Geophysical Implications for Prospective Prediction of Copper Polymetallic Ore Bodies: Northern Margin of Alxa Block, China
نویسندگان
چکیده
The Alxa Block is located in the middle part of Central Asian orogenic belt, which coupling belt North China, Tarim, and Kazakhstan Plates. east–west-trending deep faults control stratigraphic distribution magmatic activity region. To detect EW-trending ore-controlling structures, a 440 km NS section magnetotelluric sounding was conducted from Minle to Ejinaqi. phase tensor electrical principal axis were analyzed based on measured data build exploration model. structure model along obtained using nonlinear conjugate gradient (NLCG) 2D inversion. Combined with geological, geophysical, deposit characteristics area, comprehensive study profile shows that resistivity presents as zoned profile. Engelwusu ophiolite mélange stacked clumps high low resistivity, indicating northern margin Belt subducts below high-resistivity zone, representing passive continental margin. southern end primarily prospecting potential area for copper–gold deposits, whereas corresponds copper polymetallic deposits.
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ژورنال
عنوان ژورنال: Minerals
سال: 2022
ISSN: ['2075-163X']
DOI: https://doi.org/10.3390/min12050653