| 梁轶轩,黄维平,李宝龙,陈壮,陈鹏,任强,孙继彬,岳宗元.西藏尼玛县文部地区 1∶5万水系沉积物地球化学特征及找矿方向[J].矿产勘查,2026,17(5):873-889 |
| 西藏尼玛县文部地区 1∶5万水系沉积物地球化学特征及找矿方向 |
| Geochemical characteristics and prospecting direction of 1∶50000 stream sediments in Wenbu area of Nyima County, Tibet Plateau |
| 投稿时间：2025-12-30 |
| DOI：10.20008/j.kckc.202605011 |
| 中文关键词: 水系沉积物 找矿靶区 中拉萨地块中段 特提斯成矿域 |
| 英文关键词: stream sediment prospecting target area middle Lhasa Terrane Tethys metallogenic belt |
| 基金项目:本文受自然资源部研究式调查项目“冈底斯西段陆相火山岩区斑岩-浅成低温热液成矿潜力与找矿方向”(2024ZRYJDC020)、中国地质调查项目“西藏阿里革吉地区铜金锑矿产调查与区块优选”(DD202602110102)和自然科学基金项目“大陆碰撞带含矿蚀变岩帽成因与勘查指示研究:来自明矾石标型特征的证据”(42572101)联合资助。 |
| 作者 | 单位 | | 梁轶轩 | 中国地质科学院矿产资源研究所,北京 100037 | | 黄维平 | 吉林省地质调查院,吉林长春 130021 | | 李宝龙 | 中国地质科学院矿产资源研究所,北京 100037
北方矿业有限责任公司,北京 100053
自然资源部成矿作用与资源评价重点实验室,北京 100037 | | 陈壮 | 吉林省地质调查院,吉林长春 130021 | | 陈鹏 | 北方矿业有限责任公司,北京 100053 | | 任强 | 吉林省地质调查院,吉林长春 130021 | | 孙继彬 | 吉林省地质调查院,吉林长春 130021 | | 岳宗元 | 吉林省地质调查院,吉林长春 130021 |
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| 中文摘要: |
| 拉萨地体中段的措勤—申扎一带是寻找斑岩型-矽卡岩型-浅成低温热液矿床的有利地区。近年来通过多幅 1∶5万矿产地质调查工作，在尼玛县当惹雍错西岸首次发现了陆相火山岩区浅成低温热液型金矿床。文部地区位于西藏那曲市尼玛县当惹雍错东侧，前人在该区开展了 1∶25万邦多区幅(H45C001002)化探工作，圈定了 3个乙类综合异常，显示区内具有寻找金钨锡多金属矿的潜力。为进一步明确找矿方向，本文在工区内开展 1∶5万水系沉积物地球化学测量工作，总结了区内的地球化学特征，共圈定了综合化探异常 10处，B类找矿靶区 3处。同时，研究区西侧的中拉萨地体中段浅成低温热液型鑫龙金矿和郎美拉金矿的发现，为藏北地区岩金等矿产的勘查提供了找矿方向，也增强了找矿勘查信心。本研究为当惹雍错东岸地区铜金铅锌等矿床的进一步找矿勘查工作提供了重要的化探依据。 |
| 英文摘要: |
| The Coqen-Xainza area in the middle Lhasa terrane is a favorable region for searching porphyry-skarn-epithermal deposits. In recent years, through multiple 1∶50000 mineral geological surveys, an epithermalgold deposit in a continental volcanic rocks area was first discovered on the west region of Lake Tangra Yunmco inNyima County. The working area is located in Wenbu Township, Nyima County, Nagqu City, Xizang AutonomousRegion. The geochemical exploration work of Bangduo area (H45C001002) with a scale of 1∶250000 has been car-ried out before, and three category B comprehensive anomalies have been identified. It was indicated that the areahas the potential to search for gold, tungsten and tin polymetallic deposits. In order to further clarify the prospectingdirection, the 1∶50000 stream sediment geochemical survey was recently carried out in the area. The geochemicalcharacteristics of the area were summarized, a total of 10 comprehensive geochemical anomalies and 3 Class B pros-pecting targets have been delineated. It indicated that there is a high potential for prospecting Cu, Pb, Zn and Ag.Meanwhile, the discovery of the epithermal type Xinlong gold deposit in the central section of the middle Lhasa ter-rane on the west side of the study area has bolstered confidence in prospecting and exploration. This study providesimportant geochemical exploration evidence for further prospecting and exploration work in the study area. |
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