研究论文

青藏高原特种盐湖与深部火山-地热水的相关性

  • 雒洋冰 ,
  • 郑绵平 ,
  • 任雅琼
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  • 中国地质科学院矿产资源研究所, 国土资源部盐湖资源与环境重点实验室, 北京 100037
雒洋冰,博士,研究方向为盐湖学与盐类矿床地质,E-mail:luoyangbing0319@126.com

收稿日期: 2017-02-10

  修回日期: 2017-04-22

  网络出版日期: 2017-07-03

基金资助

国家自然科学基金联合重点基金项目(U1407027);中国地质调查局地质大调查项目(1212011085524)

Metallogenic correlation of special salt lake and hydrotherm,QinghaiTibet Plateau,China

  • LUO Yangbing ,
  • ZHENG Mianping ,
  • REN Yaqiong
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  • MLR Key Laboratory of Saline Lake Resources and Environments, Institute of Mineral Resources, CAGS, Beijing 100037, China

Received date: 2017-02-10

  Revised date: 2017-04-22

  Online published: 2017-07-03

摘要

青藏高原特种盐湖形成于陆-陆碰撞带,高原深部熔融物质,自第三纪形成始至第四纪时期以来,以火山-地热水形式向上地壳表层携出大量B、Li、Cs等成分。昂拉陵地区是青藏高原盐湖特殊组分Li、B、K、Cs、Rb含量最高的区域,郑绵平等首次在该区域发现中新世火山-沉积二元结构,火山后期与热液活动成为青藏高原盐湖特殊组分的主要来源。青藏高原第四纪地热水分布广泛,全区由南往北划分为5条地热带,其中狮泉河-雅鲁藏布地热带(I)、班公湖-怒江地热带(II)、贵德-南祁连地热带(IV),地热水中富含B、Li、Cs、Rb、As,这3条地热带周围分布的盐湖中也富集这些元素。青藏高原特种盐湖中B、Li、Cs、Rb、As等元素含量,湖泊水化学带、地热带的特征系数,Rb/Cs、Ni/Co系数以及同位素值,与一般盐湖、海水中不同,而与该区域地热水中相同;同时,特种盐湖水化学特征与地热带中特征具有较好的对应关系。青藏高原盐湖各补给水源中地热水的Li、B、K、Rb、Cs元素含量最高。综上表明,青藏高原特种盐湖中富集的Li、B、Cs等元素,与火山-地热水具有很高的相关性。

本文引用格式

雒洋冰 , 郑绵平 , 任雅琼 . 青藏高原特种盐湖与深部火山-地热水的相关性[J]. 科技导报, 2017 , 35(12) : 44 -48 . DOI: 10.3981/j.issn.1000-7857.2017.12.006

Abstract

The Qinghai-Tibet plateau special salt lakes are formed in the collision zone between two continental plates.The deep molten material of the Qinghai-Tibet plateau,since the tertiary formation and quaternary period,enjoys its unique composition (B,Li,Cs,As,K) diffused to upper crust surface in the form of hot water.The salt lakes in the Huan'ang area contain the highest contents of B,K,Cs,Rb in the Qinghai-Tibet plateau.Zheng et al.for the first time found the Miocene volcanic sedimentary dual structure,with the volcanic and hydrothermal activities as the main source of the Qinghai-Tibet plateau special components in the salt lake.The hot water in the QinghaiTibet plateau is widely distributed,the tropical geothermal water from south to north is divided into five kinds.The hot water in the tropical Shiquan river-Brahmaputra and the tropical Bangonghu-Nujiang and Guide-south Qilian,is rich in B,Li,Cs,Rb,and As.The salt lakes distributed surrounding these three tropical regions are also rich in these elements.The contents of Li,Cs,Rb,As and U elements,the chemical characteristics of the lake and ground water,the Rb/Cs and Ni/Co coefficients and the isotopic values in special salt lakes are different from those in the general salt lake and sea water,but are the same as those of the geothermal water in this area.At the same time,the water chemical characteristics of special salt lake and hot waters have a good corresponding relation.All water supplies of the QinghaiTibet plateau salt lake and hot water contain the highest level of Li,B,K,Rb and Cs elements.In conclusion,the Qinghai-Tibet Plateau special salt lakes are rich in Li,K and B elements and have a high correlation with the geothermal water.

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