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학제간연구 과학기술학 뇌인지과학 기술정책 기타 복합학

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논문 기본 정보

자료유형
학술저널
저자정보
Kim, Ju-Yong (Landslides/Quaternary Environmental Research Section, Geological and Environmental Hazard Department) Yang, Dong-Yoon (Landslides/Quaternary Environmental Research Section, Geological and Environmental Hazard Department) Bong, Pil-Yoon (Petroleum and Gas Research Section, Petroleum and Marine Resources Department. Korea Institute of Geo-Science and Mineral Resources) Nahm, Wook-Hyun (Landslides/Quaternary Environmental Research Section, Geological and Environmental Hazard Department) Lee, Heon-Jong (Department Archaeology, Mokpo National University) Lee, Yung-Jo (Dept. of Archaeology and Art History, Chungbuk National University) Hong, Sei-Sun (Landslides/Quaternary Environmental Research Section, Geological and Environmental Hazard Department) Lee, Jin-Young (Landslides/Quaternary Environmental Research Section, Geological and Environmental Hazard Department) Kim, Jin-Wkan (Landslides/Quaternary Environmental Research Section, Geological and Environmental Hazard Department) Oh, Keun-Chang (Landslides/Quaternary Environmental Research Section, Geological and Environmental Hazard Department)
저널정보
한국제4기학회 제4기학회지 제4기학회지 제17권 제2호
발행연도
2003.1
수록면
17 - 23 (7page)

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초록· 키워드

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In Korea terrestrial fluvial sequences can be used as pedological and sedimentological markers indicating a millenium-scale environmental and climatic changes imprinted in fluvial sub-environments, which in turn are represented by the cyclicity of fluvial sands, backswamp organic muds, and flooding muds intercalations of frostcracked or dessicated brown paleosols. Post LGM and Holocene fluvial and alluvial sedimentary sequences of Korea are formed in such landscapes of coastal, floodplain, backswamp and hillslope areas. Among them, the most outstanding depositional sequences are fluvial gravels, sands and organic mud deposits in coastal, fluvial, or alluvial wetlands. The aim of this study is to explain the sedimentary sequences and palynofloral zones since the last 15,000years, on the basis of organic muds layers intercalated in fluvial sand deposits. Jangheung-ri site of Nam river, Soro-ri site of Miho river, Youngsan rivermouth site in Muan, Oksan-ri site of Hampyeong and Sanggap-ri site of Gochang are illustrated to interpret their sedimentary facies, radiocarbon datings, and palynofloral zonation. Up to the Middle to Late Last Glacial(up to 30-35Ka), old river-bed, flooding, and backswamp sequences contain such arboreal pollens as Pinus, Abies, and Picea, and rich in non-arboreal pollens like Cyperaceae, Gramineae, Ranunculaceae, and Compositae. During the LGM and post-LGM periods until Younger Dryas, vegetation has changes from the sub-alpine conifer forest(up to about 17-11Ka), through the conifer and broad-leaved deciduous forest, or mixed forest (formed during 16,680-13,010yrB.P), to the deciduous and broad-leaved forest (older than 9,500yrB.P). In the Earliest Holocene flooding deposits, fragments of plant roots are abundant and subjected to intensive pedogenic processes. During Holocene, three arboreal pollen zones are identified in the ascending order of strata； Pinus-Colyus zone(mixed conifer and deciduous broad-leaved forest, about up to 10Ka), Alnus-Quercus forest (the cool temperate deciduous broad-leaved forest, about 10Ka-2Ka), and Pinus forest (the conifer forest, about after 2Ka), as examplified in Soro-ri site of Cheonwon county. The palynological zonations of Soro-ri, Oksan-ri, Sanggap-ri, Youngsan estuary, and Gimhae fluvial plain have been recognized as a provisional correlation tool, and zonations based on fluvial backswamp and flooding deposits shows a similar result with those of previous researchers.
#Last Glacial #LGM #fluvial #floodplain #backswamp #palynofloral

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