| 西伯利亚涅帕钾盐矿床地质,发展经过及其对我国找钾工作的启示 |
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| 引用本文：刘群.1995.西伯利亚涅帕钾盐矿床地质,发展经过及其对我国找钾工作的启示[J].地球学报,16(1):45-54. |
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| 中文摘要:西伯利亚含盐盆地位于西伯利亚地台。含钾盐系属下寒武统安加拉组，岩盐层总厚６００余米，钾盐层厚７０－１５０ｍ，共有钾石盐岩和钾石盐－光卤石岩６层。钾石盐层中ＫＣｌ含量达３５％－４５％，Ｍｇｃｌ＿２和水不溶物含量均小于１％，含盐盆地四周以堡礁带和陆岛与广海相隔，含钾坳陷处于地台上坳陷最深部位。作者介绍了涅帕钾盐矿床的地质特征和形成条件，从钾盐预测－钾盐普查－发现钾盐矿床历经４０余年，在找钾工作中总结了大量的成功经验，对我国地质工作者如何寻找钾盐矿床是一种很好的启示。 |
| 中文关键词:钾盐矿床 西伯利亚涅帕 |
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| Geology and Discovery Process of the Nepa Potash Deposit in Siberia and Enlightenment for Potash-Searching Work in China |
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| Abstract:This paper provides a brief introduction to the geological characteristics and formation conditionsof the Nepa Potash Depeit in Siberia.The Siberian salt-bearing basin is situated on the Siberian Plat-form,with an area of 2.5 million km￣2, including a potassium-bearing depression of 2000 km￣2.The potassium-bearing series belongs to the Lower Cambrian Angara suite,with rock salt bedsmore then 6 00m and potash beds 7 0-150m in thickness.The potash sequence has six sylvinite-car-nallite horizons.Sylvinite beds carry 35%-45%KCl and<1%either MgCl_2 or insoluble residues.The salt-bearing basin is separated from the open sea by the surrounding reefs and old-lands.Thepotassium-bearing depression is the deepest region on the platform.Searching for potash deposits in Siberia began in the fifties of the century. The geologists made alot of basic geological paleotectonic,lithofacies-plaeogeographical,geochemical,hydrochemical andgeophysical studies.During 1963-1973 the drilled footage for seeking potash amounted to 100 thout-hand meters.At last the biggest potash deposit in the world──the Nepa Potash deposit was found atthe end of the seventies. The search for potash had losted more then 30 years.From above it can be seen that the search for potash deposits requires protracted and arduous en-deavour. |
| keywords:Potash deposit the Nepa in Siberia |
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