Detailed Carbonate Stratigraphy of the Japan Sea Sediments During Last Glaciation-Holocene

日本海沈積物上次冰河期至全新世之碳酸鹽地層

Sergei A. Gorbarenko；Svetlana G. Pliss；John R. Southon；Michael Kashgarian；Natalya B. Verkhovskaya；Alexander S. Kundyshev

Carbonate stratigraphy ； Japan Sea ； Sediment

Terrestrial, Atmospheric and Oceanic Sciences

6卷1期（1995 / 03 / 01）

103 - 113

英文

Cores J-3-RGA, J-11-RGA (south and central part of the Japan Sea) were studied for δ^(18)O, palynological analyses, determination of carbonate and organic carbon content in sediments and dating by AMS methods. New AMS data on the J-11 core helped to identify the age of A-Tn volcanic ash as 25thousand years. The Synthesis of the obtained data and the data provided by other cores taken in the Japan Sea reveal the detailed carbonate stratigraphy of the Japan Sea sediments for the last 25Ky formed in the course of the paleoceonographic evolution of the basin. The carbonate horizons (CH) 1, 2, 3, are the result of the last glaciation event; they are related to the sea level regression and the semireduction condition of the bottom. The CH4 and CH5 horizons were formed during the transition period, and probably correlate with the cold events of Oldest and Younger Dryas. The CH6 and CH7 were accumulated in Holocene sediments, and they are related to insufficient changes in the Japan Sea environment.