Auxiliary Material for Paper 2011GL048367

Glacial influence on the geochemistry of riverine iron fluxes to the Gulf of 
Alaska and effects of deglaciation

Andrew W. Schroth 
Woods Hole Coastal and Marine Science Center,  U.S. Geological Survey,
Woods Hole, Massachusetts, USA

John Crusius 
Woods Hole Coastal and Marine Science Center,  U.S. Geological Survey,
Woods Hole, Massachusetts, USA

Coastal and Marine Geology Program, U.S. Geological Survey, 
School of Oceanography, University of Washington, 
Seattle, Washington, USA

Fanny Chever 
European Institute for Marine Studies, University of Brest, 
Technopole Brest-Iroise, 
Plouzane, France

Benjamin C. Bostick 
Lamont-Doherty Earth Observatory, 
Palisades, New York, USA

Olivier J. Rouxel
European Institute for Marine Studies, University of Brest, 
Technopole Brest-Iroise, 
Plouzane, France

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

Centre de Brest, IFREMER, 
Plouzane, France


Schroth, A. W., J. Crusius, F. Chever, B. C. Bostick, and O. J. Rouxel (2011), 
Glacial influence on the geochemistry of riverine iron fluxes to the Gulf of 
Alaska and effects of deglaciation, Geophys. Res. Lett., 38, L16605, 
doi:10.1029/2011GL048367.

Introduction 

This auxiliary material contains a full description of the methods used in 
Schroth et al. [2011] with appropriate references.

1. 2011gl048367-txts01.doc
Text S1. Full description of the methods with Figures S1 and S2 and Table S1.

Figure S1 contains X-ray diffraction data for the <1 micron size fraction of 
Copper River Delta sediment.

Figure S2 contains example XANES spectra of suspended sediment from a boreal-
forested 'blackwater' tributary as well as XANES spectra of suspended sediment 
collected from a glacierized river. 

Table S1 contains location, tributary type, and pH data for all sampling 
stations sampled in August of 2008.