为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7......

Large amounts of vermicular fossils and a minor amount of sponge animal fossils have been found in the Early Cambrian Xi......

为恢复南华纪初期库鲁克塔格地区的古地理环境和构造背景,利用该区贝义西组岩石特征、沉积构造和粒度分析等资料,对其非冰期沉积环......