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http://dx.doi.org/10.7854/JPSK.2017.26.3.167

Topographical Landscapes and their Controlling Geological Factors in the Cheongryangsan Provincial Park: Lithologic Difference and Faults  

Hwang, Sang Koo (Department of Earth and Environmental Science, Andong National University)
Son, Young Woo (Department of Earth and Environmental Science, Andong National University)
Son, Jin Dam (Honorary Researcher, Korea Institute of Geoscience and Mineral Resources)
Publication Information
The Journal of the Petrological Society of Korea / v.26, no.3, 2017 , pp. 167-181 More about this Journal
Abstract
Cheongryangsan area ($49.51km^2$) has been designated as the Provincial Park in 1982, because it has magnificent aspect and seasonally spectacular landscapes. Especially, Cheongryangsa sitey ($4.09km^2$) has been designated as Noted Scenery No. 23 in 2007, because it has the same topographical landscape as rock cliffs, rock peaks and caves. The most spectacular landscapes are exhibited in the Cheongryangsan Conglomerate and Osipbong Basalt. There are twelve rock peaks on the ridges of the two strata, and many rock cliffs in the several valleys of strata, in which a few caves are formed by differential weathering and erosion. The valleys, in which flow Cheongryang, Bukgok and Cheonae streams, are classified as fault valleys along WNW-ESE faults. The rock cliffs were generated from vertical joints parallel to WNW-ESE faults in the two strata, and the caves were formed by differential weathering and erosion along bedding of sandstones and shales intercalated in the conglomerates. The rock peaks are landscapes formed by differential erosion along crossed vertical joints in the ridges. The vertical joints are developed subparallel to two WNW-ESE faults and a NNE-WWS fault. Therefore the topographical features are caused by existence of the faults and Lithologic difference in the Cheongryangsan Conglomerate and Osipbong Basalt, and by differential weathering and erosion along them.
Keywords
Cheongryangsan National Park; Topographical landscape; Cheongryangsan Conglomerate; Osipbong Basalt; Rock cliff; Vertical joint; Lithologic difference;
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