%0 Journal Article
%T A preliminary study on electrical structure and dynamics of the ultra_high pressure metamorphic belt beneath the Dabie Mountains<br>大别山超高压变质带深部电性结构及其动力学意义初步研究
%A XIAO Qi_Bin
%A ZHAO Guo_Ze
%A ZHAN Yan
%A CHEN Xiao_Bin
%A TANG Ji
%A WANG Ji_Jun
%A DENG Qian_Hui
%A <br>肖骑彬
%A 赵国泽
%A 詹艳
%A 陈小斌
%A 汤吉
%A 王继军
%A 邓前辉
%J 地球物理学报
%D 2007
%I 
%X Magnetotelluric data along a profile in the East Dabie Mountains has been collected along the profile across the ultra-high pressure metamorphic belt of NNE direction. According to the two-dimensional electrical structure of crust-upper mantle of the Dabie orogen, the North Huaiyang tectonic belt and Dabie block are different tectonic units in electrical structure. They are separated by the Xiaotian-Mozitan fault, which dips north and shows decoupling at the mid-upper crust level. Four electrical layers can be determined from surface to depth, which are the surficial weathering layer, the mid-upper crust high resistivity layer, the inner-crust relatively high conductive layer and the mantle layer. In the Dabie block, the mid-upper crust is mainly of high resistivity, corresponding to the distribution area of high-ultrahigh pressure metamorphic rock, its thickest place is between Yuexi and Yingshan. In the Dabie block, there maybe exist channels of granitic magma activity of the Yanshan Period, which make further uplift of the ultra-high pressure metamorphic rocks and affect the distribution of inner-crust high conductive layers and cause great difference in depth of the high conductive layer.
%K Ultra-high pressure metamorphic belt
%K Electrical structure of depth
%K Dynamics
%K Magnetotellurics
%K Dabie orogen<br>超高压变质带
%K 深部电性结构
%K 动力学
%K 大地电磁测深
%K 大别造山带
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=965E9AB36F238377&yid=A732AF04DDA03BB3&vid=771152D1ADC1C0EB&iid=38B194292C032A66&sid=525CF7714FCB18E2&eid=F7C11D7E3E8C5D3F&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=3&reference_num=58