(Table 1) The 10Be and 9Be isotope record of IODP EXP202 composite Site ...

The upper 200 m of the sediments recovered during IODP Leg 302, the Arctic Coring Expedition (ACEX), to the Lomonosov Ridge in the central Arctic Ocean consist almost exclusively of detrital material. The scarcity of biostratigraphic markers severely complicates the establishment of a reliable chron...

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Bibliographic Details
Main Authors: Frank, Martin, Backman, Jan, Jakobsson, Martin, Vescovali, Isabelle, O'Regan, Matthew, King, John W, Haley, Brian A, Kubik, Peter W, Garbe-Schönberg, Dieter
Format: Dataset
Language:English
Published: PANGAEA 2008
Subjects:
Event label
DEPTH, sediment/rock
Sample code/label
AGE
Beryllium-10
Beryllium-10, standard deviation
Beryllium-9
Beryllium-10/Beryllium-9
Beryllium-10/Beryllium-9, standard deviation
Piston corer
DSDP/ODP/IODP sample designation
Inductively coupled plasma - mass spectrometry ICP-MS
Exp302
ODEN-96
CCGS Captain Molly Kool Vidar Viking
Oden
Integrated Ocean Drilling Program / International Ocean Discovery Program IODP
International Polar Year 2007-2008 IPY
Arctic
Arctic Ocean
International Polar Year
IPY
Lomonosov Ridge
Sea ice
Online Access:https://dx.doi.org/10.1594/pangaea.734478
https://doi.pangaea.de/10.1594/PANGAEA.734478
Description
Summary:The upper 200 m of the sediments recovered during IODP Leg 302, the Arctic Coring Expedition (ACEX), to the Lomonosov Ridge in the central Arctic Ocean consist almost exclusively of detrital material. The scarcity of biostratigraphic markers severely complicates the establishment of a reliable chronostratigraphic framework for these sediments, which contain the first continuous record of the Neogene environmental and climatic evolution of the Arctic region. Here we present profiles of cosmogenic 10Be together with the seawater-derived fraction of stable 9Be obtained from the ACEX cores. The down-core decrease of 10Be/9Be provides an average sedimentation rate of 14.5 ± 1 m/Ma for the uppermost 151 m of the ACEX record and allows the establishment of a chronostratigraphy for the past 12.3 Ma. The age corrected 10Be concentrations and 10Be/9Be ratios suggest the existence of an essentially continuous sea ice cover over the past 12.3 Ma. ... : DEPTH, sediment/rock [m] is given in mcd. Hiatusus in 302-M0002a between 135.49 and 140.44 mcd, in 96/09-1pc between 1.69 and 1.79 mcd. Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...

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