近几年来,在苏联由于广泛地展开深孔钻探,自流水盆地的研究得到了巨大的成就。在许多自流盆地中曾经揭露出垫在其沉积岩下面的基岩。在苏联欧洲部分和西伯利亚东部的盆地中基岩是花岗岩和片麻岩;在中亚细亚,哈萨克斯坦,西伯利亚西部是挤揉成褶皱的各个不同年代,不同成因及不同成分的古生代沉积和各种火成岩。对于许多盆地,曾经在各不同点中确定了它们的深度,共深度很多超过1—2公里,而只在个别情况下有达3公里者。 In recent years, extensive research in deep-sea drilling in the Soviet Union has yielded tremendous achievements in research into the basin. In many artesian basins, bedrock beneath the sedimentary rocks have been uncovered. The bedrock in the continental parts of the Soviet Union and eastern Siberia is granite and gneiss. In Central Asia, Kazakhstan and western Siberia, the Paleozoic sediments and various igneous rocks of different ages, . For many basins, depths have been identified at various points of difference, for a depth of more than 1-2 km, in only a few cases up to 3 km.