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热岩石圈
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  thermal lithosphere
     On the basis of total 822 heat flow measurement in the continental area of China, the deep geothermal characteristics of lithosphere of the major tectonic units was studied, which includes the temperature at 40 km depth, the thickness of thermal lithosphere, the cumulated strength and effective elastic thickness (EET) of lithosphere and so on.
     根据中国大陆 82 2个实测热流数据 ,研究了中国大陆主要构造单元的深部地热特征 ,包括 40km深度的地温值、热岩石圈厚度、岩石圈累积强度和有效弹性层厚度 (EET)等 .
短句来源
     The results show that the average heat flow value of the South Huabei basins is 53.7 mW/m2 , the values of mantle heat flow vary from 30 mW/m2 to 34 mW/m2 , the temperatures of Moho vary from 500℃ to 550℃, and the thicknesses of thermal lithosphere are between 110 km and 130 km .
     结果表明,南华北盆地群平均热流值为53.7mW/m2,地幔热流为30~34mW/m2,莫霍面温度为500~550℃,热岩石圈厚度为110~130km。
短句来源
     On the basis of this formula and heat flow data in major sedimentary basins of China, the crustal and mantle heat flow values were estimated The inferred results on the thickness of the thermal lithosphere and the average crustal heat production rate are consistent with the results by seismology.
     利用该公式以及热流值估算了中国主要盆地的壳幔热流值 ; 根据这些数值得出的热岩石圈厚度和地壳平均生热率结果与地震学研究成果一致 .
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  相似匹配句对
     THERMAL MODEL OF THE OCEANIC LITHOSPHERE
     海洋岩石圈模式
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     THERMAL STRUCTURE OF LITHOSPHERE IN FUJIAN, CHINA
     福建岩石圈结构
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     A Talk About Lithosphere
     漫谈岩石圈
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     HOT
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  thermal lithosphere
Structure of the thermal lithosphere and asthenosphere beneath oceans and continents
      
The higher paleo-heat flow during the Middle-Late Mesozoic implies that the thickness of the "thermal" lithosphere at that time was just 50-55 km, it had been much thinned relative to the thickness (135-148 km) at the Early Mesozoic.
      
And larger tensional and shear stresses occur where the variation of geotemperature and the thickness of thermal lithosphere gradient belt.
      
A low density of depleted mantle beneath the thermal lithosphere is also included in some cases.
      


The Lower Yangtze area belongs to the Yangtze Plate in tectonic, and is one of tnt important areafor exploration of oil and gas in China. It is an aspect of learning lithospheric dynamic to research the deepthermal state combined with the tectonic evolving history and the distribution of heat flow density. The result, according to the research work of geothermal field and the heat flow density distribution in the area,shows that the geotemperature gradient is higher in the Northern Jiangsu basin (30℃/km in average)...

The Lower Yangtze area belongs to the Yangtze Plate in tectonic, and is one of tnt important areafor exploration of oil and gas in China. It is an aspect of learning lithospheric dynamic to research the deepthermal state combined with the tectonic evolving history and the distribution of heat flow density. The result, according to the research work of geothermal field and the heat flow density distribution in the area,shows that the geotemperature gradient is higher in the Northern Jiangsu basin (30℃/km in average) andlower in the other area (19 ̄ 25℃ /km). The average regional heat now density is about 6omW/m2 in theLower Yangtze area, and the value approaches the global continental lithosphere average. This shows that thethermal anomaly resulting from the Mesozoic tectonic movement disappers.Based on the regional tectonic features, the distribution of geotemperature gradient and the terrestrialheat now density in the Lower yangtze area as well as the thermal physical parameter of rock and the model ofthe layering crust, the deep thermal state, including the mantle heat flow density and the temperature at theinterface between the crust and the mantle as well as the Curie point isotherm, is constructed. And furthermore, the depth at which partial melting begins, i. e. 'thermal' lithospheric thickness from 80 to 150 km.The results of this paper can be summarized as follows: (1) The deep thermal state has strongly interrelated with the latest tectonic thermal events. Both the heat flow density at surface and the mantle heat flowdensity are higher in the region where the tectonic thermal events are younger. (2) During the NorthernJiangsu basin evolving, the much thermal energy is transmitted to the crust resulting from the lithosphere extending and the asthenolphere upwelling. So the deep thermal anomaly exists in the area, and the mantle heatflow density is higher, and the 'thermal' lithospheric thickness is thinner, and the Curie point isothermburied is shallower. All of these show that the heat diffusion possibley continues. (3) The Tanlu fault belt isactive from Mesozoic to Quaternary and is characterized by higher in the heat flow density at surface and thetemperature at the interface between the crust and the mantle and shallow in the Curie point isotherm buried.It also shows the tectonic movement is active in the depth. (4) The deep thermal state shows that low in themantle heat now density and the temperature at the interface between the crust and the mantle in the otherparts of the Lower Yangtze area in where the regional thermal events happened in Mesozoic.

