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Dalikou, China

Wang W.-C.,No. 310 Geological Party | Zhang J.-X.,No. 310 Geological Party | Liu L.-C.,No. 310 Geological Party | Tang Y.-K.,No. 310 Geological Party | Liu X.-J.,No. 310 Geological Party
Acta Geoscientica Sinica | Year: 2013

The ore district is located in the southern part of the eastern Tibet-western Yunnan metallogenic belt and the transitional position between the Yangtze metaplatform and the Sanjiang folded belt, belonging to the southern part of the Lijiang platform-marginal folded belt and lying in the inverted triangular area sandwiched between Jinshajiang-Ailaoshan deep fault and Chenghai deep fault. The strata exposed in the ore district include limestone of Lower Devonian Qingshan Formation, dolomitic limestone of Kanglang Formation and Lower Ordovician quartz sandstone, whereas the magmatic rocks include granite porphyry, monzonitic porphyry, lamprophyre and diabase. The authors analyzed the ore-searching prospect from such factors as geotectonic environment, geophysical conditions, geochemical conditions, remote-sensing images, and structural and magmatic conditions of the ore district, with a comparison between Beiya area and Machangqing area. It is pointed out that there exists the possibility of finding Beiya type and Machangqing type Cu, Mo polymetallic deposits in the study area.

Zhang J.-X.,No. 310 Geological Party | Liu L.-C.,No. 310 Geological Party | Chen L.,No. 310 Geological Party | Guo G.-L.,No. 310 Geological Party | And 2 more authors.
Acta Geoscientica Sinica | Year: 2013

In combination with the newest exploration achievements, this paper deals with the Xiaolongtan poyphyry Cu-Mo ore district in the aspects of ore-forming background, material sources and mineralization characteristics and, on such a basis, points out that there exist fairly favorable geological conditions and mineralization information in the ore district. Based on organizing various kinds of metallogenic information, the authors determined the key link for ore-prospecting work in the ore district, and pointed out that there exists the consistency between the invading direction of the porphyry body in the ore district and the NE-trending tectonic-magmatic belt, and that the major alkali-rich porphyry belt in the ore district assumes NE-trending distribution and invaded from northwest to southeast, thus readjusting the train of thought for ore-prospecting. The authors also indicate through analysis that there exists the possibility of finding large-superlarge porphyry Cu-Mo deposits in the ore district. The results obtained by the authors play some instructive role in search for mineral deposits in regional Himalayan period alkali-rich porphyry belt.

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