FN Archimer Export Format
PT J
TI A Pliocene-Pleistocene stack of 57 globally distributed benthic delta O-18 records
BT 
AF LISIECKI, LE
   RAYMO, ME
AS 1:1;2:2;
FF 1:;2:;
C1 Brown Univ, Dept Geol Sci, Providence, RI 02912 USA.
   Boston Univ, Dept Earth Sci, Boston, MA 02215 USA.
C2 UNIV BROWN, USA
   UNIV BOSTON, USA
IF 3.233
TC 2494
UR https://archimer.ifremer.fr/doc/00233/34403/32830.pdf
LA English
DT Article
CR MD 122 / WEPAMA
BO Marion Dufresne
DE ;benthic δ18O;Pliocene-Pleistocene;age model
AB We present a 5.3- Myr stack ( the " LR04'' stack) of benthic delta(18)O records from 57 globally distributed sites aligned by an automated graphic correlation algorithm. This is the first benthic delta(18)O stack composed of more than three records to extend beyond 850 ka, and we use its improved signal quality to identify 24 new marine isotope stages in the early Pliocene. We also present a new LR04 age model for the Pliocene- Pleistocene derived from tuning the delta(18)O stack to a simple ice model based on 21 June insolation at 65degreesN. Stacked sedimentation rates provide additional age model constraints to prevent overtuning. Despite a conservative tuning strategy, the LR04 benthic stack exhibits significant coherency with insolation in the obliquity band throughout the entire 5.3 Myr and in the precession band for more than half of the record. The LR04 stack contains significantly more variance in benthic delta(18) O than previously published stacks of the late Pleistocene as the result of higher-resolution records, a better alignment technique, and a greater percentage of records from the Atlantic. Finally, the relative phases of the stack's 41- and 23- kyr components suggest that the precession component of delta(18)O from 2.7 - 1.6 Ma is primarily a deep- water temperature signal and that the phase of delta(18)O precession response changed suddenly at 1.6 Ma.
PY 2005
PD MAR
SO Paleoceanography
SN 0883-8305
PU Amer Geophysical Union
VL 20
IS 1/PA1003
UT 000226581600001
BP 1
EP 17
DI 10.1029/2004PA001071
ID 34403
ER

EF