FN Archimer Export Format
PT J
TI A paleomagnetic approach toward refining Holocene radiocarbon-based chronologies: Paleoceanographic records from the north Iceland (MD99-2269) and east Greenland (MD99-2322) margins
BT 
AF STONER, Joseph S.
   JENNINGS, Anne
   KRISTJANSDOTTIR, Greta B.
   DUNHILL, Gita
   ANDREWS, John T.
   HARDARDOTTIR, Jorunn
AS 1:1;2:2;3:2;4:2;5:2;6:3;
FF 1:;2:;3:;4:;5:;6:;
C1 Oregon State Univ, Coll Ocean & Atmospher Sci, Corvallis, OR 97331 USA.
   Univ Colorado, Inst Arctic & Alpine Res, Boulder, CO 80309 USA.
   Natl Energy Author, IS-108 Reykjavik, Iceland.
C2 UNIV OREGON STATE, USA
   UNIV COLORADO, USA
   NATL ENERGY AUTHOR, ICELAND
IF 3.391
TC 75
UR https://archimer.ifremer.fr/doc/00233/34436/32934.pdf
LA English
DT Article
CR IMAGES V LEG 1-MD114
   IMAGES V LEG 4-MD114
BO Marion Dufresne
DE ;Holocene;paleomagnetic secular variation;radiocarbon dating
AB We report the intercalibration of paleomagnetic secular variation (PSV) and radiocarbon dates of two expanded postglacial sediment cores from geographically proximal, but oceanographically and sedimentologically contrasting settings. The objective is to improve relative correlation and chronology over what can be achieved with either method alone. Core MD99-2269 was taken from the Hunafloaall Trough on the north Iceland shelf. Core MD99-2322 was collected from the Kangerlussuaq Trough on the east Greenland margin. Both cores are well dated, with 27 and 20 accelerator mass spectrometry (14)C dates for cores 2269 and 2322, respectively. Paleomagnetic measurements made on u channel samples document a strong, stable, single-component magnetization. The temporal similarities of paleomagnetic inclination and declination records are shown using each core's independent calibrated radiocarbon age model. Comparison of the PSV records reveals that the relative correlation between the two cores could be further improved. Starting in the depth domain, tie points initially based on calibrated (14)C dates are either adjusted or added to maximize PSV correlations. Radiocarbon dates from both cores are then combined on a common depth scale resulting from the PSV correlation. Support for the correlation comes from the consistent interweaving of dates, correct alignment of the Saksunarvatn tephra, and the improved correlation of paleoceanographic proxy data ( percent carbonate). These results demonstrate that PSV correlation used in conjunction with (14)C dates can improve relative correlation and also regional chronologies by allowing dates from various stratigraphic sequences to be combined into a single, higher dating density, age-to-depth model.
PY 2007
PD FEB
SO Paleoceanography
SN 0883-8305
PU Amer Geophysical Union
VL 22
IS 1/PA1209
UT 000244478800001
BP 1
EP 23
DI 10.1029/2006PA001285
ID 34436
ER

EF