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Palynofloral analysis was performed for the first time on sediment from the Ulleung Basin (East Sea, offshore Korea) to locate the Pliocene–Pleistocene boundary, which is very important in determining the depositional age of a stratigraphic unit that contains methane hydrate. Cores from the drill sites Ulleung Basin Gas Hydrate 1–9 (UBGH1–9) and Ulleung Basin Gas Hydrate 1–10 (UBGH1–10) in the Ulleung...
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