云南杨梅田Cu-Pb-Zn多金属矿床构造叠加晕特征及矿床成因探讨
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摘要
保山地块位于三江特提斯构造域中南段,伴随多次构造转换,地块内发生了从早古生代到中—新生代的多次花岗岩体侵入活动,使得该区形成了复杂而独具特色的成矿系统,成为我国重要的铁-铜-铅-锌-银-汞-锡-稀有金属矿集区。杨梅田铜铅锌多金属矿床位于保山地块西南部,矿床赋矿地层为上奥陶统,矿体呈脉状、透镜状产出于层间断层破碎带中,矿体与围岩界面清楚,产状与地层基本一致。通过开展构造叠加晕测量工作,指示元素分带序列出现异常,加之同一个矿体矿石中金属矿物组合复杂,反映了矿床的形成为多期、多阶段叠加的结果。杨梅田矿床为一受构造与岩性共同控制的沉积—改造型热液矿床。
Baoshan block is located in the middle and south section of Sanjiang Tethys tectonic domain.With many tectonic transformations,many intrusive activities of granite bodies occurred in the block from Early Paleozoic to Mesozoic-Cenozoic,resulting in the formation of a complex and unique metallogenic system and became an important Fe-Cu-Pb-Zn-Ag-Hg-Sn-Rare ore concentration area in China.Yangmeitian Cu-Pb-Zn polymetallic deposit is located in the southwest of Baoshan block.The ore-hosting stratum of the deposit is Upper Ordovician.The orebody occurs in the interlayer fault fracture zone in vein and lenticular shape.The interface between the orebody and the surrounding rock is clear and the occurrence is basically the same as the stratum.By conducting the measurement of tectonic superimposed halos,there was an anomaly in the zoning sequence of the indicator elements.In addition,the complex assemblage of metallic minerals in the same ore body reflected the formation of the deposit as a result of multi-stage and multi-stage superposition.The deposit is a sediment-hydrothermal alteration deposit controlled by structure and lithology.
Baoshan block is located in the middle and south section of Sanjiang Tethys tectonic domain.With many tectonic transformations,many intrusive activities of granite bodies occurred in the block from Early Paleozoic to Mesozoic-Cenozoic,resulting in the formation of a complex and unique metallogenic system and became an important Fe-Cu-Pb-Zn-Ag-Hg-Sn-Rare ore concentration area in China.Yangmeitian Cu-Pb-Zn polymetallic deposit is located in the southwest of Baoshan block.The ore-hosting stratum of the deposit is Upper Ordovician.The orebody occurs in the interlayer fault fracture zone in vein and lenticular shape.The interface between the orebody and the surrounding rock is clear and the occurrence is basically the same as the stratum.By conducting the measurement of tectonic superimposed halos,there was an anomaly in the zoning sequence of the indicator elements.In addition,the complex assemblage of metallic minerals in the same ore body reflected the formation of the deposit as a result of multi-stage and multi-stage superposition.The deposit is a sediment-hydrothermal alteration deposit controlled by structure and lithology.
引文
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[10]聂飞,董国臣,莫宣学,等.云南保山西邑铅锌矿床硫铅同位素地球化学特征研究[J].岩石学报,2015,31(5):1327-1334.
[11]邓明国,赵剑星,刘凤祥,等.滇西镇康水头山Pb-Zn矿床成矿流体及矿质来源探讨—H、O、S、Pb同位素地球化学证据[J].岩石学报,2017,33(7):2001-2017.
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[16]李文昌,潘桂堂,候增谦,等.西南“三江”多岛弧盆—碰撞造山成矿理论与勘查技术[M].北京:地质出版社,2010:1-490.
[17]YE Lin,GAO Wei,CHENG Zengtao,et al.LA-ICP-MS Zircon U-Pb geochronology and petrology of the Muchang Alkali Granite,Zhenkang County,western Yunnan Province,China[J].Acta Geologica Sinica(English Edition),2010,84(6):1488-1499.
[18]聂飞,董国臣,莫宣学,等.滇西昌宁—孟连带三叠纪花岗岩地球化学、年代学及其意义[J].岩石学报,2012,28(5):1465-1476.
[19]董美玲,董国臣,莫宣学,等.滇西保山地块中—新生代岩浆作用及其构造意义[J].岩石学报,2013,29(11):3901-3913.
[20]廖世勇,王冬兵,唐渊,等.“三江”云龙锡(钨)成矿带晚白垩世二云母花岗岩LA-ICP-MS锆石U-Pb定年及其地质意义[J].岩石矿物学杂志,2013,32(4):450-462.
[21]禹丽,李龚健,王庆飞,等.保山地块北部晚白垩世岩浆岩成因及其构造指示:全岩地球化学、锆石U-Pb年代学和Hf同位素制约[J].岩石学报,2014,30(9):2709-2724.
