Volcanic rocks in the study area, including dacite, trachyandesite and mugearite, belong to the intermediate-acid, high-K calc-alkaline series, and possess the
There are few 3-D seismic profiles and drillings in the middle part of the Qibei depression in the Dagang oilfield, and more than 70% of the 2-D seismic profile
【正】It is a major continuous depocenter in Dalangtan area,western Qaidam basin since Early Cenozoic,which is most important Neogene salt deposits center in Qa