Geochemistry of surface sediments off the southern and western coasts of Korea

摘要: Abstract The continental shelf off the southern and western side of Korean Peninsula is part a modern epicontinental sea, an effective sediment trap for clastic material derived from China Korea. We have analyzed 179 surface samples this Al, Fe, Na, K, Mg, Ca, Ti, P, Mn, Sr, Ba, V, Cr, Co, Ni, Cu, Zn, organic carbon calcium carbonate in order to determine geochemical characteristics these sediments. Results showed wide range element contents which are mainly related textural variability Exceptions were found Sr Ba. Ca largely determined by amounts present. K content, on other hand, appeared be influenced both illite feldspar, potassium feldspar. For muds (i.e., sediments deposited under present-day conditions), it possible distinguish those central Yellow Sea Keum Estuary: former characterized high latter Ba Co. These differences become more apparent when elements normalized relative Al minimize grain size effects. distribution V/Al ratios different that elements: highest values occur Huanghe (the River China), whereas Mn/Al nearshore area adjacent Peninsula. Based results, suggested sources fine South Seas can distinguished In Sea, two fine-grained seen, River. higher V Mn contents. Using ratio as end-member component source materials, dispersal patterns (>6O) also derived.