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http://dx.doi.org/10.5467/JKESS.2016.37.6.325

Paleoenvironmental Research Using Diatoms from Core Sediments in the Heuksan Mud belt, Korea  

Bak, Young-Suk (Department of Earth and Environmental Sciences, Chonbuk National University)
Chang, Tae Soo (Petroleum and Marine Research Division, Korea Institute of Geoscience and Mineral Resources)
Publication Information
Journal of the Korean earth science society / v.37, no.6, 2016 , pp. 325-331 More about this Journal
Abstract
Three diatom assemblage zones were erected from HMB-103 core sediment of the Heuksan Mud Belt. The paleoenvironmental changes were reconstructed basing on diatom analyses using indicator species, cold and warm water species, and salinity. Seventy-six species belonging to 41 genera were identified in the core sediments. The number of diatom valves per gram of dry sediment ranged from 0.1 to $15.4{\times}10^4g^{-1}$. As a result, diatom assemblage I in about 45,000 yr B.P showed a high abundance in cold species indicating a major influence by the Korea Coastal Current. Diatom assemblage II from 14,000 to 11,646 yr B.P is characterized by rare abundance and indicative of the cold periods at Younger Dryas with the lower sea-level. However, diatom assemblage III from 11,646 yr B.P to Holocene was more affected by the Yellow Sea Warm Current while the progressive sea level rise.
Keywords
Heuksan Mud belt; HMB-103; diatom assemblage zone; Korea Coastal Current; Yellow Sea Warm Current;
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