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Numerical modeling of geothermal groundwater flow in karst aquifer system in eastern Weibei, Shaanxi Province, china

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Science china Earth sciences 2007年第S1期 36-41页

作者： li ming1, li guomin1, yang liao2, dang xueya3, zhao chunhu1, hou guangcai3.& zhang maosheng3.1 state key laboratory of lithospheric evolution, institute of geology and geophysics, Chinese academy of sciences, beijing 100029, china 2 Xinjiang institute of Ecology and Geography, Chinese academy of sciences, ürümqi 830011, china 3 Xi’an institute of geology and Mineral Resources, Xi’an 710054, china

The quantitative assessment of geothermal water resources is important to the exploitation and utilization of geothermal resources. In the geothermal water systems the density of groundwater changes with the temperature, therefore the variations in hydraulic heads and temperatures are very complicated. A three-dimensional density-dependent model coupling the groundwater flow and heat transport is established and used to simulate the geothermal water flow in the karst aquifers in eastern Weibei, Shaanxi Province, china. The multilayered karst aquifer system in the study area is cut by some major faults which control the regional groundwater flow. In order to calibrate and simulate the effect of the major faults, each fault is discretized as a belt of elements with special hydrological parameters in the numerical model. The groundwater dating data are used to be integrated with the groundwater flow pattern and calibrate the model. Simulation results show that the calculated hydraulic heads and temperature fit with the observed data well.

关键词： geothermal water numerical modeling fault karst aquifer system Weibei of Shaanxi Province

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Numerical modeling of geothermal groundwater flow in karst aquifer system in eastern Weibei,Shaanxi Province,china

Numerical modeling of geothermal groundwater flow in karst a...

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中国科学院地质与地球物理研究所2.07学术年会

作者： li ming~(1+),li guomin~1,{2.,hou guangcai~3.& zhang maosheng~3.1 state key laboratory of lithospheric evolution,institute of geology and geophysics,Chinese academy of sciences,beijing 100029,china 2.Xinjiang institute of Ecology and Geography,Chinese academy of sciences,(U|¨)r(u|¨)mqi 830011,china 3 Xi’an institute of geology and Mineral Resources,Xi’an 710054,china

The quantitative assessment of geothermal water resources is important to the exploitation and utilization of geothermal *** the geothermal water systems the density of groundwater changes with the temperature,therefore the variations in hydraulic heads and temperatures are very complicated. A three-dimensional density-dependent model coupling the groundwater flow and heat transport is established and used to simulate the geothermal water flow in the karst aquifers in eastern Weibei, Shaanxi Province,*** multilayered karst aquifer system in the study area is cut by some major faults which control the regional groundwater *** order to calibrate and simulate the effect of the major faults,each fault is discretized as a belt of elements with special hydrological parameters in the numerical *** groundwater dating data are used to be integrated with the groundwater flow pattern and calibrate the *** results show that the calculated hydraulic heads and tem- perature fit with the observed data well.

关键词： geothermal water numerical modeling fault karst aquifer system Weibei of Shaanxi Province

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Renewed profile of the Mesozoic magmatism in Korean Peninsula: Regional correlation and broader implication for cratonic destruction in the North china Craton

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Science china Earth sciences 2016年第12期59卷 2355-2388页

作者： ZHAI mingGuo zhang YanBin zhang XiaoHui WU Fu Yuan PENG Peng li Qiu li hou Quanlin li TieSheng zhao Lei key laboratory of Mineral Resources Institute of Geology and Geophysics Chinese Academy of Sciences state key {2. of Continental Geodynamics Northwest University state key {2. of lithospheric evolution Institute of Geology and Geophysics Chinese Academy of Sciences key laboratory of Computational Earth Dynamics College of Earth Science University of Chinese Academy of Sciences

Widespread Mesozoic magmatism occurs in the Korean Peninsula(KP). The status quo is poles apart between the northern and southern parts in characterizing its distribution and nature, with the nearly absence of any related information in North Korea. We have the opportunity to have conducted geological investigations in North Korea and South Korea during the past ten years through international cooperation programs. This led to the revelation of a number of granitoids and related volcanic rocks and thus facilitates the comparison with those in East china and Japan. Mesozoic granitoids in the KP can be divisible into three age groups: the Triassic group with a peak age of ~2.0 Ma, the Jurassic one of ~190–170 Ma and the late Early Cretaceous one of ~110 Ma. The Triassic intrusions include syenite, calc-alkaline to alkaline granite and minor kimberlite in the Pyeongnam Basin of North Korea. They have been considered to form in post-orogenic settings related to the Central Asian Orogenic Belt(CAOB) or the Dabie-Sulu Orogenic Belt(DSOB). The Jurassic granitoids constitute extensive occurrence in the KP and are termed as the Daebo-period magmatism. They correlate well with coeval counterparts in NE china encompassing the northeastern part of the North china Craton(NCC) and the eastern segment of the CAOB. They commonly consist of biotite or two-mica granites and granodiorites, with some containing small dark diorite enclaves. On one hand, Early Jurassic to early Middle Jurassic magmatic rocks are rare in most areas of the NCC, whilst Middle-Late Jurassic ones are not developed in the KP. On the other hand, both NCC and KP host abundant Cretaceous granites. However, the present data revealed contrasting age peaks, with ~130–12. Ma in the NCC and ~110–105 Ma in the KP. Cretaceous granites in the KP comprise the dominant biotite granites and a few amphibole granites. The former exhibit mildly fractionated REE patterns and zircon εHf(t) values from ?15 to ?2., whereas the lat

关键词： Mesozoic granitoids Korean Peninsula Eastern china Japan Cratonic destruction

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