论文部分内容阅读
笔者与陆家骏同志于1983—1984年在北非从事野外地质工作一年有余。我们在新生代早第三纪海相地层中发现一巨型露天石膏矿床(远景储量可达数十亿吨),并对其中一个矿段投入了详查工作。根据巳获得的资料,将该矿床的某些地质特征向国内的同行们做一简单的介绍。一、区域地质及古地理概况在北非广泛分布着中—新生代地层,其中三叠系出露最少,常位于背斜或盐丘穿刺构造的核部,主要为陆相——浅海相含膏盐碎屑岩系。陆相地层由杂色的含盐泥岩组成,而没有灰岩。严格地讲,这是一种沙漠沉积(常混有沙丘和盐沼物质)。另一种为泻湖——浅海相沉积,
The author and Comrade Lu Jiajun from 1983 to 1984 engaged in field geology work in North Africa more than a year. We found a giant open-cast gypsum deposit in the Cenozoic Early Tertiary marine stratigraphy (with a long-term reserve of billions of tons) and put a detailed investigation into one of the mines. Based on the information obtained, a brief introduction is given to some of the geological features of the deposit to domestic counterparts. First, the regional geology and palaeogeography in North Africa is widely distributed in the Mesozoic-Cenozoic strata, of which the Triassic exposed at least, often located in the anticline or salt piercing structure of the nuclear, mainly continental - shallow marine containing cream Salt clastic rocks. The continental strata consist of mottled salt mudstone without limestone. Strictly speaking, this is a desert sediment (often mixed with dune and salt marsh matter). The other is lagoon - shallow marine sediments,