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1.
Wang Ende Shenyang Institute of Gold Technology Shenyang Liaoningand Guan Guangyue Northeast U niversity of Technology Shenyang Liaoniny 《《地质学报》英文版》1994,68(1):31-42
The bacteria used in the experiment are Thiobacillus Ferrooxidans separated from acidic mine water in sulphide deposits. The chemoautotrophic bacteria can act directly on sulphides and accelerate the oxidation of sulphides. The experiment shows that the bacteria, as an important microbial factor of gold's supergenous enrichment within the oxidized zones of sulphide deposits, are helpful to dissolve gold and silver in ferric sulphate. In the bacterial oxidation process, the precipitation of goethite is concerned both with the lower activity of ferric ions and with the existence of carbonates in solution. Meanwhile, the acid-resisting and oxidizing ability of the bacteria will certainly lead up to a microbial way of treating the acidic mine water. 相似文献
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FRANZ WEIDENREICH 《地质学报》1937,17(2)
The wealth of material of"Sinanthropus pekinensis"remains nowat our disposal enables us to define its typical character and to determinethat Sinanthropus undoubtedly represents the most primitive hominidknown hitherto.Since Sinanthropus is connected with recent man by a 相似文献
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《吉林地质》2004,(1)
Thegeologicdataistheinformationonthelandandresources,whichisanimportantfoundationforunder standingandstudyingtheEarth ,protectingandrationallyusingresourcesintheEarth.Thegeologicdataareex tensivelyusedtostudygeoscience,mineraldevelopment,engineeringconstruction,Earth‘senvironmentalpro tection,preventionandreductionofdisaster.Thecollectionandusingofgeologicdataplayanimportantroleinavoidingandreducingtheinvestmentriskandrepetitiveinvestmentongeologicwork,andpromotingsustainabledevelopmentofthe… 相似文献
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《International Geology Review》2012,54(11):1652-1656
Inasmuch as kimberlites prove to be porphyritic rocks of effusive habit, upon review of published ideas and facts, the general classification of effusive rocks is fully applicable to kimberlites. Consequently superfluous adjectives such as “massive,” “igneous,” “basaltic,” etc., and use of the term “kimberlite” itself should be discouraged. 相似文献
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Tao Weiping 《《地质学报》英文版》1990,64(2):163-178
Owing to the internal relationship between material sources or mineralization ways and the difference ofmineralization micro-environments or the change of constraints. certain types of nonmetallic mineral depositsare regularly formed either simultaneously or in successive order under the control of certain association ofmineralization processes in a certain geotectonic environment, thus forming a minerogenetic series ofnonmetallic mineral deposits. The geological setting that controls the formation of minerogenetic series is mosttruly recorded in ore-bearing formations. while the mineralization processes which are associated or surely suc-cessive are the indispensable prerequisite for the formation of the various mineral deposits of a minerogeneticseries. Therefore, the minerogenetic series of nonmetallic mineral deposits can be classified according tomineral-bearing formations and mineralization processes. Based on available data. 13 minerogenetic series aredistinguished in China. The study of minerogenetic series may not only result in the enrichment of the theory ofmineral deposits but also help direct mineral prospecting and give guidance in the integrated development andutillization of mineral resources. 相似文献
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Strong vibrations of the Earth’s crust in the frequency range of 7–9 Hz, referred to as the “voice of the sea,” have been recorded in the course of processing synchronous experimental data obtained during recording of variations in the deformation of the Earth’s crust using a shore laser strainmeter, atmosphere pressure variations using a laser nanobarograph, and hydrosphere pressure variations using a laser meter for hydrospheric pressure and wind velocity variations. The nature of these vibrations and their transformation to adjacent geospheres have been discussed. 相似文献
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《Geoforum》2013
The effect of uncertainty on cooperation between the partners sharing the natural resources remains unknown. Uncertainty may strengthen cooperation between partners, as it is necessary to implement cooperative mitigation policies, however, it may also serve as a cause of friction between parties, as it may aggravate existing trust issues or power asymmetries. Given the potential for such contrary outcomes, we provide criteria to examine empirically how uncertainties in a transboundary setting seem to promote or impede cooperation. Taking Israeli–Palestinian Annapolis round and post-Annapolis negotiations as a case study, this work identifies the effect of uncertainties related to water on negotiation positions. Social and political uncertainties, which tend to be more associated with uncertainty regarding interpretation rather than a lack of information, play a much stronger role in water negotiations than do technical or physical uncertainties that often dominate in other resource issues. Many of the criteria used to assess the effect of uncertainty indicate that partners attempted to address uncertainties in an ostensibly cooperative manner, accepting negotiation venues and rules. However, confronting uncertainty stemming from interpretation of information often around social issues tends to result in additional uncertainties associated with delaying negotiations, spillover effects and power implications, each with negative implications in terms of cooperation. As such, mechanisms proposed to address these uncertainties also tend to be more disputed. The only type of mechanisms that did not appear to aggravate the effects of these uncertainties and perhaps the only that would be indicative of some type of cooperation, even if low level, are those that deal data and information exchange and research. 相似文献
