Auxiliary material for Paper 2008PA001693 

Comparing glacial and Holocene opal fluxes in the Pacific sector of the Southern 
Ocean 

Louisa I. Bradtmiller
Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York, USA 

Also at Department of Earth and Environmental Sciences, Columbia 
University, New York, New York, USA 

Now at Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, 
Woods Hole, Massachusetts, USA

Robert F. Anderson
Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York, USA

Also at Department of Earth and Environmental Sciences, Columbia 
University, New York, New York, USA

Martin Q. Fleisher
Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York, USA

Lloyd H. Burckle
Lamont-Doherty Earth Observatory of Columbia University, Palisades, New York, USA


Bradtmiller, L. I., R. F. Anderson, M. Q. Fleisher, and L. H. Burckle (2009), 
Comparing glacial and Holocene opal fluxes in the Pacific sector of the Southern 
Ocean, Paleoceanography, 24, PA2214, doi:10.1029/2008PA001693. 
 
Introduction 
 
The appendix seeks to describe in greater detail the methods used to select 
cores for study, to create chronologies for those cores, and to reject cores 
later found to be outside the time period of interest.  To that end, we include 
one text file including further description of the techniques used, and two 
figures (.jpg files).  The text file includes the references for the auxiliary 
material.  These data were collected at the same time as the data presented in 
the main manuscript. 
 
1. 2008pa001693-txts01.txt	
The text file describes the methods used to select cores for study, and methods 
used to create core chronologies.   
 
2. 2008pa001693-fs01.jpg	
Magnetic susceptibility, % opal and % E. antarctica data for core E11-11. 
 
3. 2008pa001693-fs02.jpg	
Opal and detrital fluxes, and 231Pa/230Th ratios (X 10) for 
core E11-11, assuming that the core top is Holocene in age and that the underlying 
glacial sediments were deposited during the LGM.  Fluxes of opal and of lithogenic 
material derived using this age model were much greater than for surrounding cores, 
whereas the initial unsupported 231Pa/230Th ratios were much lower (see text).  These 
anomalous results were interpreted to indicate that sediments from the last glacial 
cycle were missing in this core, and that the core top sediments were most likely 
deposited during Marine Isotope Stage 5.