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301.
Cheng Shunyou Zhang Guowei Diao Bo Guo Anlin Yu Xiangni 《Frontiers of Earth Science》2007,1(1):116-120
This paper considers the lithospheric rheological structure of the East Qinling orogenic belt to explore its geodynamics.
The lithospheric rheological structure was calculated by the constraints of the lithospheric temperature structure. The thermal-rheological
stratification structures of the lithosphere in the East Qinling orogenic belt present different features from each other
within different tectonic units. The hinterland fault-bounded fold zone (HLZ) and the North Qinling thick-skinned imbricated
thrust zone (NQL) in the northern half part of the Qinling orogen, with a temperature of 305°C for the Moho boundary, are
characterized by “cold” geotherm, thickened lithosphere and the model C for rheological stratification structure. The South
Qinling tectonic zone (SQL), with a mean temperature of 642°C and a high temperature of 826°C for the Moho boundary, has obvious
features with the model H of “hot” geotherm, thinned lithosphere and intensive rheological behavior within moderate-lower
crust and top of the upper mantle. During post-orogenesis, the NQL, being the convergent frontal region of continental subduction
beneath the Qinling orogen by both the North China craton (NC) and Yangtze craton (YZ), is in a coexistence period of a dominantly
thickened lithosphere and an initial delamination, and the SQL, probably under pluming, has been developing new delamination
and underplating and partial melting within the crust in its axel area and recycling for mass and energy (in the forms of
heat transfer and convection) between the crust and mantle.
Translated from Journal of Northwest University (Natural Science Edition), 2005, 35(5): 601–605 [译自: 西北大学学报 (自然科学版)] 相似文献
302.
1995年9月20日山东省苍山5·2级地震 总被引:2,自引:0,他引:2
本文着重概述了1995年9月20日苍山5.2级地震序列具有应变能和频度呈正常衰减、衰减系数h值高、b值正常波动等特征;阐述了震后早期在现场判断其为主震—余震型序列的基本依据,探讨了孕震环境机制和地震的动力问题。 相似文献
303.
Potential assessment of CO2 geological storage based on injection scenario simulation: A case study in eastern Junggar Basin
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Ma Xin Wen Dong-guang Yang Guo-dong Li Xu-feng Diao Yu-jie Dong Hai-hai Cao Wei Yin Shu-guo Zhang Yan-mei 《地下水科学与工程》2021,9(4):279-291
Carbon Capture and Storage (CCS) is one of the effective means to deal with global warming, and saline aquifer storage is considered to be the most promising storage method. Junggar Basin, located in the northern part of Xinjiang and with a large distribution area of saline aquifer, is an effective carbon storage site. Based on well logging data and 2D seismic data, a 3D heterogeneous geological model of the Cretaceous Donggou Formation reservoir near D7 well was constructed, and dynamic simulations under two scenarios of single-well injection and multi-well injection were carried out to explore the storage potential and CO2 storage mechanism of deep saline aquifer with real geological conditions in this study. The results show that within 100 km2 of the saline aquifer of Donggou Formation in the vicinity of D7 well, the theoretical static CO2 storage is 71.967 × 106 tons (P50)① , and the maximum dynamic CO2 storage is 145.295 × 106 tons (Case2). The heterogeneity of saline aquifer has a great influence on the spatial distribution of CO2 in the reservoir. The multi-well injection scenario is conducive to the efficient utilization of reservoir space and safer for storage. Based on the results from theoretical static calculation and the dynamic simulation, the effective coefficient of CO2 storage in deep saline aquifer in the eastern part of Xinjiang is recommended to be 4.9%. This study can be applied to the engineering practice of CO2 sequestration in the deep saline aquifer in Xinjiang. 相似文献
304.
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