【摘要】 <正> 近年来为配合华北大地热流和华北地温场等研究工作,我所地热研究室在华北地区内的任邱、大港、胜利、下辽河等油田及其周围山区的钻孔中取了大量岩芯,并同时在这些钻孔中进行了测温。这些钻孔在构造上位于冀中拗陷、黄骅拗陷、济阳拗陷、下辽河拗陷和沧县隆起、胶辽隆起区、鲁西隆起区、太行山隆起区及燕山褶皱带(图1)。隆起区的钻孔大部位于其山间盆地中。共取岩芯样品810个,其中沉积岩610个,火成岩和变质岩200个。其详更多还原

【Abstract】 For recent years a vast amount of drill core samples has been tested for thermal conductivity determination using the steady-state parallel-plate and transient ring heat-source thermal conductivity meters installed in the laboratory of the Geothermal Research Division in our institute to meet the heat flow measurements and temperature field study in North China. Based on the experimental data this paper gives a systematic summarization and classification of the thermoconductive properties for the sedimentary strata, basement rocks and igneous rocks in the upper part of the crust in North China. In the vertical direction five thermoconductive structure layers were identified from the surface to depths:1. Low-conductive layer of clastic sedimentary strata;2. Medium-conductive layer of clastie sedimentary strata;3. Medium-conductive layer of thick limestone deposits;4. High-conductive layer of sedimentary rocks with predominant dolomitic composition5. Medium-conductive crystalline basement.In the meantime, the controlling factors for the vertical zonation were discussed. An embryonic form of the thermal structure of North China crust was suggested by the authors.更多还原