Glacial-interglacial records from sediments in Powell Basin, Antarctica

被引：3

作者：

Bak, Young-Suk ^{[1
]}

Yoo, Kyu-Cheul ^{[2
]}

Lee, Jae Il ^{[2
]}

Yoon, Ho Il ^{[2
]}

机构：

[1] Chonbuk Natl Univ, Earth & Environm Syst Res Ctr, Jeonju 54896, South Korea

[2] Korea Polar Res Inst, 26 Songdomirae Ro, Incheon 21990, South Korea

来源：

ANTARCTIC SCIENCE | 2018年 / 30卷 / 06期

基金：

新加坡国家研究基金会;

关键词：

diatom zones; GC01-PW02; GC03-PW02; MIS; 6; SOUTHERN-OCEAN SEDIMENTS; SEASONAL DIATOM RECORD; WESTERN ROSS SEA; PRYDZ BAY; ICE; BIOGEOGRAPHY; ASSEMBLAGES; SHELF; TAXA; DEEP;

D O I：

10.1017/S0954102018000408

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Palaeoenvironmental history is reconstructed from diatoms in two sediment cores, GC01- PW02 and GC03-PW02, recovered from Powell Basin, Antarctica. A total of 43 species belonging to 21 genera are identified from GC01-PW02. A total of 61 species belonging to 27 genera are identified from GC03-PW02. The number of diatom valves g(-1) of dry sediment ranges from 0.1-48.3 x 10(6) valves g(-1). Based on diatom abundance, six assemblage zones were identified from GC01-PW02, and five diatom zones were identified from GC03-PW02. Barren intervals represent glacial periods, while intervals with higher diatom abundances were deposited during interglacial periods and reduced sea ice cover. The occurrence of Rouxia leventerae only within the deepest zone of each of the cores indicates that the core sediments were deposited since marine isotope stage (MIS) 6.

引用

页码：371 / 378

页数：8

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