基于CRUST1.0的中国大陆及邻域岩石圈结构计算及特征分析  

THE LITHOSPHERIC HETEROGENITIES OF CHINA MAINLAND AND NEIGHBORHOOD BASED ON CRUST1.0 AND ITS CHARACTERISTICS

作　　者：姜永涛[1] 张永志[1] 王帅[1] 魏玉明[1] 

机构地区：[1]长安大学,西安710000

出　　处：《大地测量与地球动力学》2014年第6期60-65,共6页Journal of Geodesy and Geodynamics

基　　金：国家自然科学基金项目(41374028;41274083;41304013);中央高校基本科研业务费专项(CHD2012TD004);长安大学基础研究支持计划专项;国土资源大调查项目(1212010914015)

摘　　要：利用最新发布的CRUST1.0地壳模型,基于1D岩石圈均衡理论,推导了一种快速求算地热岩石圈结构的方法,并计算了中国大陆及邻域岩石圈结构。中国大陆及周边区域的岩石圈厚度存在巨大的横向差异性,但从整体上看,在中西部,岩石圈厚度走向大致与印度板块和亚欧板块的碰撞带走向一致;在中东部,其走向与太平洋板块和菲律宾海板块对亚欧板块的俯冲带走向大致相同。结合其他学者对该区岩石圈结构的研究可知,中国大陆及邻域的岩石圈结构特征不仅与地块的地质年龄有关,可能更多的是受区域构造环境和岩石圈减薄机制的影响。A method based on the assumption of lithospheric local isostasy and CRUST1.0 model was deduced and a map of lithospheric thickness was made. The main lithospheric structure of China mainland and neighourhood was calculated with the method. Results of analyzing the main lithospheric structure by the aspects of the regional tectonic background and the mechanism of lithospheric thinning indicate that the lithospheric structure characteris- tics are not only associated with the geological age of blocks, but also maybe more are influenced by regional tecton- ic environment and mechanism of lithospheric thinning.

关 键 词：CRUST1.0 均衡理论 中国及邻域 岩石圈结构特征 地质年龄 

分 类 号：P315.2[天文地球—地震学]