摘要
荒田铅锌矿床位于官厅铅锌成矿带,其矿体赋存于下二叠统玄武岩组中段下层P1β2-1与茅口组上段P1m2之间的玄武质、灰质角砾岩层中,常富集在背斜的两翼和向斜的槽部,严格受层位、岩性和褶皱构造的控制。矿床与晚二叠世海相基性岩浆喷发有关,后经火山沉积-岩浆期后热液叠加以及多期次构造运动对成矿物质的改造富集。故矿床应属火山沉积-岩浆期后热液叠加-层控矿床。
Huangtian Pb-Zn deposit is situated in Guanting Pb-Zn metallogenic belt,and its orebody occurs in the basaltic and gray breccia layer between the lower layer of middle Basalt Formation(P1β2-1)and the upper Maokou Formation(P1m2)in lower Permian system.The orebodies mainly enrich in the two limbs of the anticline and the trough of the syncline and are strictly controlled by horizon,lithology and fold structure.The deposit is related to marine basic magma eruption of late Permian Epoch.Afterwards,ore-forming materials are reworked and enriched by volcanic sedimentarypostmagmatic hydrothermal superposition and multiphase tectonic activities.Therefore it is believed that the deposit is a volcanic sedimentary-postmagmatic hydrothermal superposed-stratabound deposit.
引文
[1]陈超,曹晓峰,王玉奇,等.扬子地台周缘铅锌矿成矿特征及成矿规律[J].资源环境与工程,2010,24(4):333-340.
[2]张长青,毛景文,吴锁平,等.川滇黔地区MVT铅锌矿床分布、特征及成因[J].矿床地质,2005,24(3):336-348.
[3]秦德先,高建国.滇中铅锌矿地质研究[M].昆明:云南科学技术出版社,1998:1-110.
[4]张志斌,李朝阳,涂光炽,等.川、滇、黔接壤地区铅锌矿床产出的大地构造演化背景及成矿作用[J].大地构造与成矿学,2006,30(3):345-354.
[5]许东,蒋成兴,王建飞.云南石屏大冷山-建水虾洞铅锌银矿找矿远景[J].云南地质,2009,28(3):243-249.
[6]张宝林,李晓利,沈晓丽,等.采用大深度电法勘探技术组合圈定云南省建水官厅铅锌银矿带西段的控矿构造[J].矿物学报,2013(增刊1):986-987.
[7]舒培华,杨俊,张艳韬.建水虾洞铅锌银多金属矿床成因新解[J].云南地质,2012,31(4):453-455.
[8]孟志勇,李蓬博,马安妮.云南建水荒田铅锌矿床成因分析[J].云南地质,2013,32(4):426-428.
[9]李国武,杨光斌,杨学广.云南建水荒田-虾洞火山岩型银多金属矿带的硫、铅同位素特征及其地质意义[J].地质地球化学,1998,26(4):21-26.
[10]周伟家,陈凤艳,谭兆波,等.云南建水荒田铅锌矿控矿因素[J].云南地质,2010,29(1):41-44.
[11]刘强.滇东南大冷山-虾洞铅锌成矿带地质特征及找矿方向[J].企业技术开发,2009,28(11):47-50.