Auxiliary material for Paper 2006PA001294

Temporal stability of the neodymium isotope signature of the Holocene to 
glacial North Atlantic


Tina van de Flierdt
Lamont-Doherty Earth Observatory and Department of Earth and Environmental 
Sciences, Columbia University, Palisades, New York, USA


Laura F. Robinson
Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic 
Institution, Woods Hole, Massachusetts, USA


Jess F. Adkins
Division of Geological and Planetary Sciences, California Institute of Technology,
Pasadena, California, USA


Sidney R. Hemming and and Steven L. Goldstein
Lamont-Doherty Earth Observatory and Department of Earth and Environmental 
Sciences, Columbia University, Palisades, New York, USA


Introduction

This paper contains new Nd isotope data for 10 U-series dated deep-sea corals 
from the New England Seamounts in the northwest Atlantic. Uranium-series data are
reported in 2006pa001294-ts01.txt, Nd isotope data are reported in 
2006pa001294-ts02.text,and literature data to calculate a hypothetical epsilon 
Nd of NADW north of 50°N by water mass mixing only are reported in 
2006pa001294-ts03.txt. All U-series data have been collected at Caltech in 2004/2005 and all Nd data
have been collected at the Lamont-Doherty Earth Observatory in 2005.



1. 2006pa001294-ts01.txt 

Table S1 presents the underlying data to calculate the U-series ages of the corals
presented in Figures 2 and 3. Sample IDs, location, water depth, U and Th 
concentrations, calculated delta 234U ratios, 230Th/238U activity ratios, and 
ages are reported.
	
	1.1. column "lab ID", Caltech lab identification number for each sample
	1.2. column "database ID", sample identification number
	1.3. column "seamount", name of the seamount of sample recovery
	1.4. column "water depth", meter, water depth of sample recovery
	1.5. column "238U", ppm, concentration of 238U; error reported is the 
	     2 sigma standard error
	1.6. column "230Th", ppt, concentration of 230Th; error reported is the 
	     2 sigma standard error
	1.7. column "232Th", ppb, concentration of 232Th; error reported is the 
	     2 sigma standard error
	1.8. column "delta234U, raw",o/oo, deviation of the measured
	     234U/238U ratio from the secular equilibrium value in parts per 
	     1000; error reported is the 2 sigma standard error
	1.9. column "230Th/238Uact", activity ratio of 230Th/238U; error 
	     reported is the 2 sigma standard error
	2.0. column "Age raw", years,calculated from measured 230Th/238U and 
	     234U/238U activity ratios; error reported is the 2 sigma standard 
	     error
	2.1. column "Age corr", years, age corrected for initial 230Th using 
	     the measured 232Th and an initial 232Th/230Th atom ratio of 
	     12,000 ± 12,000; error reported is the 2 sigma standard error
	2.2. column "initial delta 234U, corr, o/oo, deviation of the measured
	     234U/238U ratio from the secular equilibrium value in parts per 
	     1000 calculated using corrected age; error reported is the 2 sigma 
	     standard error. 


2. 2006pa001294-ts02.txt 
Table S2 presents the underlying Nd isotope data for the corals presented in 
Figures 2 and 3. Sample IDs, location, water depth, age, and Nd isotopic 
compositions are reported.

	1.1. column "lab ID", Caltech lab identification number for each sample
	1.2. column "database ID", sample identification number
	1.3. column "seamount", name of the seamount of sample recovery
	1.4. column "water depth", meter, water depth of sample recovery
	1.5. column "age", years, see description for Table S1, column 2.1. 
	1.6. column " 143Nd/144Nd ± 2sigma S.E.", results for 143Nd/144Nd ratios
	     obtained from each sample normalized to a La Jolla value of 0.511858; 
	     errors are given as two sigma standard errors
	1.7. column "epsilon Nd ± 2sigma S.D.", epsilon Nd values for all samples 
	     were calculated with a 143Nd/144NdCHUR of 0.512638; errors are 
	     reported as two sigma standard errors


3. 2006pa001294-ts03.txt
Table S3 presents the underlying published data to calculate a hypothetical Nd 
isotopic composition of NADW, mentioned in the main text.

	1.1. column "major water mass", name of water mass after Schmitz [1996]
	1.2. column "components", different components (e.g., water masses) 
	     contributing to the major water masses listed in column 1.1.
	1.3. column "flow", Sverdrup, water mass flow
	1.4. column "epsilon Nd", epsilon Nd values from the literature for
	     certain water masses with their two sigma standard errors
	1.5. column [Nd], 10^-12 g/g, Nd concentration