BMT Based Spatial Distribution Characteristics of Tugulu Group in the Northern Junggar Basin
Junggar Basin is one of the main prospecting target for sandstone type uranium at present.However,after the discovery of industrial uranium mineralization in the Ulunguhe Formation of Eocene Oligocene in the northern part of Jungar basin at the beginning of the 21st century,few systematically exploration was carried out in the past 20 years,and the uranium mineralization in deep is still unclear.In recent years,continuous efforts has been paid to the uranium prospecting,interlayer oxidation zone has been found in the Lower Cretaceous Tugulu Group along the hanging wall of the Tuzi Tuyila thrust fault,but few geologic and geophysical effort are conducted in same layer under the falling wall of the Tuzi Tuyila thrust fault due to is relatively large burial depth,which resulted in the uncertainty of the burial depth,thickness and the distribution range.In this paper,the broadband magnetotelluric sounding method(BMT),which has the advantages of large exploration depth,sensitivity to high conductivity layers,effective to high resistance layers,convenient in construction and low in cost,was introduced to perform data collection and processing.Using Occam inversion technology,reliable inversion resistivity cross-sections were obtained.Combined with drilling data and geological interpretation,the burial depth,the spatial distribution characteristics of the Lower Cretaceous Tugulu Group was obtained.With thickness and distribution map,the structure and favorable areas for uranium mineralizatiuon were analyzed for the next uranium exploration in this area.
BMTnorthern of Junggar BasinTugulu Groupresistivity
万方数据
维普
