砾屑灰岩体,被认为系一套包括滑塌和重力流堆积在内的台前斜坡相沉积。这些沉积物的颗粒组分主要由浅水碳酸盐岩屑和浅水生物屑所组成,具有异地碎屑流成因的颗粒特征(分选性差,不明显的或差的磨圆度,有或不明显的粒度递变现象和其他特征)。根据砾屑灰岩体的沉积构造特征和围岩及夹层的性质(深色、薄层状泥晶灰
关键词(KeyWords):
基金项目(Foundation):
作者(Author): 江纳言 ,周祖仁 ,黄占兴
DOI: 10.19839/j.cnki.dcxzz.1987.04.006
参考文献(References):
- 周祖仁,1985:二叠纪菊石的两种生态类型。中国科学,B辑,1985年7期。
- Cook, H. E. and Mullins, H. T., 1983: Basin margin nvironment. In Carbonate Depositional Environments, edited by Scholle, P. A., Bebout, D. G. and Moore, C. H. pt. 11, AAPG, Tulsa.
- Davis, G. R., 1977: Turbidites, debris sheets and truncation structures in Upper Paleozoic deep-water carbonate of the Sverdrup Basin, Arctic Archipelago, In deep-water carbonate environments, edited by Cook, H. E. and Enos, P., SEPM Spec. Pub., no. 25.
- Ross, A. R., 1982: Paleobiology of Fusulinaceans. In Third North American Paleontological Convention, Proceedings, vol. 2.