Diatom oxygen and silicon isotopes data from IODP Hole 323-U1341B in the Bering Sea through the late Pliocene and over the onset of major Northern Hemisphere Glaciation ...

The Bering Sea is one of the most biologically productive regions in the marine system and plays a key role in regulating the flow of waters to the Arctic Ocean and into the subarctic North Pacific Ocean. Cores from Integrated Ocean Drilling Program (IODP) Expedition 323 to the Bering Sea provide th...

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Bibliographic Details
Main Authors: Swann, George E A, Snelling, Andrea M, Pike, Jennifer
Format: Dataset
Language:English
Published: PANGAEA 2016
Subjects:
Code
Sample code/label
Depth, top/min
Depth, bottom/max
DEPTH, sediment/rock
Depth, composite
AGE
Diatoms, δ18O
Diatoms, δ30Si
Drilling/drill rig
DSDP/ODP/IODP sample designation
Mass spectrometer, Finnigan, MAT 253
Exp323
Joides Resolution
Integrated Ocean Drilling Program / International Ocean Discovery Program IODP
Arctic Ocean
Bering Sea
Sea ice
Subarctic
Online Access:https://dx.doi.org/10.1594/pangaea.866302
https://doi.pangaea.de/10.1594/PANGAEA.866302
Description
Summary:The Bering Sea is one of the most biologically productive regions in the marine system and plays a key role in regulating the flow of waters to the Arctic Ocean and into the subarctic North Pacific Ocean. Cores from Integrated Ocean Drilling Program (IODP) Expedition 323 to the Bering Sea provide the first opportunity to obtain reconstructions from the region that extend back to the Pliocene. Previous research at Bowers Ridge, south Bering Sea, has revealed stable levels of siliceous productivity over the onset of major Northern Hemisphere Glaciation (NHG) (circa 2.85-2.73 Ma). However, diatom silica isotope records of oxygen (d18Odiatom) and silicon (d30Sidiatom) presented here demonstrate that this interval was associated with a progressive increase in the supply of silicic acid to the region, superimposed on shift to a more dynamic environment characterized by colder temperatures and increased sea ice. This concluded at 2.58 Ma with a sharp increase in diatom productivity, further increases in photic zone ... : Supplement to: Swann, George E A; Snelling, Andrea M; Pike, Jennifer (2016): Biogeochemical cycling in the Bering Sea over the onset of major Northern Hemisphere Glaciation. Paleoceanography, 31(9), 1261-1269 ...

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