| 云南省鹤庆县小天井锰矿的地质特征及盆地控制 |
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| 引用本文：刘文佳,李志群,梁秋原,陈明伟,邹云达.2013.云南省鹤庆县小天井锰矿的地质特征及盆地控制[J].地球学报,34(s1):151-156. |
| DOI：10.3975/cagsb.2013.s1.23 |
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| 基金项目:全国矿产资源潜力评价项目“云南省锰矿潜力评价”(编号: 1212011121022) |
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| 中文摘要:小天井锰矿是滇西地区最大的锰矿床, 产于滇西上三叠统松桂组碎屑岩建造中, 由氧化锰矿石和碳酸锰矿石组成, 矿石成份较单一。碳和氧同位素的特征揭示了成矿物源的多来源及成矿的多阶段特征。稀土配分模式属轻稀土富集型。鹤庆锰矿形成于扬子地块西缘三叠纪诺利期盐源—丽江盆地中的丽江凹陷带之内的一个次级叠加盆地。盆地和成矿作用受控于同生断裂活动。建立了成矿模式。 |
| 中文关键词:矿石成分 稀土配分 碳和氧同位素 叠加盆地 同生断裂 成矿模式 鹤庆小天井锰矿 |
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| Geological Characteristic and Basin Control of the Xiaotianjing Manganese Ore Deposit in Heqing County of Yunnan Province |
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| Abstract:As the largest manganese deposit in the west of Yunnan Province, the Xiaotianjing manganese ore deposit occurs in clastic rocks of Triassic Songgui Formation. The manganese ore deposit is composed of manganese oxides and carbonate, and the ore composition is rather simple. The carbon and oxygen isotopic characteristics show that the ore-forming materials came from multi-sources and the ore-forming process was characterized by multistage evolution. The distribution model of rare earth elements belongs to enrichment type of the light rare earth elements. The deposit was formed in a secondary superimposed basin in the Lijiang depression belt within the Yanyuan-Lijiang basin of Triassic Nuoli period on the western margin of the Yangtze massif. The basin and the metallogenic activity were controlled by contemporaneous faults. A metallogenic model was established in this paper. |
| keywords:ore composition REE patterns carbon and oxygen isotopes superimposed basin contemporaneous faults metallogenic model Xiaotianjing manganese deposit in Heqing |
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