Sedimentary facies characteristics and age determination of giant piston cores from the Ulleung Basin and continental slope in the East Sea

Title
Sedimentary facies characteristics and age determination of giant piston cores from the Ulleung Basin and continental slope in the East Sea
Author(s)
김진경; 허식; 조진형; 신동혁; 현상민; 유규철; 이용국
KIOST Author(s)
Cho, Jin Hyung(조진형)Shin, Dong Hyeok(신동혁)Hyun, Sang Min(현상민)Lee., Yong Kuk(이용국)
Alternative Author(s)
허식; 조진형; 신동혁; 현상민; 이용국
Publication Year
2017-04-19
Abstract
Three giant piston cores, ISA-16ESUB-2A, -2B, and – 5 were obtained from the Ulleung Basin and continental slope in the East Sea during the R/V ISABU test cruise in 2016. The cores consist of four mud facies (bioturbated mud, crudely laminated mud, homogeneous mud, and laminated mud) and include four distinctive tephra layers (U-Oki, AT, Aso-4, and Aso-3 tephras). The ages of the cores were primarily constrained by accelerator mass spectrometry (AMS) 14C dates, using planktonic foraminifera (G. bulloides) and organic matters, and the four well-known tephra layers. The sediment lightness (L*) values were correlated with those for core MD01-2407, whose age was constrained up to 640 kyr BP. As a result of the age determination, the ages of the bases of the cores were found to be 140 kyr, 170 kyr, and 75 kyr, respectively. The longest core of these cores records paleoceanographic variations from Marine Isotope Stage (MIS) 6 to the present day. laminated mud, homogeneous mud, and laminated mud) and include four distinctive tephra layers (U-Oki, AT, Aso-4, and Aso-3 tephras). The ages of the cores were primarily constrained by accelerator mass spectrometry (AMS) 14C dates, using planktonic foraminifera (G. bulloides) and organic matters, and the four well-known tephra layers. The sediment lightness (L*) values were correlated with those for core MD01-2407, whose age was constrained up to 640 kyr BP. As a result of the age determination, the ages of the bases of the cores were found to be 140 kyr, 170 kyr, and 75 kyr, respectively. The longest core of these cores records paleoceanographic variations from Marine Isotope Stage (MIS) 6 to the present day.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/24086
Bibliographic Citation
2017 한국해양과학기술협의회 공동학술대회, pp.210, 2017
Publisher
한국해양학회
Type
Conference
Language
English
Publisher
한국해양학회
Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse