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1.
<正>The Phlaythong large iron deposit in Shampasak of southern Laos,is located in the Kon Tum microblock(Fig.1A),central-southern part of the Indo-China block,and the geographic coordinate of the central mining area is 14°43′04″N and 106°07′02″E.Intensive tectonic and magmatic activities of multiple periods developed in this region,especially in Mesozoic and Cenozoic,which are closely 相似文献
2.
正1 Introduction A salt lake is a naturally occurring complex body of water and salt interaction.More than 700 salt lakes are widely distributed in the area of the Qinghai-Tibet Plateau.Most of the salt lakes are famous for their abundance of lithium,potassium,magnesium,and boron resources.It is 相似文献
3.
正Jinding core(ZK04,36°47′35.36″N,108°19′05.24″E)is located in the northern area of Luohe river basin,northern Chinese loess plateau,lying to the southeast of Wuqi County about 20 km.The total depth of Core ZK04 is 92.20 相似文献
4.
Alla BRYANSKAYA Alexey ROZANOV Tatyana MALUP Taisiya ALESHINA Elena LAZAREVA Oxana TARAN Tatyana GORYACHKOVSKAYA Vladimir IVANISENKO Sergey PELTEK 《《地质学报》英文版》2014,88(Z1):61-62
正Salt Lake is one of the lakes in the system,consisting of a huge amount of salt and bitter-salty lakes in Novosibirsk Oblast and Altai Krai.These lakes are unique and highly unstable systems where the parameters of geochemical 相似文献
5.
正1 Introduction China is a country which has many salt lakes.Tibet is the area where have numerous salt lake,because the sources of water have multiple chemical type,resulting in Tibet salt 相似文献
6.
正1 Introduction Salt lakes are widely distributed in the western of China,especially in the area of Qinghai-Xizang(Tibet)Plateau.A series of salt lakes in the Qaidam Basin,located in Qinghai Province,China,is famous for their abundance of lithium,potassium and boron resources(Zheng et al,1988;Deng et al,2012).It is well known that the 相似文献
7.
正1 Introduction Salt lakes are very interesting natural objects which can be found in different places in the world.Russia is not an exception.Climate conditions are various in Russia,but the climate is not very hot.In Russia there are a lot of places where salt lakes are spread.One of them is the Tuva region where lakes with different compositions are 相似文献
8.
YE Chuanyong ZHENG Mianping WANG Zhiming HAO Weilin LIN Xiaobin HAN Jun 《《地质学报》英文版》2014,88(Z1):170-172
正The Qaidam Basin is a large intermontane depression in Qinghai Province,China,which located on the northern margin of the Tibet plateau,and surrounded by the Qilian,Kunlun and Aljun mountains which rise to more than 5000m.Some 27 salt lakes occur within the basin,occupying an area of approximately 1500 km2.Additionally,there are extensive areas of dry playas.Together,the playas and salt lakes cover about one quarter of the total basin area.Whereas the western 相似文献
9.
Wei Xinjun Jiang Jixue Qinghai Research Institute of Salt Lake Exploration Exploitation Golmu Q inghai 《《地质学报》英文版》1994,68(1):71-82
The paper discusses the distribution of Quaternary sediments, occurrence of saline minerals and phases of neotectonic movements and their manifestations in the Qaidam basin. The formation of four successive lacustrine terraces in Tertiary anticlinal zones in the western part of the basin was related to the neotectonic movements that took place 100 Ka ago, and the distribution of such terraces discloses, in a way. the evolutionary history of the Quaternary salt lakes. According to the distribution of the terraces coupled with the distribution of Quaternary sediments and features of salt deposition, four periods of Quaternary salt lake evolution in the basin may be distinguished, which correspond to four stages of salt deposition respectively. 相似文献
10.
Heavy water eoutcnts were determined for brines from Some salt lakes, and for water samples from rivers, springs and oil field by temperature-float method. Because the salt lakes studied are situated in cold, arid region of high altitude, the heavy water content in concentrated brines is much higher than that in rivers and springs due to vigorons evaporation, with a maximum value of 5.9 γ higher than that in running water of Peking. Discussion is also given to the dependence of heavy water variation upon season, depth of lake water, density, the degree of brine metamorphism,and crystallization of minerals containing crystalline water. 相似文献
11.
<正>The Beiya gold polymetallic ore district covers an area of 22.06 km2 and is located 47.5 km away in the direction 172°from Heqing county seat of northwestern Yunnan.Its geographical coordinates are 100°11′15″–100°13′00″E and6°07′30″–26°10′30″N.Since its discovery in 1999 until November 31st 2013,it has had accumulative proven(111b+122b+331+332+333)gold metal amounts of 258.475t at an average grade of 2.61 g/t.This deposit contains 88.98million tons of paragenetic and associated iron ores,with TFe grade varying from 9%to 36%;metal amounts are:gold 相似文献
12.
DENG Tianlong WANG Shiqiang MENG Lingzong GUO Yafei YU Xiaoping LIU Yuanhui 《《地质学报》英文版》2014,88(Z1):307-309
正1 Introduction Salt lakes are widely distributed in the world,and salt lakes in China are mainly located in the area of the Qinghai-Xizang(Tibet),and the Autonomous Regions of Xinjiang and Inner Mongolia.There are more than 700salt lakes,each with an area larger than 1 km2,in the 相似文献
13.
正The research status and the future study prospect of salt lake organisms of Chinese salt lakes were elaborated in this paper.Many saline lakes occur widely in arid and semiarid areas of China,and more than half of the total 相似文献
14.
正Objective Quaternary saline lakes are significant for paleoclimatic reconstruction due to the high sensitivity of salt minerals to environmental changes.However,salts in these areas with great thickness such as halite or potash representing extreme environments have severely blocked the application of traditional chronological methods.This is typified by Lop Nur,since accurate age to constrain salt 相似文献
15.
正1 Introduction There are numerous salt lakes in western China(Zheng Mianping,et al.,2011).Yiliping playa on the western Qaidam Basin is a magnesium sulfate subtype dry salt lake with high concentrations of potassium,boron and lithium. 相似文献
16.
正1 Introduction Many soda and salt lakes are characterized by the formation of the meromictic conditions under which a part of the water column is not involved in the annual process of mixing(Mac Intyre,Melack,1982).This creates an 相似文献
17.
Gamal EL-SHABRAWY Mohamed GOHAR Mousa GERMOUSH Elena ANUFRIIEVA Nickolai SHADRIN 《《地质学报》英文版》2014,88(Z1):180-182
正1 Introduction There is now ample evidence of the impacts of the recent climate change and anthropogenic activities on different saline lake ecosystems.All over the world salt lakes are threatened by climate change,water diversions upstream for agricultural purposes,watershed changes,introduction of aliens,etc.that result in catastrophic 相似文献
18.
CHEN Yong WANG Jiuyuan ZHOU Zhenzhu CHEN Xiaolan ZHAO Zhenyu SHI Peng HAN Yun 《《地质学报》英文版》2021,95(3):1008-1015
Trapped ancient microorganisms in halite fluid inclusions are of special interest to the understanding of biology and ecology in salt lake systems.With the integration of petrologic,microthermometric,and Raman spectroscopic analyses,this study utilizes fluid inclusions from Chaka Salt Lake,eastern Qaidam Basin,NW China,to assess the possibility of microorganism-trapping by fluid inclusions.Here,we report that the solid phase of some primary fluid inclusions contains carotenoids,which is interpreted as evidence of Dunaliella algae,and that the coexisting liquid phase comprises SO_4~(2-).The homogenization temperatures of single-phase primary fluid inclusions indicate that the precipitation temperature of the Holocene halite in Chaka Salt Lake ranges from 13.5°C to 36.4°C.This suggests that fluid inclusions in halite are a good medium for trapping and preserving ancient microorganisms and organic matter in salt lakes,and that Raman spectroscopy has good potential to identify halophilic archaea. 相似文献
19.
Lü Yuanyuan ZHENG Mianping CHEN Wenxi ZHANG Xuefei LIU Xifang WU Qian YU Jiangjiang 《《地质学报》英文版》2014,88(Z1):151-152
正The origin of boron in boron-rich salt lakes in the Tibetan Plateau has long been the subject of debate.The Damzung Co Salt Lake in central Tibet has high boron concentrations(B=276–313 mg/L)and is an ideal site for 相似文献
20.
The applications of intelligent techniques have increased exponentially in recent days to study most of the non-linear parameters.In particular,the behavior of earth resembles the non-linearity applications.An efficient tool is needed for the interpretation of geophysical parameters to study the subsurface of the earth.Artificial Neural Networks(ANN) perform certain tasks if the structure of the network is modified accordingly for the purpose it has been used.The three most robust networks were taken and comparatively analyzed for their performance to choose the appropriate network.The single-layer feed-forward neural network with the back propagation algorithm is chosen as one of the well-suited networks after comparing the results.Initially,certain synthetic data sets of all three-layer curves have been taken for training the network,and the network is validated by the Held datasets collected from Tuticorin Coastal Region(78°7′30″E and 8°48′45″N),Tamil Nadu.India.The interpretation has been done successfully using the corresponding learning algorithm in the present study.With proper training of back propagation networks,it tends to give the resistivity and thickness of the subsurface layer model of the field resistivity data concerning the synthetic data trained earlier in the appropriate network.The network is trained with more Vertical Electrical Sounding(VES) data,and this trained network is demonstrated by the field data.Groundwater table depth also has been modeled. 相似文献