| Abstract |
The heat flow anomaly in South Korea was analyzed with Geographic Information System (GIS) using spatial overlay analysis technique in the aspects of lithology, geologic time and Mohorovicic (Moho) depth. A total of 247 heat flow data over South Korea were constructed to the spatial database (D/B) and digital geologic map including lithology, geologic time, and Moho depth was also made. The average of heat flow is 64 ± 14 mW/m2 in South Korea. In the aspect of lithology, the area of sedimentary rock contains high heat flow of 74 mW/m2, sedimentary/volcanic rock area 62 mW/m2, plutonic rock area 63 mW/m2, and metamorphic rocks area 61 mW/m2. In the geologic time sequence, the Cenozoic strata has 91 mW/m2, the Mesozoic and Paleozoic strata 65 mW/m2, the Proterozoic strata 55 mW/m2, and the Archean strata has 61 mW/m2. In Moho depth aspect, the shallow depth area has higher heat flow than the area of thick crust. As a result of the tabulate analysis, the southeastern part of Korean Peninsula appeared to be the highest heat flow anomaly. |