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豫西卢氏县田家坪铅锌矿床地质特征及成因
- 马留锁|杨光忠|王博文|莫少伟|梁新辉|常嘉毅
- 作者单位：
- 卢氏县自然资源局|河南省地质矿产勘查开发局第一地质矿产调查院&河南省金银多金属成矿系列与深部预测重点实验室|河南省地质矿产勘查开发局第一地质勘查院|卢氏县自然资源局|河南省地质矿产勘查开发局第一地质矿产调查院&河南省金银多金属成矿系列与深部预测重点实验室|河南省地质矿产勘查开发局第一地质矿产调查院&河南省金银多金属成矿系列与深部预测重点实验室
基金项目：
- 河南省自然资源厅地质勘查项目（2018-22-3）
详细信息：
- 作者简介：
- 马留锁(1972—)，男，河南卢氏人，工程师，从事矿产勘查研究、自然资源管理工作；河南省卢氏县城关镇东关北新村矿管局院内，卢氏县自然资源局，472200；E-mail:715595430@qq.com
- 通讯作者：
- E-mail:2241523393@qq.com，18537908733
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Geological characteristics and genesis of Tianjiaping Lead-Zinc Deposit in Lushi County,Western Henan Province
- English Author：
- Lushi County Natural Resources Bureau|The First Institute of Geology and Mineral Exploration,Bureau of Geology and Mineral Exploration and Development of Henan&Key Laboratory of Gold and Silver Polymetallic Ore-forming Series and Deep Prognosis of Henan Province|The First Geological Exploration Institute,Bureau of Geology and Mineral Exploration and Development of Henan|Lushi County Natural Resources Bureau|The First Institute of Geology and Mineral Exploration,Bureau of Geology and Mineral Exploration and Development of Henan&Key Laboratory of Gold and Silver Polymetallic Ore-forming Series and Deep Prognosis of Henan Province|The First Institute of Geology and Mineral Exploration,Bureau of Geology and Mineral Exploration and Development of Henan&Key Laboratory of Gold and Silver Polymetallic Ore-forming Series and Deep Prognosis of Henan Province
- Unit：
- 摘要
- 在线预览
- 参考文献
摘要:
田家坪铅锌矿床位于华北地台南缘洛南—栾川台缘褶带，属于中低温岩浆期后热液作用形成的构造蚀变岩型脉状铅锌矿床。矿体围岩为沿断裂侵入的印支期粗面岩，断裂顶底板为中元古界熊耳群安山岩。通过对矿体特征、矿石特征、围岩蚀变分带特征的研究，认为该矿床成矿经历3个阶段：拉张环境下近东西向断裂的形成、印支期粗面岩脉的侵入、燕山期含矿流体在粗面岩墙二次压裂形成的储矿空间富集成矿，推断矿床成矿年龄接近131 Ma。矿体倾向上具备较大的深部找矿空间，F1断裂向西延伸方向亦是多金属矿找矿的重要方向。
关键词:
地质特征；构造蚀变岩型；粗面岩；田家坪铅锌矿床；卢氏县
Abstract:
The Tianjiaping Lead-Zinc Deposit is located in the Luonan-Luanchuan Platform margin fold belt on the southern margin of the North China Platform.It belongs to the tectonic altered rock type deposit formed by the hydrothermal process after the medium-low temperature magmatic period.The surrounding rock of the ore body is Indosinian trachyte intruded along the fault and the roof and floor of the fault zone is the andesite of the Middle Proterozoic Xionger Group.Based on the study of ore body characteristics,ore quality and surrounding rock alteration zoning,it is considered that the mineralization of the deposit has gone through 3 stages:the formation of nearly EW-trending faults in the extensional environment,the intrusion of Indosinian trachyte dikes,and ore-bearing fluid of Yanshanian period enrichment and mineralization in the ore storage space formed by secondary fracturing of trachyte dyke.It is inferred that the ore-forming age of the deposit is close to 131 Ma.It is pointed out that the ore body has a large deep prospecting space in tendency,and the westward extension of F1 fault is also an important direction for polymetallic ore prospecting.
Keywords:
geological characteristic;tectonic altered rock type;trachyte;Tianjiaping Lead-Zinc Deposit;Lushi County
