GISP2 10Be Concentration, 40,000 Years, Finkel and Nishiizumi 1997Entry ID: NOAA_NCDC_PALEO_FINKEL
Abstract: Melted water was collected from the outside of samples taken for cation and
anion analysis. A small aliquot was taken for anion analysis (chloride,
nitrate, and sulfate) and the remainder was weakly acidified with HNO3 to yield
a final pH of about 2. Be, Cl and Al carriers were then added. The Be (and Al
and Cl) were concentrated from the melted ice using ion exchange resins. Be
was then ... eluted from the cation exchange column, precipitated as Be(OH)2 and
ignited to BeO for accelerator mass spectrometry (AMS) measurement. The AMS
measurements were carried out at the Lawrence Livermore National Laboratory
Center for Accelerator Mass Spectrometry (Davis et al., 1990). The 10Be
(half-life = 1.5 x 10^6 years) concentration was normalized to an ICN standard
(diluted by K. Nishiizumi) after carrier blank and boron background correction.
Data Set Citation
Dataset Originator/Creator: Finkel, R.C., and K. Nishiizumi
Dataset Title: 10Be concentration (103 atom/g) in GISP2 ice, 719 - 2253 m
Dataset Release Place: Boulder, CO
Dataset Publisher: NOAA/NCDC/WDC PaleoclimatologyOnline Resource: ftp://ftp.ncdc.noaa.gov/pub/data/paleo/icecore/greenland/summit/gis...
Paleo Temporal Coverage
Paleo Start Date: 40,000 ybp
Paleo Stop Date: 0 ybp
Data Set Progress
Distribution Media: online ftp
Distribution Format: text
Phone: (925) 422-2044
Fax: (925) 422-0208
Email: finkel1 at llnl.gov
Province or State: CA
Postal Code: 64550
Email: kuni at ssl.berkeley.edu
University of California Space Sciences Lab 7 Gauss Way
Province or State: CA
Postal Code: 94720-7450
Finkel, R.C., and K. Nishiizumi. 1997. Beryllium 10 concentrations in the
Greenland Ice Sheet Project 2 ice core from 3-40 ka. Journal of Geophysical Research 102:26699-26706.
Alley, R.B., R.C. Finkel, K. Nishiizumi, S. Anandakrishnan, C.A. Shuman,
G.R. Mershon, G.A. Zielinski, and P.A. Mayewski. 1995. Changes in continental and sea-salt atmospheric loadings in central Greenland during
the most recent deglaciation: Model-based estimates. Journal of Glaciology
Davis, J.C., I.D. Proctor, J.R. Southon, M.W. Caffee, D.W. Heikkinen, M.L.
Roberts, T.L. Moore, K.W. Turteltaub, D.E. Nelson, D.H. Loyd, and J.S.
Vogel. 1990. LLNL/UC AMS facility and research program. Nuclear Instruments and Methods in Physics Research B52:269-272.
Creation and Review Dates
DIF Creation Date: 2004-11-08
Last DIF Revision Date: 2004-11-08