根据下扬子地区区域构造、地温场和大地热流密度的分布特征,结合岩石热物性参数测试结果和该区的地壳分层模型,确定了地幔热流密度分布特征和壳幔边界温度以及居里等温面的埋藏深度。根据干玄武岩固相线公式,估算了上地幔介质部分熔融开始的深度(“热”岩石圈厚度)。结果表明,地幔热流密度在30~40mW/m2之间;壳幔边界温度在460~700℃之间变化;居里等温面埋深为25~35km,“热”岩石圈厚度为80~150km。深部热状态的分布特征主要与新生代的构造热事件相关。苏北盆地和郯庐断裂带存在明显的深部热异常。

The helium isotope 3He in underground fluid comes from the mantle by degassing process, and is associated with mantle heat flux. While 4He is the decay product of uranium and thorium, mainly concentrated in the continental crust, and is approximately proportional to the heat flux of crust. Consequently, the ratio of crust/mantle heat flow ( q c?/ q m) in continents is inversely related to the 3He?/ 4He ratio in underground fluid. Based on data sets of 3He?/ 4He ratio and q c?/ q ...

The helium isotope 3He in underground fluid comes from the mantle by degassing process, and is associated with mantle heat flux. While 4He is the decay product of uranium and thorium, mainly concentrated in the continental crust, and is approximately proportional to the heat flux of crust. Consequently, the ratio of crust/mantle heat flow ( q c?/ q m) in continents is inversely related to the 3He?/ 4He ratio in underground fluid. Based on data sets of 3He?/ 4He ratio and q c?/ q m in Eurasia and Canadian Shield, we obtain the regression relation: q c?/ q m=0.815-0.300 ln( 3He?/ 4He),in which the unit of 3He?/ 4He is R A (atmospheric 3He?/ 4He ratio). Furthermore, the crust and mantle heat flow components can be estimated from surface heat flow and q c?/ q m ratio. On the basis of this formula and heat flow data in major sedimentary basins of China, the crustal and mantle heat flow values were estimated The inferred results on the thickness of the thermal lithosphere and the average crustal heat production rate are consistent with the results by seismology. Helium isotope ratio ( 3He?/ 4He) is a useful parameter for separating crust and mantle components from continental heat flow. [

地下流体中的氦同位素 3He来自地幔的排气作用 ,4He则是铀、钍衰变的产物 .由于铀、钍元素在大陆地壳中富集 ,4He通量与地壳热流呈正相关关系 ;同时 3He通量与地幔热流之间呈正相关 .所以地下流体的氦同位素比值 (3He / 4 He)与大陆壳幔热流比值 (qc/qm)呈反相关关系 .根据欧亚大陆和加拿大地盾的地下流体氦同位素比值数据和相应的壳幔热流比值数据 ,统计出 qc/ qm 与 3He / 4 He之间的回归关系 :qc/ qm =0 81 5— 0 30 0ln(3He / 4 He) ;此处 3He/ 4 He的单位是RA(大气的 3He/ 4 He比值 ) .有了地表热流值和壳幔热流比值即可得到地壳热流和地幔热流 .利用该公式以及热流值估算了中国主要盆地的壳幔热流值 ;根据这些数值得出的热岩石圈厚度和地壳平均生热率结果与地震学研究成果一致 .氦同位素比值是区分大陆热流中地壳热流值和地幔热流值的有用参数 .

On the basis of total 822 heat flow measurement in the continental area of China, the deep geothermal characteristics of lithosphere of the major tectonic units was studied, which includes the temperature at 40 km depth, the thickness of thermal lithosphere, the cumulated strength and effective elastic thickness (EET) of lithosphere and so on. The results exhibit significantly lateral heterogeneity for heat flow pattern, thermal state and rheological features of lithosphere in China, which resulted from the...

On the basis of total 822 heat flow measurement in the continental area of China, the deep geothermal characteristics of lithosphere of the major tectonic units was studied, which includes the temperature at 40 km depth, the thickness of thermal lithosphere, the cumulated strength and effective elastic thickness (EET) of lithosphere and so on. The results exhibit significantly lateral heterogeneity for heat flow pattern, thermal state and rheological features of lithosphere in China, which resulted from the Cenozoic tectonothermal activities related to the Pacific subduction as well as the collision between India and Asia. According to heat flow values and deep geothermal characteristics, three large scale thermo tectonic domains, i.e. Eastern, Central and Western domain, can be identified in the continental area of China.

根据中国大陆 82 2个实测热流数据 ,研究了中国大陆主要构造单元的深部地热特征 ,包括 40km深度的地温值、热岩石圈厚度、岩石圈累积强度和有效弹性层厚度 (EET)等 .结果显示 ,中国大陆热流的空间分布以及岩石圈热状态和流变学特征均表现出明显的横向非均匀性 .这源于太平洋板块俯冲和印度 亚洲碰撞导致的新生代构造热活动 .根据热流值和深部地热参数 ,中国大陆可以划分为东部、中部和西部三个大尺度热 构造区 .

 
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