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Thermal Properties of Rocks in the Republic of Korea  

Park, Jeong-Min (Geological Research Division, Korea Institute of Geoscience and Mineral Resources)
Kim, Hyoung-Chan (Geological Research Division, Korea Institute of Geoscience and Mineral Resources)
Lee, Young-Min (Geological Research Division, Korea Institute of Geoscience and Mineral Resources)
Shim, Byoung-Ohan (Geological Research Division, Korea Institute of Geoscience and Mineral Resources)
Song, Moo-Young (Chungnam National University)
Publication Information
Economic and Environmental Geology / v.42, no.6, 2009 , pp. 591-598 More about this Journal
Abstract
We made 2511 thermal property measurements on igneous, metamorphic, and sedimentary rock samples from Korea. The average thermal conductivities of igneous, metamorphic, and sedimentary rocks are 3.10 W/m-K, 3.76 W/m-K, and 3.54 W/m-K, respectively. Igneous rock can be classified into pluton, hypabyssal rock, and volconic rock; the average thermal conductivities of those rock types are 3.16 W/m-K, 3.26 W/m-K, and 2.77 W/m-K, respectively. Nonclastic sedimentary rock has higher thermal conductivity than clastic sedimentary rock. Thermal conductivity of Palezoic era rock is higher than Mesozoic era rock, because dominant mineral contents play an important role in the determination of thermal conductivity. Thermal conductivity of rocks is influenced by porosity. Therefore thermal conductivity of sedimentary rocks generally decreases with increasing porosity. Thermal conductivity and thermal diffusivity show linear correlation, its correlation coefficient of igneous, metamorphic, and sedimentary rocks are 0.775, 0.855, and 0.876, respectively.
Keywords
Thermal conductivity; thermal diffusivity; mineral contents; porosity;
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Times Cited By KSCI : 2  (Citation Analysis)
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