Abstract:
This paper is the result of mineral exploration engineering.
Objective The West Kunlun region of Xinjiang is an important metallogenic belt in China, with high altitude, bad climate and strong topographic cutting; it is extremely difficult to carry out prospecting. It is urgent to establish an efficient prospecting technology system to achieve a breakthrough in prospecting.
Methods In this paper, TM, ETM+, OLI, ASTER, Gaofen1 and 2, WorldView-2/3 and other satellite data are used, and the fusion technology of radar image and optical image, improved crosta method (iCrota) and energy spectrum area are adopted (S-A) a series of remote sensing alteration anomaly extraction methods such as fractal filtering method and image filtering are used to extract mineralization alteration information, and the remote sensing information is fused with geological and geochemical data by using evidence weight model and fuzzy evidence weight model, so as to delineate prospecting scenic spots; In the prospecting target areas of key prospective areas, field rapid field analysis (XRF and LIBS) and portable geophysical exploration (AMT, IP, etc.) of ground soil/debris geochemistry are carried out to quickly trace, delineate and evaluate anomalies.
Results Combined with metallogenic geological background, metallogenic law and prospecting signs, 24 prospecting prospects were delineated. After verification of surface geochemistry, geophysics and shallow engineering, lead-zinc mineralization (mineralization) points such as Heishan and Pingdi were confirmed to realize rapid prospecting.
Conclusions The mineral resource delineation and evaluation technology, which integrate remote sensing comprehensive information extraction, multiple geoscience information fusion and rapid evaluation method of surface geophysical and geochemical exploration, is very suitable to be carried out in Alpine mountainous areas.
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