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Sains
Malaysiana 46(11)(2017): 2149-2162 http://dx.doi.org/10.17576/jsm-2017-4611-16 Non-seismic Geophysical Prospecting Model of Beiya Gold Mine in Western Yunnan Province (Model
Pencarigalian Geofizik tak Seismik Lombong Emas Beiya di Wilayah
Barat Yunnan) JIAN
YANG1*, QIAO WANG1, SHENGXIAN LIANG1,
JING GUO1 & MUHAMMAD AQEEL
ASHRAF2 1Chengdu Center, China Geological
Survey, Chengdu 610081, China 2International Water, Air & Soil
Conservation Society, 59200 Kuala Lumpur, Federal Territory Malaysia Received:
25 January 2017/Accepted: 25 May 2017 ABSTRACT According to the basic rules and characteristics of the gold-polymetallic
deposits of Beiya gold mine area in terms of mineralization
and ore controlling, it is concluded that skarn deposit is the
main ore deposit type in this area and the geological conditions
are analyzed by the statistics of the physical parameters. Then,
the tectonic, rocks, stratum, ore geophysical models have been
treated by the forward modeling numerical simulation and the
results are analyzed comprehensively. Based on the forward modeling
results, combined with the relevant physical differences, the
principle and exploration method test and research for the comprehensive
geophysical exploration technology has been carried out, covering
the induced polarization and magnetic prospecting for the ore
body as well as the indirect geophysical exploration method
by means of plane gravity data, audio-magnetotelluric sounding
for rock mass and tectonics, the mineralization mode-physical
forward modeling - geophysical exploration mode has been established
and good results have been achieved. Therefore, a location forecast
method has been put forward for the concealed skarn type Fe-Au
deposit which is adaptive to the mineralized geological background
of Beiya and other similar areas. Keywords: Beiya gold ore; forward modeling; prospecting model ABSTRAK Menurut peraturan asas dan ciri timbunan polilogam emas di kawasan lombong
emas Beiya daripada segi mineralisasi dan pengawalan bijih,
dapat disimpulkan bahawa timbunan skarn adalah timbunan bijih
utama di kawasan ini dan keadaan geologinya dianalisis oleh
parameter fizikal statistik. Seterusnya, model tektonik, batuan,
strata dan geofizik bijih telah dirawat menggunakan model ke
hadapan simulasi berangka dan hasilnya dianalisis secara menyeluruh.
Berdasarkan hasil pemodelan ke hadapan, digabungkan dengan perbezaan
fizikal yang relevan, kaedah pengujian dan penyelidikan prinsip
dan eksplorasi untuk teknologi eksplorasi geofizik yang komprehensif
telah dijalankan, meliputi kaedah polarisasi teraruh dan pencarigalian
magnet untuk jisim bijih serta kaedah penerokaan geofizik tidak
langsung dengan menggunakan data graviti pesawat, bunyi magnetotellurik
untuk jisim batuan dan tektonik, mod mineralisasi - pemodelan
fizikal ke hadapan - mod penerokaan geofizik telah dibentuk
dan keputusan yang baik telah dicapai. Oleh itu, kaedah ramalan
lokasi dikemukakan bagi mengesean timbunan skarn jenis Fe-Au
tersembunyi yang mudah sesuai dengan latar belakang geologi
mineral di kawasan Beiya dan kawasan yang sama. Kata kunci : bijih emas Beiya; model
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