论文部分内容阅读
近几年来,我们对该盆地基底性质的划分作过一些工作。但仅限于各种物探资料,而在广阔的盆地范围内,只有三口井揭穿第三系,且分布在盆地边缘,对于两个深凹陷-西安凹陷和固市凹陷,至今未揭穿第三系。因此,对于前第三系基底的认识,尚难得到确切的解释。以往,电法、航磁解释深度与地震相比,均浅于地震深度。至于地震Ⅶ组之下是什么地层,就更难于回答。
In recent years, we have done some work on the division of the basement of the basin. But only for a variety of geophysical data. In the vast basin, only three wells were exposed through the Tertiary and distributed on the margin of the basin. For the two deep depressions, the Xi’an depression and the Gucheng depression, so far no Tertiary system has been exposed. Therefore, it is hard to get a precise explanation of the understanding of the former Tertiary basement. In the past, the electrical method and aeromagnetic interpretation depth were shallower than the earthquake depth compared with the earthquake. It is even harder to answer what strata below the Seismic Ⅶ group.