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积极加强普查找矿工作,保証足够的后备勘探基地,是地質勘探部門的一項重要任务。这也是我們五年来地質勘探工作中的基本經驗教訓之一。但是如何根据各地区不同的地質条件(包括新区普查、情报地的檢查、生产或勘探矿区外圍的普查),采取相应的普查方法和手段,目前还缺乏一套比較完整的經驗。很多單位在認識上还存在着不同的看法,实际作法也各有利弊。我們認为,系統地总結研究这一方面的成功經驗,对提高普查找矿效果,及时解决后备勘探基地問題具有普遍实际意义。为此,現將任桂荣同志根据东北地区的情况所提出的个人意見予以发表,欢迎大家根据本地(矿)区的具体情况,就此廣泛发表意見,介紹你們的經驗和作法,以进一步加强普查找矿工作,促进技术水平的提高。 相似文献
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The geology, of the southeastern part or Hupei has been studied by Mr. Seijirro Noda of the Japanese Geographical Society in 1912. A geological map in the scale of 1:400,000 was prepared by him, covering the districts Ta Yeh, Yang Sing, O Cheng and Wu Chang. Mr. Noda classified the sedimentary rocks into the following series: 相似文献
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Opinions often differ among coal petrographers as to the relative ad-vantages of the thin sections and the polished sections.In reality both of themare useful and they should be used simultaneously in order to get a clear and 相似文献
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Mr.T.F.Hou,geologist of the National Geological Survey of Chinabrought back in 1931 from Liaoning province,a specimen of subbituminous coalin which are included patches or aggregates of small oolites.This interestingspecimen was given to the writer for microscopical investigation.Both polished 相似文献
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The Western Hills of Peking are,since very remote times,well knownfor coal production and Mentoukou is one of the most productive districts amongthese hills.On account of its economic importance it was visited by several 相似文献
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Ⅰ. INTRODUCTION. Ⅱ. DISTRIBUTION OF ESTHERIA-BEARING BEDS IN CHINA. (1) Estheria of the Laiyaug Formation, in Shantung. (2) Estheria of the Kweichow Series, in Hupef. (3) Estheria of the Liupanshan Series, in Kansu. (4) Estheria of the Kienteh Series, in Chekiang. (5) Estheria of the Nengkiang Formation, in Heilnngkiang. 相似文献