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《International Geology Review》2012,54(7):1273-1278
Progress report deals with: 1) Geochronology — potassium-argon — principally Precambrian. Gives dates on Precambrian of Baltic Shield including eastern Sweden, Northeastern Norway, Finland, Karelia, and Kola Peninsula. Gives a correlation of the Precambrian for the entire European U.S.S.R. 2) Depth and origin of magmatic ore deposits using reconstructed erosion surfaces for the major periods of mineralization. The depth zones of ore formation of American and European theories is questioned. 3) Tectonic mapping in crustal studies. And in this conjunction 4) Bathy-metric map of the Pacific has been prepared, conspicuous features are major tectonic and volcanic forms of the ocean bottom, as well as minor detail. Brief mention is made of ore deposits from the ocean. 5) “Weathering Crust” studies of subaerial weathering erosion and deposition, mainly of ancient crusts. 6) Study on the origin and distribution of “agricultural areas”, mainly phosphates. 7) Compilation of a Manual of Minerals now underway.--M.A. Klugman. 相似文献
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《International Geology Review》2012,54(7):1310-1311
A very frank chapter-by-chapter review of a new publication. The reviewers give credit for new approaches and do not spare the author any weak sections of the book. The book should be of interest to American geologists because of the apparently concise presentation, number of examples, and the treatment of minor structures such as pores and cavities as well as the major structures usually considered. --M.A. Klugman. 相似文献
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Art. 1. This Society shall be known as the Geological Society of China. Art. 2. The object of this Society shall be the advancement of geology and its allied (?)iences. Art. 3. The membership of the Society shall consist of fellows, members, associates, corresponding members and honorary members. 相似文献
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《International Geology Review》2012,54(9):1035-1039
Among the topics covered by the 12th plenary meeting of the Commission of Geomorphology were 1) status of geomorphological research and mapping in the U.S.S.R., 2) application of geomorphology in construction and mineral prospecting, 3) geomorphological training, and 4) standardization of mapping procedures and symbolism. The plenum went on record as favoring maps based primarily on genetic classification of features.—M. Russell. 相似文献
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《International Geology Review》2012,54(6):716-721
Lomonosov is said to have implied appreciation of glaciation as a geologic process, to have proposed a system of evolution for land forms, and to have established the working concept of geographical analogy which the reviewer relates to Wegener's ideas on continental drift.--B. N. Cooper. 相似文献
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砂岩类脆性无序介质连续破坏过程的细观模拟 总被引：1，自引：0，他引：1
为了分析砂岩类无序介质在各种荷载作用下的连续破坏过程,本文提出了梁-颗粒细观模型。在此模型中,介质被离散为一系列的颗粒单元,这些颗粒单元均由弹脆性的梁单元联结。颗粒的力学行为由离散单元法和有限单元法确定。当某个梁单元所受应力超过其强度时,就随即将它从计算网络中剔除,以模拟介质的破坏行为。为了验证数值模型的可靠性,分别从破坏模式和荷载-位移曲线两方面与物理模型实验进行了对比,结果表明两者基本一致。此外,探讨了无序性对介质裂纹分布形式的影响,并用分维表述了裂纹分布与荷载强度之间的内在联系。 相似文献
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Changsintien is a station on the Peiping-Hankow railway and is situatedabout 20 km S.W.of Peiping.Further S.W.for about 15 km is the townof Tuoli where begins the Tuotsin aerial ropeway for transporting coal and at 相似文献
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《International Geology Review》2012,54(6):698-705
This tribute praises Lomonosov for his purported employment of the dialectic concept to the evolution of the earth. The claim that Lomonosov's interpretations of the earth are materialistic is absolutely true, as are all other scientific interpretations. Whether he is the father of materialism in Russian science is of little importance because all sound science is materialistic. Twelve partly substantiated claims about Lomonosov's work are summarized. The statements that he first applied historical analysis to explain geologic phenomena and that he established the principle of actualism 70 years before LyeII should be brought to the attention of those unfamiliar with the contributions of the great Russian scientist. The tribute contains a good bibliography.--B. N. Cooper. 相似文献
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P. E. LAGERHJEIM 《地质学报》1930,9(4):383-400
The electrical investigation of the earth's crust is made possible mainly by the differences in the electrical conductivity that exists between different rocks and rock formations. It is therefore of great importance to know the 相似文献
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Changsintien is a station on the Peiping-Hankow railway and is situatedabout 20 km S.W.of Peiping.Further S.W.for about 15 km is the townof Tuoli where begins the Tuotsin aerial ropeway for transporting coal and at 相似文献
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《International Geology Review》2012,54(4):311-321
A newly compiled geobotanical map of the U.S.S.R. scale 1:4,000,000 is described. Two hundred and ten categories of vegetation are mapped, classified under 15 major groups. The relation of the mapped vegetation units to climate, soil, ground condition (permafrost), watersheds, and major geomorphic features is emphasized. -- M. Russell. 相似文献
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INTRODUCTION Iron deposits are widely distributed in S. W. Hupeh, especially in the districts of I Tu (宜都) and Changyang (长陽) where native mining industry has been carried on since very ancient time. Production from such mines 相似文献
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甘肃马泉金矿二十号矿带地质特征 总被引：5，自引：0，他引：5
通过对二十号矿带与矿床主体三、四号矿带地质特征的对比和ZK4 0 1孔伴生元素特征的研究 ,认为二十号矿带是四号矿带东延部分 ,其露头位于矿体头部附近。预测在二十号矿带180 0m标高以下一定还有较大盲矿体存在。 相似文献
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This paper offers a preliminary statement of the results of investigations carried out in the South Sangkanho basin, in the mountains some 80 miles to the NW of Peking. Important fossiliferous deposits found in this area throw light on the conditions ruling in N. China during the transition from Pliocene 相似文献
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In my work, Lapidarium Sinicum, the chapter on brass is speciallydevoted to this inquiry. Recently Dr. Read of the U. S. Bureau of Mineswrote to Dr. Ting, suggesting the question whether "The knowledge ofzinc-smelting in India is previous to that developed in China." Therefore 相似文献
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Corallum massive, composed of long irregular prismatic and often curved corallites, which are completely amalgamated by means of their epithecae and show no trace of divisional lines between them. Epitheca imperforate, rather thick, equalling about one fourth the diameter of the thecarium. Calyx unknown, 相似文献
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