Jurassic Strata Distribution Research Of Chahantonggu Basin

In recent years the outcrops surrounding mountains about chahantonggu basin has many results published research,But people for quaternary cover of center of basin area still not know much,General about cha han tong gu basin of the Jurassic strata of ancient basin depth and ups and downs features,Ordinary geological research can only according to the geological characteristics and the surrounding mountains that regional tectonic characteristics, can't detailed that its distribution characteristics. Cause the reasons for this is mainly due to the general geological survey, only on the surface of the acquired information about is the surface of geological information, underground is only through the theories about how get, it makes deep within the earth with a lot of information research uncertainty .The transient electromagnetic method based on rock resistivity of differences, ore based geophysical exploration techniques, the transient electromagnetic method is to use not grounding to send back line underground in a field, a field during a break, use no grounding coil produced second field measurement underground medium to determine underground electrical uneven body position and presumably the scale and electrical conductivity. Because the decay rule induction second field with the conductivity of underground geologic, conductive better, on the second field slower decay, conductive poorer, second field attenuation and faster. Therefore, through the study of the second field detecting underground can achieve decay laws purpose of anomalous body. But because the transient electromagnetic inversion has multi-solutions, so only with transient electromagnetic a method study has certain limitations, so combining shock electrical method and testing method to solve the inversion multi-solutions problems, in order to make the results more accurate.Based on geological research as a starting point, combining the transient electromagnetic method to solve alone cannot completely solve based DeZhiSuo, both through the ancient basin tea sweat Jurassic strata distribution characteristics, it is concluded that, through this study the distribution characteristics of the Jurassic stratum.