%0 Journal Article
%T Thermal conductivity and its anisotropy of rocks from the depth of 100 -2000m mainhole of Chinese Continental Scientific Drilling: revelations to the study on thermal structure of subduction zone<br>中国大陆科学钻探主孔100～2000m岩石热导率及其各向异性：对研究俯冲带热结构的启示
%A OU XinGong
%A JIN Zhenlin
%A Wang Lu
%A XU HaiJun
%A JIN ShuYan Guangzhou Institute of Geochemistry
%A Chinese Academy of Sciences
%A Guangzhou
%A China Faculty of Earth Sciences
%A China University of Geosciences
%A Wuhan
%A China
%A <br>欧新功
%A 金振民
%A 王璐
%A 徐海军
%A 金淑燕
%J 岩石学报
%D 2004
%I 
%X Thermal conductivity of the cores from CCSD 2000m-mainhole of different rocks are systematically investigated. Basically research on the relationship between the thermal conductivity and the components of minerals in rocks are studied. The anisotropy of thermal conductivity and its possible influencing factors are discussed for the rocks in Donghai area. The thermal conductivity of the cores from 2000m-mainhole varies from 1. 873 to 4.062 Wm -1 K -1 with the average value of 2. 967 Wm -1 K -1 for about 300 samples. The main peak of frequency distribution for total samples occurred between 2.8 -3.0 Wm -1 K -1. The thermal conductivity distribution of eclogite located in 3. 6-3.7 Wm -1K-1 for fresh eclogite, 3. 1 -3.2 Wm -1K-1 for retrograde samples and 2. 4-2. 5 Wm -1K-1 for intensively retrograde eclogite, which show the clear correlation with the degree of retrogression. The thermal conductivity of gneiss is distributed at 2. 8 - 3. 0 Wm -1K-1. In vertical profile from 100 to 735m of mainhole has the higher thermal conductivity in average 3.265 Wm -1K-1 because of the eclogite in the layer. On the contrary, the layer from 1200 to 1600m mainly made up of orthogneiss and has the lower thermal conductivity in average 2. 755 Wm K . Measurements on the foliation-developed core samples indicate that the anisotropy of thermal conductivity occurs in different rocks. The value of thermal anisotropy varies from 4. 66% for eclogite to 22. 99% for gneiss, and the ultra-mafic rocks have the average value of 3. 322 Wm -1K-1 in thermal conductivity and the anisotropy of 16. 08%. The anisotropy of thermal conductivity depends on the azimuth of the measurement relative to the foliation and the maximum and minimum values are occurred when the measurements are parallel and perpendicular to the foliation, respectively.
%K Ultrahigh-pressure rocks
%K Thermal conductivity
%K Anisotropy
%K CCSD
%K Donghai<br>超高压岩石
%K 热导率
%K 各向异性
%K 中国大陆科学钻探
%K 东海
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=621CF755B1A341E5&jid=2013B5467E3054B1614CEC199353FCED&aid=63706DD3441528AA&yid=D0E58B75BFD8E51C&vid=A04140E723CB732E&iid=CA4FD0336C81A37A&sid=91C9056D8E8856E0&eid=7F5DDA4924737DF5&journal_id=1000-0569&journal_name=岩石学报&referenced_num=13&reference_num=46