| 戴问天.层控铅锌矿中两类矿化的成因及相互关系——以陕南八方山为例[J].地质找矿论丛,1989,(1):14-21 |
| 层控铅锌矿中两类矿化的成因及相互关系——以陕南八方山为例 |
| GEOLOGY,RELATIONSHIP AND GENESIS OF TWO TYPE OF MINERALIZATION IN BAFANGSHAN Pb-Zn DEPOSIT |
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| DOI：10.6053/j.issn.1001-1412.1989.1. 002 |
| 中文关键词: 八方山 层状矿 网脉矿 海底热液活动 |
| 英文关键词: |
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| 摘要点击次数: 1348 |
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| 中文摘要: |
| 陕西八方山铅锌矿床存在两类密切共生的矿化:富含铅锌的整合层状矿和富含黄铜矿的网脉矿.两种矿化均由海底热液活动一次形成.前者代表矿质沉淀于海底,后者代表矿液补给带.成矿热液来自海水,于同沉积断裂中经循环加热而成. |
| 英文摘要: |
| Two type of mineralization were observed in close relationship in Bafangshang deposit,Shanxi Province i.e.conformable bedded ore-sphalerite-galena chert unit and the underlying stockwork ore taking shape of a blandet and consistiong of quartz-carbonate veins rich in chalcopyrite.Both of them are thought to be produced by sub-marine hydrothermal activity.The bedded ore was precipitated from the ore fluid discharged onto the sea floor whereas the stockwork represents the feeder zone.Such mineralization pattern is similar to Kuroko type in Japan,Sullivan in Canada,Meggen and Rammelsberg in the West Germany.However,no contemporaneous igneous activity has been demonstrated at Bafangshan deposit and in the whole Fengxian-Taibai raea.The submarine hydrothermal activity was probably related to the syndepositional faulting,which controled the sedimentary facies and thickness of Devonian seqence-ore-hosting rock.The δ34S values of sulfides suggest a sea water origin for ore solution,which may be heated by deep convective circulation along the Syn-depositional faults. |
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