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Please?refer?to?the?attachment(s)?for?more?details. 相似文献
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The geostatistical information method consists in the use of the principleof quantitative evaluation in exploratory engineering research.The principle ofquantitative evaluation is based on the mathematical model of the ore body.Theselection of optimal exploratory scheme and optimal engineering positions hasbeen studied in this paper. 相似文献
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LIU Xiaojing 《中国地球化学学报》2005,24(4):382-385
Four experiments have been done on the influence of times of infusion, temperature, time and ratio of tea to water on the dissolving characteristics of fluoride and aluminum in brick tea. According to the results, the behaviors of F and Al which found their way into tea liquor were analyzed and the conclusions have been drawn： the dissolution of F and Al is not synchronous and after the elements find their way into tea liquor respectively, they will be reset to form complexes of F and Al. 相似文献
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S. K. Simakov 《Doklady Earth Sciences》2018,482(2):1317-1319
It is known that the Р–Т parameters of diamond-bearing kimberlite xenoliths correspond to subductive paleogeotherms lying between the 36 and 41 mW/m2 conductive models. There are some studies showing the correlation of diamond ability with oxygen fugacity and the fluid composition of mantle xenoliths. The most diamondiferous samples correspond to the water compositions of the calculated O–H–C fluid with a minimum atomic carbon content in it. From the calculations it follows that the fluid carbon atomic content increases with a temperature increase and with the pressure decreasing. The most minor C contents have the 35 mW/m2 conductive model in comparison with the 40 and 45 mW/m2 models. As a result, it is possible to conclude that the low temperature fields (less than 1100°C) of the “cold” geotherms have the highest diamondiferous ability. 相似文献
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The General Characteristics and Distribution of the Glaucophane-Schist Belts of China 总被引：1，自引：0，他引：1
Dong Shenbao 《《地质学报》英文版》1990,64(1):101-114
On the basis of the temperature variation, the glaucophane-schist facies Gan be classified into two faciesgroups, the glaucophane-lawsonite facies group and the glaucophane-greenschist facies group, and forms vari-ous facies series with other metamorphic facies. Glaucophane-schist belts of China are of different types withregard to their average T-P gradients and tectonic environments. They are: (1) Proterozoic intracratonicglaucophane-schist belts, (2) Caledonian intracratonic glaucophane-schist belts, (3) Palaeozoic pericratonicglaucophane-schist belts along the northern margin of the Chinese Platform, and (4) Meso-Cenozoicglaucophane-schist belts related to subduction. The initiation and evolution of glaucophane-schist metamorphism are related to their tectonic environ-ments. Most glaucophane-schist belts of China were formed in sialic environments. First the crust began tobreak up and eventually oceanic crust was formed. It seems that a non-uniformitarian mechanism may be in-volved as this evolution is related to the change of the configuration of the heat flow within the crust. 相似文献
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M. V. Shunkov N. A. Kulik M. B. Kozlikin E. V. Sokol L. V. Miroshnichenko V. A. Ulianov 《Doklady Earth Sciences》2018,478(1):46-50
Authigenic phosphate mineralization was first studied on the territory of Russia on the basis of the Holocene and Pleistocene deposits of Denisova Cave. The formation of phosphates in the eastern gallery is related to biodegradation of the horizons of guano of insectivorous bats, which inhabited the cave in the absence man. The results confirmed the archaeological record of the Holocene and the upper part of Pleistocene sequences of the eastern gallery. 相似文献
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Jowett AJ 《GeoJournal》1991,23(2):135-146
Pre-1949 China was The Sick Man of Asia, The Land of Famine. In 1949 Mao brought the communists to power and in the re-ordered world, all such problems were supposedly overcome — but not so. Thirty years ago China suffered one of the world's worst famines. Over the four years 1958–61, China suffered some 25–30 million more deaths and experienced some 30–35 million fewer births than might have been expected under normal conditions. Yet for almost a quarter of a century there would be few, outside of China, who were aware of the existence let alone the dimensions of the disaster. Access to Chinese census data since the mid-1980s has permitted a preliminary analysis of the demographic impact of the famine.Abbreviations JPRS-CEA-81-128
Joint Publications Research Service, China Economic Affairs Report 128, 1981
- JPRS-CPS-85-028
Joint Publications Research Service. China Report, Political, Sociological & Military Affairs 28, 1985 相似文献
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G. I. Dolgikh S. G. Dolgikh V. A. Chupin Yu-Hung Hsiao 《Doklady Earth Sciences》2016,471(2):1257-1260
This paper is focused on analysis of comprehensive experimental research data on the infragravitational range of periods (from 20 s to 10–12 min) obtained by synchronous measurements of fluctuations in deformations of the Earth’s crust and atmospheric and hydrospheric pressure variations. It is established that the identified variations in the period range of 1–4 min are rarely observed in records of a laser nanobarograph and laser instrument for measuring hydrospheric pressure variations (laser hydrophone), while they are frequently observed in records of laser strainmeters at a variation period of 3–4 min. Oscillation excitation in the period ranges of 7–13 min, especially in the period ranges of 8–12 min, is largely related to atmospheric processes in the corresponding periods. 相似文献
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Please refer to the attachment(s) for more details. 相似文献