1:25000沟系沉积物地球化学测量方法有效性探讨——以东昆仑巴隆地区为例
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摘要
青海东昆仑地区是青海省重要的金、铜、铁多金属成矿区,1∶250 000、1∶50 000水系沉积物地球化学测量工作在该区域圈定了众多的异常区,但总体查证程度偏低。为实现该区域找矿重大突破,选定巴隆地区部署开展了以采集水系沉积物为主、残坡积岩屑物质为辅的1∶25 000沟系沉积物地球化学测量工作,取得了较为突出的找矿效果。该项工作表明,在青海省东昆仑地区,1∶25 000沟系沉积物地球化学测量方法是一种有效的地质找矿工作手段。该方法能有效克服东昆仑地区北部水系不发育、风成物干扰严重,南部高山区碎石流发育、影响水系沉积物汇聚等因素对找矿的干扰,相对传统的地质找矿方法在异常查证过程中的适用性、可操作性更强,找矿效果好,能实现矿体的精确定位,对东昆仑的地质找矿工作具有借鉴作用。
The east Kunlun area is an important polymetallic metallogenic zone of gold, copper and iron in Qinghai province. There has delineated numerous abnormal areas by 1∶250 000 and 1∶50 000 geochemical exploration of water system sediments, but the overall level of verification is low. In order to achieve a breakthrough in prospecting of this area, we selected Balong area to deploy 1∶25 000 sulcus sediments geochemical survey by taking the collection of water system sediments as the main, residual rock debris as the supplement and achieved good prominent prospecting effect. This work shows that the 1:25 000 sulcus sediments geochemical survey method is an effective geological prospecting method in the east Kunlun area of Qinghai province. The method can effectively overcome the disturbance of undeveloped river system with the aeolian in the north Kunlun and sediment aggregation influenced by developed rock debris flow in the southern Kunlun mountains. Compared with the traditional geological prospecting method, the applicability and operability of this method in the process of anomaly verification is stronger. The ore finding effect is good, and the accurate location of ore body can be realized, which has a guiding function for the geological prospecting work in east Kunlun.
The east Kunlun area is an important polymetallic metallogenic zone of gold, copper and iron in Qinghai province. There has delineated numerous abnormal areas by 1∶250 000 and 1∶50 000 geochemical exploration of water system sediments, but the overall level of verification is low. In order to achieve a breakthrough in prospecting of this area, we selected Balong area to deploy 1∶25 000 sulcus sediments geochemical survey by taking the collection of water system sediments as the main, residual rock debris as the supplement and achieved good prominent prospecting effect. This work shows that the 1:25 000 sulcus sediments geochemical survey method is an effective geological prospecting method in the east Kunlun area of Qinghai province. The method can effectively overcome the disturbance of undeveloped river system with the aeolian in the north Kunlun and sediment aggregation influenced by developed rock debris flow in the southern Kunlun mountains. Compared with the traditional geological prospecting method, the applicability and operability of this method in the process of anomaly verification is stronger. The ore finding effect is good, and the accurate location of ore body can be realized, which has a guiding function for the geological prospecting work in east Kunlun.
