Three-dimensional rheological structure of the lithosphere in the Ordos block and its adjacent area   总被引：8，自引：0，他引：8  

Shao Xian Zang  Rong Qiang Wei  Yong Gang Liu 《Geophysical Journal International》2005,163(1):339-356

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Dynamics of diffuse oceanic plate boundaries: insensitivity to rheology   总被引：1，自引：0，他引：1  

Stephen Zatman  Richard G. Gordon  Kartik Mutnuri 《Geophysical Journal International》2005,162(1):239-248

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High-resolution teleseismic body-wave tomography beneath SE Romania – I. Implications for three-dimensional versus one-dimensional crustal correction strategies with a new crustal velocity model     

M. Martin  J. R. R. Ritter  the CALIXTO working group 《Geophysical Journal International》2005,162(2):448-460

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相干体技术和图像处理技术在检测断层中的应用   总被引：6，自引：0，他引：6  

罗振丽张爱敏  丁在宇 《中国煤田地质》2004,16(3):48-50

相干体技术在断层检测中，可以强化其地震信息的不连续性，由于弥散作用及噪声的存在，很可能影响到断层特征的判定。相干体技术与图像处理中的细化以及边缘检测技术的结合，可以克服不确定因素造成的影响。将相干切片作为二维图像，利用图像处理技术进行进一步处理，提高利用相干切片进行断层解释的精度和效率，使相干技术在三维解释中的作用得到更大的发挥：  相似文献   

Rheological Simulating Study of Mechanical Conditions for Syn-extensional Basin and Mountain Coupling System     

WuHongling YinXiulan 《中国地质大学学报(英文版)》2003,14(4):330-338

This article gives a mechanical model, in which the layers of lithosphere are assumed to be the creep materials, to study the coupling mechanism of a syn-basin-mountain system quantitatively by using the numerical simulating method. A geological dynamic extensional mode given by some geologists is theoretically discussed and verified. The study shows that lithosphere thickening or thinning is closely related to the thermal activity, or in other words, thermal convection beneath the lithosphere. It is one of the important factors affecting the formation of the basin-mountain coupling system. As an essential condition, only the upward buoyant force and the horizontal dragging force caused by the thermal convection jointly act on the bottom of the lithosphere, the stress and strain states in rock‘‘s layers are advantageous to forming the tectonic-landforms of the basin-mountain coupling system. A study on the creep features of the lithosphere shows that the stress and strain in the rock‘‘s layers vary with time when the lasting forces act on the boandary. They increase rapidly at initial stage and decrease steadily after reaching the peak value. Phenomena of stress relaxation are significant for studying the tectonic evolution.  相似文献   

On the effects of a dipping axis of symmetry on shear wave splitting measurements in a transversely isotropic medium   总被引：1，自引：0，他引：1  

Sébastien Chevrot  Robert D. van der Hilst 《Geophysical Journal International》2003,152(2):497-505

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碳酸岩是大陆岩石圈构造背景和地幔交代作用的指示岩石   总被引：2，自引：0，他引：2       下载免费PDF全文

杨学明  杨晓勇  M．J．LeBas 《地球物理学报》1998,41(Z1):228-235

根据已知碳酸岩的地质产状、岩石学特征、Nd-Sr-Pb同位素及痕量元素地球化学特征,结合高温高压实验岩石学资料,论述了其地幔源区的物质成分、交代过程、软流圈地幔部分熔融机制和碳酸岩岩浆的演化模型碳酸岩既可以产生于裂谷环境,由起源于软流圈地幔的霞石质超基性-基性岩浆经液态不混溶作用而形成,与硅酸不饱和过碱性杂岩构成环状碳酸岩-碱性杂岩;也能够产生于碰撞造山过程中派生的引张岩石圈断裂带,直接导源于岩石圈地幔的低程度部分熔融作用,形成单一的透镜状、条带状和似层状碳酸岩体  相似文献   

天山西段岩石圈深部结构及其与南北盆地构造关系   总被引：2，自引：0，他引：2  

鲁新便  张云智  王新维  杨卫东  李冰 《新疆地质》1998,(4)

根据深部地球物理资料 ,将天山造山带划分为三个不同的构造单元 ,各构造区岩石圈结构表现各异。天山西段岩石圈深部广泛存在低速 (高导 )层 ,它是构成天山地壳“扇状”构造样式的物理基础。天山的软流圈深度浅于南北两侧 ,它具有较高密度的上地幔物质和较深山根。它与南北盆地的深部构造关系为陆内俯冲关系 ,天山岩石圈的深部结构特征 ,与其所处地球动力学环境和中亚地壳组成不均一性有关  相似文献   

Dependence of horizontal stress magnitude on load dimension in glacial rebound models   总被引：1，自引：0，他引：1  

Paul Johnston  Patrick Wu  & Kurt Lambeck 《Geophysical Journal International》1998,132(1):41-60

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Scattering parameters of the lithosphere below the Massif Central, France, from teleseismic wavefield records   总被引：1，自引：0，他引：1  

Joachim R. R. Ritter  Sergei A. Shapiro  & Barbara Schechinger 《Geophysical Journal International》1998,134(1):187-198

Teleseismic P -wave recordings are analysed in the frequency range 0.3–6  Hz to derive structural (statistical) parameters of the lithosphere underneath the French Massif Central. For this we analyse differences in frequency-dependent intensities of the mean wavefield and the fluctuation wavefield. It is possible to discriminate a weak fluctuation regime of the wavefield in the frequency range below 1  Hz and a strong fluctuation regime starting above 1  Hz and continuing to higher frequencies. The observed wavefield fluctuations in the frequency range 0.3–3  Hz can be explained by scattering of the teleseismic P wave front at elastic inhomogeneities in the lithosphere. A statistical distribution of the inhomogeneities is assumed and the concept of random media is applied. The lithospheric structure under the Massif Central can be described as a 70  km thick heterogeneous layer with velocity fluctuations of 3–7 per cent and correlation lengths of the heterogeneities of 1–16  km.  相似文献