Characteristics and Genesis of Fine‐Clastic Rock‐Type Au Deposits in the Liaodong Rift
Characteristics and Genesis of Fine‐Clastic Rock‐Type Au Deposits in the Liaodong Rift
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DOI：
10.1111/j.1755-6724.2000.tb00025.x
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发表时间：
2000-09
期刊：
影响因子：
--
通讯作者：
Yang Dejiang
中科院分区：
文献类型：
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作者：
Yang Dejiang
摘要辽东裂谷中的金矿床产于下元古界中上段碳酸盐岩和细碎屑岩的层间。与国外卡林型Au矿床及滇黔桂、秦岭、川西等地的金矿床相比，它们在许多方面具有相似性。本文论述了含矿建造、充矿构造的地质特征及成矿特征。通过对成矿、热、水来源的讨论，指出该Au矿床属渗流改造型热液矿床。这符合“邻区成矿”的原则，即，矿床形成于邻近的含矿层中，最新的热液事件是形成Au矿床的主要因素。
Abstract Gold deposits occurring in the Liaodong rift are located in interlayered carbonate rocks and fine‐clastic rocks, belonging to the middle and upper parts of the lower Proterozoic. Compared with the Carlin‐type Au deposits abroad and gold deposits in Yunnan‐Guizhou‐Guangxi, Qinling and western Sichuan Province, they are similar in many respects. This paper discusses the geological features of ore‐bearing formations and ore‐filling structures and metallogenetic characteristics. Through the discussion on the sources of ores, heat and water, it points out that the Au deposits belong to vadose reworked hydrothermal deposits. This conforms to the principle of “mineralization in the neighbouring areas”, i.e., the deposits are formed in nearby ore‐bearing layers, and the latest hydrothermal event was the main factor in forming the Au deposits.