Silica oxygen isotope record of core PC10 diatoms from the Bransfield Strait, Antarctica and its application in sedimentology

• Main Authors: Weiwu, Duan, Xuejie, Li, Youlin, Shen
• Format: Article in Journal/Newspaper
• Language: English
• Published: Polar Research Institute of China - PRIC 1998
• Subjects: West Antarctica; Bransfield Strait; Advances in Polar Science; Antarc*; Antarctica; Polar Science
• Online Access: http://library.arcticportal.org/2145/; http://library.arcticportal.org/2145/1/A801.000.pdf

51 diatom samples taken from the piston core PC10 in the Bransfield Strait of West Antarctica were determined by using silica oxygen isotope analysis. The diatoms-based results reveal that the 753 cm long core PC10 was deposited in the area in the last 112.5 ka B.P. , representing 1 - 5 oxygen isotopic stages and including one incomplete glacial/interglacial cycle and a postglacial period. The sedimentation rate in interglacial period seems to be a little higher than that in glacial, owing to the more terrigenous supply by ice-rafting during the interglacial stages.