| Oceanography > Issues > Archive > Volume 4 > Issue 1 |
1991, Oceanography 4(1):27–32, http://dx.doi.org/10.5670/oceanog.1991.18
Biogeochemical Processes in Amazon Shelf Sediments
Authors | First Paragraph | Full Article | Citation
Authors
Robert C. Aller | Marine Sciences Research Center, State University of New York, Stony Brook, NY, USA
Josephine Y. Aller | Marine Sciences Research Center, State University of New York, Stony Brook, NY, USA
Neal E. Blair | Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC, USA
James E. Mackin | Marine Sciences Research Center, State University of New York, Stony Brook, NY, USA
Peter D. Rude | Marine Sciences Research Center, State University of New York, Stony Brook, NY, USA
Ian Stupakoff | Marine Sciences Research Center, State University of New York, Stony Brook, NY, USA
Sambasiva Patchineelam | Departamento de Geoquimica, Universidade Federal Fluminense, Niteroi, RJ, Brasil
Susan E. Boehme | Marine, Earth, and Atmospheric Sciences, North Carolina State University, Raleigh, NC, USA
Bastiaan Knoppers | Departamento de Geoquimica, Universidade Federal Fluminense, Niteroi, RJ, Brasil
First Paragraph
Each year the Amazon River delivers approximately 1 billion metric tons of sediment to the equatorial Atlantic (Meade et al., 1985). A portion of this debris is highly weathered and contains abundant reactive Fe, Mn, AI, and Si oxides. The associated terrestrial organic matter is biologically refractory (Hedges et al., 1986). Upon entering the Amazon Shelf region, particles are exposed to seawater brine, mixed with labile planktonic organic matter, and incorporated into the seabed where a variety of geochemical reactions take place. Major research efforts within the AmasSeds Project include elucidating the types and rates of these diagenetic reactions (particularly those associated with the decomposition of organic matter), their governing factors, and their influence on the properties of overlying water and preserved deposits.
Full Article
Citation
Aller, R.C., J.Y. Aller, N.E. Blair, J.E. Mackin, P.D. Rude, I. Stupakoff, S. Patchineelam, S.E. Boehme, and B. Knoppers. 1991. Biogeochemical processes in Amazon shelf sediments. Oceanography 4(1):27–32, http://dx.doi.org/10.5670/oceanog.1991.18.