The status of continental lithosphere rheology and experiments on creep of rocks at high temperature and high pressure

ZHOU Yong-sheng,HE Chang-rongina Earthquake Administration, Beijing 100029, China)  

The multi\|layer rheology of continental lithosphere which is like a jelly sandwich has been widely accepted, and the rheological model has been used to discuss many science topic of continental geodynamics. However, a recent reassessment of the earthquake focal depth distribution of on continents and the experimental data of rock rheology make it is difficult to maintain the single pattern, but it exists variety rheological structure in different continents, especially rheology of lower crust where is the most complex layer, which is not only controlled by non\|uniformity of component and structure, but also effect by water in lower crust. Although a large number of experimental data about rock rheology at high temperature and high pressure have been obtained, rheological experiments of lower crustal rocks are still lack systematic, especially the rheological data of wet rocks are sparse. So it is most important to deep understand the rheology of lower crust for performing the rheological experiments of lower crustal rocks, including both dry and wet samples. 

【Fund】： 国家自然科学基金(40002020)资助;; 中国地震局地质研究所论著:(2004B0026).
【CateGory Index】： P313

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