| 论小坝梁铜矿床的海底火山热液成因 |
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| 关键词:Submatine volcanic hydrothermal copper deposits Xiaobaloang |
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| On the Submarine Volcanic Hydrothermal Genesis of the Xiaobaliang Copper Deposit |
| This paper suggests that the time of formation of the Xiaobaliang copper deposit is late Variscan(isochron dating of Sr-isotope:T= 243±15 Ma,(￣(87)Sr/￣(86)Sr)_i=0.70493±0.00028)and the type ofgenesis is submarine volcanic hydrothermal,based on the studies of tectonic-geologic setting,macroge-ologic characteristics,isotope geochronology and micro-geochemistry.The data of Sr,S,Pb isotopes and REE geochemistry concordantly indicate that the rock-formingand ore-forming materials of the Xiaobaliang copper deposit were derived from the mantle and thefock-forming and ore-forming process occurred on the tectonic background of an ophiolite suite.The Xiaobaliang copper deposit is very similar to Cypurs-type ore deposits in many ways.Theanthors consider that the northern and eastern parts of the Xiaobaliang ore district are very prospectivefor exploration of copper deposits. |
| CHEN De-qian,ZHAO Ping,WEI Zhen-guo.1995.On the Submarine Volcanic Hydrothermal Genesis of the Xiaobaliang Copper Deposit[J].Acta Geoscientica Sinica,16(2):190-203. |
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