[22]邓军,王长明,李龚健.三江特提斯叠加成矿作用样式及过程[J].岩石学报,2012,28(5):1349-1361.
[23]邓军,王长明,李文昌.三江特提斯复合造山与成矿作用研究态势及启示[J].地学前缘,2014b,21(1):52-64.
[2]董美玲,董国臣,莫宣学,等.滇西保山地块早古生代花岗岩类的年代学、地球化学及意义[J].岩石学报,2012,28(5):1453-1464.
[3]陶琰,胡瑞忠,朱飞霖,等.云南保山核桃坪铅锌矿成矿年龄及动力学背景分析[J].岩石学报,2010,26(6):1760-1772.
[4]杨玉龙,叶霖,程增涛,等.保山镇康地块矽卡岩型铅锌矿床成因初探[J].岩石矿物学杂志,2012,31(4):554-564.
[5]黄华,张长青,周云满,等.云南保山金厂河铁铜铅锌多金属矿床Rb-Sr等时线测年及其地质意义[J].矿床地质,2014,33(1):123-136.
[6]邓明国,陈伟,王学武,等.滇西芦子园远程矽卡岩Pb-Zn-Fe(Cu)多金属矿床流体包裹体初探及矿床成因探讨[J].岩石学报,2018,34(5):1239-1257.
[7]李志群,陈耀光,张泰身,等.云南勐糯铅锌矿的成矿地质特征和资源接替[J].地质找矿论丛,2005,20(2):123-131.
[8]肖昌浩.三江中南段低温热液矿床成矿系列研究[D].北京:中国地质大学,2013:1-153.
[9]张权,赵飞,高林.云南镇康县放羊山铅锌多金属矿床成矿特征及找矿方向[C]//王峰,韩润生,汪贻水.矿山地质理论与实践创新—全国生产矿山提高资源保障与利用效益及深部找矿成果交流会.长沙:中南大学出版社,2013:104-108.
[10]聂飞,董国臣,莫宣学,等.云南保山西邑铅锌矿床硫铅同位素地球化学特征研究[J].岩石学报,2015,31(5):1327-1334.
[11]邓明国,赵剑星,刘凤祥,等.滇西镇康水头山Pb-Zn矿床成矿流体及矿质来源探讨—H、O、S、Pb同位素地球化学证据[J].岩石学报,2017,33(7):2001-2017.
[12]赵发,赵喷.云南省龙陵县杨梅田铜矿成矿地质特征及找矿潜力分析[J].云南冶金,2010,39(4):9-12.
[13]王远高,张权,陶猛,等.云南龙陵县杨梅田铜铅锌矿床成矿地质特征及成因分析[J].资源信息与工程,2017,32(6):28-29.
[14]DENG J,WANG Q F,LI G J.Tethys tectonic evolution and its bearing on the distribution of important mineral deposits in the Sanjiang region,SW China[J].Gondwana Research,2014a,26(2):419-437.
[15]杨学俊,贾小川,熊昌利,等.滇西高黎贡山南段公养河群变质基性火山岩LA-ICP-MS锆石U-Pb年龄及其地质意义[J].地质通报,2012,31(2/3):264-276.
[16]李文昌,潘桂堂,候增谦,等.西南“三江”多岛弧盆—碰撞造山成矿理论与勘查技术[M].北京:地质出版社,2010:1-490.
[17]YE Lin,GAO Wei,CHENG Zengtao,et al.LA-ICP-MS Zircon U-Pb geochronology and petrology of the Muchang Alkali Granite,Zhenkang County,western Yunnan Province,China[J].Acta Geologica Sinica(English Edition),2010,84(6):1488-1499.
[18]聂飞,董国臣,莫宣学,等.滇西昌宁—孟连带三叠纪花岗岩地球化学、年代学及其意义[J].岩石学报,2012,28(5):1465-1476.
[19]董美玲,董国臣,莫宣学,等.滇西保山地块中—新生代岩浆作用及其构造意义[J].岩石学报,2013,29(11):3901-3913.
[20]廖世勇,王冬兵,唐渊,等.“三江”云龙锡(钨)成矿带晚白垩世二云母花岗岩LA-ICP-MS锆石U-Pb定年及其地质意义[J].岩石矿物学杂志,2013,32(4):450-462.
[21]禹丽,李龚健,王庆飞,等.保山地块北部晚白垩世岩浆岩成因及其构造指示:全岩地球化学、锆石U-Pb年代学和Hf同位素制约[J].岩石学报,2014,30(9):2709-2724.
[22]邓军,王长明,李龚健.三江特提斯叠加成矿作用样式及过程[J].岩石学报,2012,28(5):1349-1361.
[23]邓军,王长明,李文昌.三江特提斯复合造山与成矿作用研究态势及启示[J].地学前缘,2014b,21(1):52-64.