引文
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[10] 杨少平,刘华忠,孔牧,等.羌塘高原典型矿区水系沉积物地球化学特征与区域化探扫面方法[J].地球学报,2015,36(3):367-376.YANG S P,LIU H Z,KONG M,et al.Geochemical characteristics of stream sediments and regional geochemical survey methods in the Qiangtang plateau[J].Acta Geoscientica Sinica,2015,36(3):367-376.(In Chinese)
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[12] 刘俊斌.用1/25 000不规则网直接查证1/200 000化探异常的尝试[J].吉林地质,2012,31(2):80-83.LIU J B.Directly verify 1∶200 000 geochemical anomalies by 1∶250 00 irregular network[J].Jilin Geology,2012,31(2):80-83.(In Chinese)
[2] 胡正国,刘继庆,钱壮志,等.东昆仑区域成矿规律分析——关于找矿工作的战略思考[J].西安工程学院学报,1999,21(4):46-50.HU Z G,LIU J Q,QIAN Z Z,et al.Analysis of regional metallogenic regularity in east Kunlun——Strategic thinking about ore finding work[J].Journal of Xian Engineering University,1999,21(4):46-50.(In Chinese)
[3] 陈树云,伊有昌,吴小霞,等.青海东昆仑东段区域成矿地质特征及金属矿产找矿方向研究[J].黄金科学技术,2007,15(4):9-17.CHEN S Y,YI Y C,WU X X,et al.East Qinghai east Kunlun Mountains the section region mineralization geological feature and the metal minerals prospecting direction research[J].Gold Science and Technology,2007,15(4):9-17.(In Chinese)
[4] 田承盛.东昆仑中段五龙沟矿集区金矿成矿作用及成矿预测研究[D].北京:中国地质大学,2012.TIAN C S.Research on gold mineralization and metallogenic prognosis in Wulonggou ore concentration areas of east Kunlun middle part[D].Beijing:China University of Geosciences,2012.(In Chinese)
[5] 许光,李明喜,任智斌.青海省矿产资源潜力评价地球化学资料应用研究报告[R].青海省地质矿产勘查开发局,2013.XU G,LI M X,REN Z B.The geochemical research report of Qinghai province mineral resources potential evaluation[R].Bureau of Geology and Mineral Exploration and Development of Qinghai Province,2013.(In Chinese)
[6] 马文,贾建团,胡兰基,等.青海省格尔木市南-瓦严哈拉一带1∶2.5万地球化学测量可行性研究探讨[J].青海国土经略,2015(4):56-58.MA W,JIA J T,HU L J,et al.Feasibility study of 1:25 000 stream sediment survey to Wayanhala area in south Golmud of Qinghai province[J].Management & Strategy of Qinghai Land & Resources,2015(4):56-58.(In Chinese)
[7] 王富春,王贵仁.1∶25 000水系沉积物测量在柴达木周边地区金矿找矿工作中的应用及其效果[J].青海地质,2001(S1):36-40.WANG F C,WANG G R.Application of 1∶25 000 stream sediment survey to gold-prospecting around Qaidum basin and its effect[J].Qinghai Geology,2001(S1):36-40.(In Chinese)
[8] 周晓中,陈玉华,石云海,等.1∶25 000沟系岩屑测量的找矿效果和工作方法探讨[J].矿产勘查,2011,2(2):154-158.ZHOU X Z,CHEN Y H,SHI Y H,et al.1∶25000 debris survey of the valley system and working methods of prospecting effect[J].Mineral Exploration,2011,2(2):154-158.(In Chinese)
[9] 谢学锦,任天祥,奚小环,等.中国区域化探全国扫面计划卅年[J].地球学报,2009,30(6):700-716.XIE X J,REN T X,XI X H,et al.The implementation of the regional geochemistry-national reconnaissance program (RGNR) in China in the past thirty years[J].Acta Geoscientica Sinica,2009,30(6):700-716.(In Chinese)
[10] 杨少平,刘华忠,孔牧,等.羌塘高原典型矿区水系沉积物地球化学特征与区域化探扫面方法[J].地球学报,2015,36(3):367-376.YANG S P,LIU H Z,KONG M,et al.Geochemical characteristics of stream sediments and regional geochemical survey methods in the Qiangtang plateau[J].Acta Geoscientica Sinica,2015,36(3):367-376.(In Chinese)
[11] 陈国光,张华,叶家瑜,等.地球化学普查规范(1∶50 000) DZ/T0011-2015 [S].中华人民共和国国土资源部,北京.CHEN G G,ZHANG H,YE J Y,et al.Specification of geochemical reconnaissance survey(1∶50 000) DZ/T0011-2015 [S].Ministry of land and resources of People's Republic of China,Beijing.(In Chinese)
[12] 刘俊斌.用1/25 000不规则网直接查证1/200 000化探异常的尝试[J].吉林地质,2012,31(2):80-83.LIU J B.Directly verify 1∶200 000 geochemical anomalies by 1∶250 00 irregular network[J].Jilin Geology,2012,31(2):80-83.(In Chinese)