关于湘西北红岩溪地区沉积-构造-成矿研究的一些认识

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摘要湘西北红岩溪地区处于湘西—鄂西多金属成矿带的中南部,属上扬子地块东南缘,主要沉积自寒武纪至志留纪地层,沿NE向红岩溪断裂在奥陶系桐梓组、红花园组灰岩中分布了大量铅锌矿点。以地层、岩石、构造特征为研究对象,突出对含矿地层、岩石、构造的刻画,查明了成矿地质背景和成矿条件,总结了成矿规律。通过分析奥陶纪—志留纪的桐梓组风暴沉积岩、红花园组生物礁灰岩、宝塔组龟裂纹构造、新滩组远源浊积岩等现象的形成机理,建立了区内奥陶纪—志留纪的沉积-构造演化模型,指示地质背景从伸展体制的被动大陆边缘演化为挤压体制的前陆盆地; 查明了区内断裂构造与铅锌成矿的关系,认为NE—NNE向断裂为铅锌的导矿构造,而NW向小断裂则为主要容矿构造; 从流体包裹体方面探讨了铅锌成矿环境,成矿热液与盆地热卤水较为相似,成矿流体原始来源为层间水和大气降水,最终建立了区内铅锌成矿模型。

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	梁恩云
	刘伟
	刘耀荣
	黄乐清
	刘庚寅
	彭能立
	曹解华

关键词 ：奥陶系, 志留系, 演化模型, 沉积-构造, 铅锌成矿, 湖南红岩溪

Abstract：Hongyanxi area in the northwest of Hunan is on the south central of Xiangxi-Exi polymetallic metallogenic belt and it belongs to the southeast of upper Yangtze region. The major sedimentary formations are from Cambrian to Silurian and there are many Pb-Zn deposits along Hongyanxi fracture with northeast strike. These Pb-Zn deposits are in the limestone of Tongzi Formation and Honghuayuan Formation of Ordovician period. Firstly, this paper used stratum, rock and tectonic feature to characterize stratum, rock and tectonic feature about the Pb-Zn mine, found out the metallogenic geological background and qualification, and summarized the metallogenic law. This study also analyzed the forming mechanisms of the storm deposit in Tongzi Formation, bioherm limestone in Honghuayuan Formation, crazing construction in Baota Formation and turbidities of far source in Xintan Formation. So the model of Ordovician-Silurian sedimentary tectonic evolution was built, which was from passive continental margin (extensional system) to foreland basin (compressional system). Secondly, this paper investigates the connection between fracture and Pb-Zn deposits, and found out the faults strike to northeast and north-north-east are the ore-transmission structures, and those pointing to northwest are ore-hosting structures. Also the form of metallogenic environment of Pb-Zn deposit from aspect of fluid inclusion was discussed. The results show the mineralizing hydrothemal is similar to the hot brine in the basin, which is originally coming from interlayer and meteoric water. Finally, the Pb-Zn metallogenic model was built.

Key words： Ordovician Silurian evolution model sedimentary-tectonic Pb-Zn metallogenesis Hongxiyan area of Hunan

收稿日期: 2015-12-25

中图分类号:

P611

基金资助:中国地质调查局“湖南1∶5万召市镇、红岩溪镇、咱果坪、洗车河幅区域地质矿产调查(编号: 1212011220510)”和“湖南1∶5万尹家溪、溪口、三岔村幅区域地质矿产调查(编号: 12120114066201)”项目联合资助

作者简介: 梁恩云(1983—),男,工程师,主要从事区域地质矿产调查、矿产勘查工作。Email: 8832188@163.com。

引用本文:

梁恩云, 刘伟, 刘耀荣, 黄乐清, 刘庚寅, 彭能立, 曹解华. 关于湘西北红岩溪地区沉积-构造-成矿研究的一些认识[J]. 中国地质调查, 2016, 3(4): 29-36.
LIANG Enyun, LIU Wei, LIU Yaorong, HUANG Leqing, LIU Gengyin, PENG Nengli, CAO Jiehua. Research on sedimentary tectonic metallogenic of Hongyanxi area in the northwest Hunan. , 2016, 3(4): 29-36.

