地质学报Issue(6)：60-73,14.
新疆罗布泊盐湖深部钾盐找矿新进展
New Progress of Potassium Prospecting in Deep Salt Lake of Lop Nur Region in Xinjiang
摘要
Abstract
LopNur lake is one of the largest dry salt lakes in the world.Since Lop Nur.is discovered in 1995, potassium prospecting,survey,systematic research,exploitation and utilization has been developed to the huge potassium ore.The potash resources in shallow layer (less than 200m)have been investigated. However,no deep quaternary geological well has ever been drilled in the region.From comparison with west Chaidamu basin in climate condition,saline mineral distribution and brine reservoir in clastic stratum, in combination with the brine reservoir discovery in graben fault depression,the paper proposes that the deep stratum in Lop Nur has potassium prospecting.The deep potash resources are investigated in Northwest Luobei depression of Lop Nur.And the first deep well (well LDK01)to prospect potassium in Lop Nur lake is implemented, in which potassium mineral including glaserite, Kalistrontite and erythrosiderite are discovered for the first time.The potassium mineral including sylvite,carnallite etc. are discovered in deep clastic stratum,in which the maximum proportion of KCL is 2.86%,which reveals that low grade solid potash resources are reserved in deep stratum.A new type of potassium mineral, clastic potassium is discovered,which expand orientation and space for potassium prospecting in Lop Nur. The average grade of KCL in deep clastic stratum is 1.5%,which reveals that there is potassium-rich brine in deep Lop Nur lake.Gravity detecting found that secondary depression is developed in west Lop Nur basin.it’s preliminary estimated that the quaternary sedimentary thickness is more than 1200m.From geological analysis,it ’s predicted that the fault basin in front of Kuruketag mountain and Luobei depression are key target for deep potassium prospecting.In combination of remote sensing,geophysical and physical property data,it’s estimated that the potash resources in deep Luobei depression can be up to 160million ton.The paper also proposes that rich potash resources are reserved in deep stratum in west of Luobei depression and surrounding region.There is large potash potential in deep Lop Nur lake.This discovery has important significance for further studying the formation and evolution of Lop Nur lake and large scale of potash production for potash fertilizer enterprise.关键词
新疆罗布泊/LDK01井/固体钾盐/富钾卤水/深部找钾Key words
Lop Nur ,Xinjiang/LDK01 well/solid potash/potassium-rich brine/potassium prospecting in deep stratum引用本文复制引用
焦鹏程,刘成林,颜辉,陈永志,顾新鲁,孙小虹,宣之强,赵海彤,李文学..新疆罗布泊盐湖深部钾盐找矿新进展[J].地质学报,2014,(6):60-73,14.基金项目
本文为国家自然科学重点基金项目（编号40830420）、国投新疆罗布泊钾盐有限责任公司资助项目成果。 （）
