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Zhao Z.,Chinese Academy of Geological Sciences | Zhao Z.,Key Laboratory of Metallogeny and Mineral Resource Assessment | Chen Y.C.,Key Laboratory of Metallogeny and Mineral Resource Assessment | Chen Y.C.,Chinese Academy of Geological Sciences | And 8 more authors.
Acta Petrologica Sinica | Year: 2014

The Nanling Scientific Drilling-1 of the Sinoprobe Progress (abbreviation as SP-NLSD-1) is situated at Yinkeng area, Yudu County, southern Jiangxi Province. Tectonically, it is located on the connection part of EW-trending Nanling structural-magmatic metallogenic belt and NE-trending Wuyi metallogenic belt, which is one of the best areas to do the research on the crustal structures and deep metallogenic mechanism. The NLSD-1 is started at June 25, 2011, and finished at July 22, 2013. The main borehole had been drilled to the depth of 2967. 83m, with all the cores had been in its position accurately. Our research team has built up a refined logging rule which is applicable to the scientific drilling in mining area. Meanwhile, the petrologic, structural, mineralization, geochemical, petrophysical and other refined profiles of NLSD-1 has been established and a number of important investigations have been carried out. The Nappe structure (Fl) that controlling the intrusions and ore-bodies in Yinkeng region is uncovered at the depth of 1373.71m. The upper strata of Fl are pyroclastic rocks of Kuli Formation of the Qingbaikou System, while strata below Fl are marine-terrigenous facies sediments of Leping-Chetou-Xiaojiangbian (Qixia) Formation of the Permian System. Twenty-nine magmatic dykes (granite porphyry, rhyolite porphyry, granodiorite porphyry and dioritic porphyrite), hundrends of veinlet-stockwork-disseminated lead-zinc-copper-gold-silver mineralization zones in the shallow part and veinlet-disseminated tungsten-bismuth mineralization information in the deep part had been uncovered. Basically, the preliminary scientific objective of the Nanling Scientific Drilling-1 has been achieved.

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