In order to understand the distribution of Carboniferous-Permian in Ejina Banner and its vicinities,and provide evidence for oil and gas resources investigation and evaluation,through fine processing and interpretation of previous data and newly finished integrated geophysical survey sections,by using joint inversion of gravity,magnetic and electronic data under restriction of seismic and well data,this paper preliminarily presented the distribution and burial situation of Carboniferous-Permian residues in the region.Thus it is concluded that the Carboniferous-Permian strata show the characteristics of thicker residual and suitable depth.The method has solved the technical problem of Carboniferous-Permian distribution interpretation and provides evidence for Carboniferous-Permian research within the internal part of the basin.
Common seismic probe mostly is reflected wave exploration which focuses on exploring stratigraphical boundary,but in Metal Minerals probe,there maybe is no crude reflector.becuse the difference of maters is not big enough between mineral and its wall rock,and as a result of this it is badly that the result of reflected wave exploration.In this paper,we begain with transmitted wave theory.and then discussed mineral seismic wave field response characteristic which base on double wave field reconstruction used extremum method for detail.Lastly,We introduced Shortest Path Method and Sub-Space Inversion Method into mineral inversion successfully,and the result has shew clearly that transmitted wave exploration has rich feasibility and practicability.
1∶500 000 regional geochemical explorations (RGE), applied in the region of middle -high mountains and seriously dissected terrains, have characteristics of large controlling ability and high productive efficiency. The anomalies and anomaly zones were the important targets to find mineral deposits. On the basis of discussing the working methods and results of 1∶500 000 RGE, the paper discussed advantages disadvantages among 1∶500 000 0,1∶500 00 and 1∶100 000 RGE in three typical areas, and pointed out that 1∶500 00 and 1∶100 000 RGE should be arranged systematically along minerogenetic zones combined with geochemical anomaly zones and ore-controlling structure zones and the mineralizing zones, and suggested the specific work methods.
