起止时间 :1996年— 2 0 0 0年古岩溶是指地质历史时期而非现代营力环境下形成的岩溶 ;深岩溶则为不受地表侵蚀基准面控制环境条件下的深埋藏岩溶作用。近年来 ,鄂尔多斯盆地、渤海湾盆地及塔里木盆地等深埋藏碳酸盐岩中的油气勘探相继取得了重大突破 ,在埋藏深度大于 2 0 0 0 Beginning and ending time: From 1996 to 2000, the ancient karst refers to the karst formed during the geologic history instead of the modern camp environment. Deep karstification is the deep-buried karstification that is not controlled by the ground erosion datum. In recent years, oil and gas exploration in deep buried carbonate rocks such as the Ordos Basin, the Bohai Bay Basin and the Tarim Basin have made major breakthroughs in succession. After burial depth is more than 2000