链接本文:

http://114.242.223.217/CN/ 或 http://114.242.223.217/CN/Y2016/V3/I4/29

[1] 陈富文,潘仲芳,魏道芳,等.湘西鄂西成矿带岩金矿床区域成矿规律[J].矿床地质,2010,29(S):911-912.
[2] 梁恩云,刘伟,彭能立,等.湘西北地区奥陶系铅锌矿化围岩的地球化学特征[J].桂林理工大学学报,2015,35(4):694-700.
[3] 刘文均,郑荣才.花垣铅锌矿床成矿流体特征及动态[J].矿床地质,2000,19(2):173-181.
[4] 鲍正襄,万榕江,包觉敏.湘西北菱锌矿床地质特征及形成机制[J].湖南冶金,2001(1):24-27.
[5] 芮宗瑶,叶锦华,张立生,等.扬子克拉通周边及其隆起边缘的铅锌矿床[J].中国地质,2004,31(4):337-346.
[6] 刘钟伟.湖南省大型矿床成矿大地构造背景——以湘西北湘南为例[J].国土资源导刊,2006,3(3):46-51.
[7] 付胜云,彭志刚,刘红梅.湘西北铅锌矿带成矿地质特征[J].国土资源导刊,2006,3(3):99-103.
[8] 付胜云.湘西铅锌矿富矿成矿规律探讨[J].有色金属(矿山部分),2011,63(6):27-35.
[9] 杨绍祥,余沛然,劳可通.湘西北地区铅锌矿床成矿规律及找矿方向[J].国土资源导刊,2006,3(3):92-98.
[10] 杨绍祥,劳可通.湘西北铅锌矿床碳氢氧同位素特征及成矿环境分析[J].矿床地质,2007,26(3):330-340.
[11] 杨绍祥,劳可通.湘西北铅锌矿床的地质特征及找矿标志[J].地质通报,2007,26(7):899-908.
[12] 钟九思,毛昌明.湘西北密西西比河谷型铅锌矿床特征及成矿机制探讨[J].国土资源导刊,2007,4(6):52-56.
[13] 匡文龙,刘新华,陈年生,等.湘西北下光荣矿区铅锌矿床主要地球化学特征[J].地质科学,2008,43(4):685-694.
[14] 周厚祥,谢文安.湘西北地区第五个铅锌矿田雏议[J].国土资源导刊,2008,5(5):54-56.
[15] 雷义均,戴平云,段其发,等.鄂西-湘西北地区铅锌矿矿源层对铅锌矿床产出定位的制约[J].桂林理工大学学报,2013,33(1):1-6.
[16] 刘宝珺,许效松,潘杏南,等.中国南方古大陆沉积地壳演化与成矿[M].北京:科学出版社,1993:9-134.
[17] 周名魁,王汝植,李志明.中国南方奥陶-志留纪岩相古地理与成矿作用[M].北京:地质出版社,1993:20-55.
[18] 湖南省地质矿产局.湖南省区域地质志[M].北京:地质出版社,1988:523-618.
[19] 刘恩山,李三忠,金宠,等.雪峰陆内构造系统燕山期构造变形特征和动力学[J].海洋地质与第四纪地质,2010,30(5):63-74.
[20] 冯向阳,孟宪刚,邵兆刚,等.雪峰山陆内造山带变形特征及挤压推覆-伸展滑脱构造的物理模拟[J].地球学报,2001,22(5):419-424.
[21] 张进,马宗晋,杨健,等.雪峰山西麓中生代盆地属性及构造意义[J].地质学报,2010,84(5):631-650.
[22] 汪昌亮,颜丹平,张冰,等.雪峰山西部中生代厚皮逆冲推覆构造样式与变形特征研究[J].现代地质,2011,25(6):1021-1031.
[23] 戎嘉余,陈旭.华南晚奥陶世的动物群分异及生物相、岩相分布模式[J].古生物学报,1987,26(5):507-535.
[24] 王志浩,伯格斯特龙S M,莱恩H R.中国奥陶纪牙形刺分区和生物地层[J].古生物学报,1996,35(1):26-59.
[25] Rodder E,Bodnar R J.Geologic pressure determination from fluid inclusion studies[J].Ann.Rev.Earth Planet.Sci.,1980(8):263-301.
[26] 刘英超,侯增谦,杨竹森,等.密西西比河谷型(MVT)铅锌矿床:认识与进展[J].矿床地质,2008,27(2):253-264.
[27] 段其发,曹亮,曾健康,等.湘西花垣矿集区狮子山铅锌矿床闪锌矿Rb-Sr定年及地质意义[J].地球科学:中国地质大学学报,2014,39(8):977-986,999.