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Weathering Properties and Provenance of Loess-Paleosol Sequence Deposited on River Terrace in the Bongdong Area, Wanju-gun, Jeonbuk Province  

Hwang, Sang-Ill (Department of Geography, Kyungpook National University)
Park, Chung-Sun (Department of Geography, Kyunghee University)
Yoon, Soon-Ock (Department of Geography and Research Institute for Basic Sciences, Kyunghee University)
Publication Information
Journal of the Korean Geographical Society / v.44, no.4, 2009 , pp. 463-480 More about this Journal
Abstract
The weathering properties and provenance of loess-paleosol sequence deposited on gravel layer of river terrace in Bongdong-eup, Wangju-gun, Jeonbuk Province are examined using soil analysis, magnetic susceptibility measurement, grain size and element analysis. The Bongdong section consists of, from top to bottom, Layer 1(paleosol), Layer 2(loess), Layer 3(paleosol) and the gravel layer of river terrace. The magnetic susceptibility values show the systematic variations in the sequence and the results of grain size analysis reveal that the sequence was deposited by not fluvial or slope process, but eolian process, and that contains finer materials than the Daecheon loess and Chinese Loess Plateau. Among the results of soil analysis, organic contents indicate systematic variations similar to the magnetic susceptibility. The wet soil colors further reflect the characteristics of the sequence rather than the dry soil colors. Based on the analytical results of major and rare earth elements, the eolian materials contained in the sequence were deposited by the materials originated from the areas where the Chinese Loess Plateau has been originated or the reworked materials from the Chinese Loess Plateau, and after the depositions, the materials experienced the intensive chemical weathering under the humid-warm climatic conditions in the Korean Peninsula.
Keywords
loess; paleosol; magnetic susceptibility; weathering properties; provenance; Mangyeong-river;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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