(Table 1) Radiocarbon ages of Bivalvia shells obtained from core ASV13_1157, Novaya Zemlya Trench

It is shown that sediments accumulated in the Southern Novaya Zemlya Trench at both deglaciation and marine stages. Permanent sea ice sheet existed during the deglaciation, and glacier meltwater was intensely delivered to the bottom layer. Along with the dominant sediment supply from the Southern Is...

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Bibliographic Details
Main Authors: Levitan, Mikhail A, Belyaev, Nikolay A, Burtman, M V, Duplessy, Jean-Claude, Khusid, Tatyana A
Format: Dataset
Language:English
Published: PANGAEA 2003
Subjects:
Age
14C AMS
14C calibrated
14C milieu/reservoir corrected (-400 yr)
dated
dated material
dated standard deviation
Akademik Sergey Vavilov
Archive of Ocean Data
ARCOD
ASV13
ASV13_1157-GC
Calendar age
DEPTH
sediment/rock
GC
Gravity corer
off Novaja Zemlya
Sample ID
Arctic
Southern Island
Foraminifera*
Ice Sheet
Novaya Zemlya
Sea ice
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.793028
https://doi.org/10.1594/PANGAEA.793028
Description
Summary:It is shown that sediments accumulated in the Southern Novaya Zemlya Trench at both deglaciation and marine stages. Permanent sea ice sheet existed during the deglaciation, and glacier meltwater was intensely delivered to the bottom layer. Along with the dominant sediment supply from the Southern Island of Novaya Zemlya, southern continental sources also played a noticeable role at that stage. Seasonal sea ice freezing led to the formation of cold brines at the marine stage. Like paleoproductivity, these processes were irregular. Dissolution of calcareous benthic foraminiferal tests considerably intensified after about 7 ka BP owing to a stronger Atlantic water advection into the Western Arctic and consequent increase in paleoproductivity, whereas the relative role of southern sedimentary provenances decreased. Sedimentation rates were constant (45 cm/ka) during the entire marine stage.

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