In its geological structure Korea is predominantly a part of the East Asian continent that has few features in common with the island arcs festooned along the coast of the continent. The prevalence of crystalline schists and granites, which together cover much more than half of its surface, and the almost complete lack of active volcanoes link it with southeastern Manchuria and Shandong, but distinguish it from the Japanese islands. There are close relationships between northern Korea and southeastern Manchuria in the trend of the crystalline schists, the stratigraphy of the surface rocks and the significance of recent basalt flows. The stratigraphy of the extreme northeast, which is encircled by the Tumen, is related to that of eastern Manchuria and the southern Ussuri region. The Hwanghae peninsula is correspondingly related in part to the Liaodong peninsula, and in part to Shandong. Only the southeastern portion of the country, especially the Naktonggang basin, which consists primarily of Cretaceous rocks, went through the same development as the Tsushima islands, northwestern Kyūshū and western Chūgoku in this period. More closely related to the Japanese islands are Ul- lŭngdo and Chejudo, the Korean islands that lie closest to Japan.
KeywordsWild Boar Traditional Culture Weather Type Foxtail Millet Cold Wave
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