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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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《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(11):1515-1516
News of visitors and notes on their work including several items of general interest to paleontologists.--W. A. Oliver, Jr. 相似文献
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Up to 1931 nothing was positively known concerning the Cenozoicformations eventually preserved in S.E.Shansi.The large area bounded by 相似文献
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Up to 1931 nothing was positively known concerning the Cenozoicformations eventually preserved in S.E.Shansi.The large area bounded by 相似文献
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简要介绍了目前查询地学信息资源的部分主要工具，主要的水资源与环境地学信息数据库的分布格局，提供了相应的网址和主要地学信息库的特征；同时也对互联网上分布的有关地学应用软件系统，地学教育资源等作了简要介绍。这些内容不仅给我国地学研究，特别是从事大尺度地学环境、水资源研究的人员提供了有价值的信息，同时也可以帮助初步接触网络的地学研究人员了解目前地学资源信息库的发展现状和水平，促使我国地学环境信息库的建设和发展。 相似文献
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《International Geology Review》2012,54(9):1023-1029
As a result of deep drilling and complex geophysical investigations conducted on a large scale the existence of a deeply fractured graben zone has been established in the basement of a pre-Paleozoic and epi-Hercynian platform. This zone stretches from the northwest to southeast over a distance of more than 4,000 km. In the northwest it is traced through the pre-Paleozoic Russian platform and includes the Pripyat, the Dnieper-Donets depressions and the Donets basin Hercynian folding zone. In the Fore-Caucasian territory it passes along the Russian and the epi-Hercynian platforms boundary within the buried range forming an extension of the Donets Basin. Further on, within the territory of Central Asia it is traced in the Mangyshlak mountain structure and the Bukhara- Khiva fracture zone. The activity of this tectonic zone during the post-Cambrian was displayed at different times. There is observed, therefore, a gradual NW-SE rejuvenation of sedimentary deposits filling up a graben system associated with the tectonic zone: Devonian deposits - in the Dnieper- Donets and Pripyat depression; Middle and Upper Carboniferous deposits-in the Donets Basin and within the area of the buried range; Permian-Triassic deposits - in the Mangyshlak mountain structure; and Jurassic deposits - in the Bukhara-Khiva zone. This shows that the renewal of tectonic activity along ancient fractures first began in the western part of the platform most elevated during the Paleozoic. During the Hercynian stage of tectogenesis tectonic processes of different characters took place in separate links of the entire zone: platform development - in the Dnieper-Donets depression; geosynclinal - in the Donets Basin, the buried range in the Bukhara-Khiva zone; geosynclinal and intermediary stage of intermontane depressions - in the Mangyshlak mountain structure.—Auth. English summ. 相似文献
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《International Geology Review》2012,54(9):12-18
Soviet scientists have achieved considerable success in the application of petrography to the study of coal, despite lack of coordination among various specialists studying coal genesis, metamorphism, and structure and the inadquate application of modern methods of investigation. An appraisal of coal petrography in the Soviet Union and in other nations shows that the scope of problems which interest coal petrographers is universal, but the presentation of problems, development of details, and purpose of study are very different. --G. E. Denegar. 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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内华达北中部的新月谷-独立金矿区线性构造(CVIL)是一个呈20°～30°走向、具多期变形、侵入及热液活动的构造带,该带从独立金矿区向南至科特兹矿山附近延伸达90 km,经过科特兹-派普来恩、卡林及独立三个主要的沉积岩型金矿区,含有罗伯茨山异地岩(可能是奥陶系Vinini组)的强烈构造岩,NE向的断层,白垩或第三纪的NE向的岩墙.变形带的组构具混杂岩的特点,但混杂岩中也显示有与晚三叠世和晚侏罗世之间形成的褶皱展布方向一致的定向组构.此外,沿CVIL带局部出现有第三纪的碧玉状岩石、角砾岩、方解石脉及脱钙蚀变作用.CVIL构造带南北两端成群出现的沉积岩型金矿床具有与卡林矿带金矿床相同的矿物特征.上述二个矿区都有NE向的断层,穿越罗伯茨山异地岩上盘中的构造窗和构造高地.CVIL可能是形成某些金矿床的主要热液通道. 相似文献
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P. TEILHARD DE CHARDIN 《地质学报》1930,9(4):331-332
In addition to the Turtle Sinohadrianus described by Dr. C. Ping in the Bulletin of the Geological Society of China Vol. Ⅷ, pp. 231—238, the material collected by Mr. C. Li, of the National Institute of Geology, Shanghai, 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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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