FN Archimer Export Format
PT J
TI Termination 1 timing in radiocarbon-dated regional benthic delta O-18 stacks
BT 
AF STERN, Joseph V.
   LISIECKI, Lorraine E.
AS 1:1;2:1;
FF 1:;2:;
C1 Univ Calif Santa Barbara, Dept Earth Sci, Santa Barbara, CA 93106 USA.
C2 UNIV CALIF SANTA BARBARA, USA
IF 3.738
TC 52
UR https://archimer.ifremer.fr/doc/00289/40039/38763.pdf
   https://archimer.ifremer.fr/doc/00289/40039/38764.docx
   https://archimer.ifremer.fr/doc/00289/40039/38765.xlsx
   https://archimer.ifremer.fr/doc/00289/40039/38766.xlsx
   https://archimer.ifremer.fr/doc/00289/40039/38767.docx
   https://archimer.ifremer.fr/doc/00289/40039/38768.xlsx
   https://archimer.ifremer.fr/doc/00289/40039/38769.pdf
   https://archimer.ifremer.fr/doc/00289/40039/38770.pdf
   https://archimer.ifremer.fr/doc/00289/40039/38771.pdf
LA English
DT Article
CR IMAGES 1-MD101
   IMAGES 3-IPHIS-MD106
   IMAGES V LEG 1-MD114
   IMAGES V LEG 4-MD114
   MD 122 / WEPAMA
   MD 126 / MONA
   VT 90 / SOUC
BO Marion Dufresne
DE ;Termination 1;regional stacks;benthic delta O-18;radiocarbon
AB Benthic O-18 changes are often assumed to be globally synchronous, but studies comparing 2-9 radiocarbon-dated records over the most recent deglaciation (Termination 1) have proposed differences in the timing of benthic O-18 change between the Atlantic and Pacific, intermediate and deep, and North and South Atlantic. Because of the relatively small number of records used in these previous studies, it has remained unclear whether these differences are local or regional in scale. Here we present seven regional benthic O-18 stacks for 0-40 kyr B.P. that include 252 records with independent regional age models constrained by 852 planktonic foraminiferal C-14 dates from 61 of these cores. We find a 4000 year difference between the earliest termination onset in the intermediate South Atlantic at 18.5 (95% confidence interval: 17.9-19.0) kyr B.P. and the latest in the deep Indian at 14.5 (14.1-15.0) kyr B.P. The termination onset occurs at 17.5 kyr B.P. in the intermediate and deep North Atlantic, deep South Atlantic, and deep Pacific. However, throughout the termination deep North Atlantic benthic O-18 leads the deep Pacific by an average of 1000year and a maximum of 1700year. Additionally, the intermediate Pacific termination onset at 16.5 (16.1-16.9) kyr B.P. demonstrates that intermediate-depth benthic O-18 change was not globally synchronous. These regional stacks provide better age models than a global stack across Termination 1 and potentially important constraints on deglacial ocean circulation changes.
PY 2014
PD DEC
SO Paleoceanography
SN 0883-8305
PU Amer Geophysical Union
VL 29
IS 12
UT 000348536600002
BP 1127
EP 1142
DI 10.1002/2014PA002700
ID 40039
ER

EF