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Phosphorus Accumulation Associated with Intense Diagenetic Metal-Oxide Cycling in Sediments along the Eastern Continental Margin of India


Affiliations
1 Geological Oceanography Division, CSIR National Institute of Oceanography, Dona Paula, Goa 403 004, India
 

Sequential phosphorus extractions were carried out to understand phosphorus cycling and enrichment in surface sediments along the eastern continental margin of India. Phosphorus associated with authigenic (Paut) and biogenic (Pbio) phases is high by a factor of 2-10 in the continental shelf sediments compared to slope and deep-sea sediments. Phosphorus associated with Fe oxides (PFe) is enriched by a factor of 2-5 in the continental slope and rise sediments (500-3000 m water depth) compared to shelf sediments. Fe-Mn oxy(hydroxides) formed during early diagenesis adsorb phosphate from the water column or pore waters, thereby enriching the PFe fraction in the continental slope sediments. These results are in contrast with those from the Arabian Sea, where wide and intense mid-depth oxygen minimum zone (150-1200 m water depth) releases PFe to pore waters and enhances Paut accumulation in the continental slope sediments.

Keywords

Early Diagenesis, Metal-Oxide Cycling, Phosphorus Accumulation, Surface Sediments.
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  • Ruttenberg, K. C., The global phosphorus cycle. In Treatise on Geochemistry, Volume 8 (eds Holland, H. D. and Turekian, K. K.), (Biogeochemistry: Schlesinger, W. H., volume editor), Elsevier Science, 2004, pp. 585–643.

  • Delaney, M. L., Phosphorus accumulation in marine sediments and the oceanic phosphorus cycle. Global Biogeochem. Cycles, 1998, 12, 563–572.

  • Benitez-Nelson, C. R., The biogeochemical cycling of phosphorus in marine systems. Earth Sci. Rev., 2000, 51, 109–135.

  • Froelich, P. N., Kinetic control of dissolved phosphate in natural rivers and estuaries: a primer on the phosphate buffer mechanism. Limnol. Oceanogr., 1988, 33, 649–668.

  • Froelich, P. N. et al., Early diagenesis of organic matter in Peru continental margin sediments: phosphorite precipitation. Mar. Geol., 1988, 80, 309–343.

  • Filippelli, G. M. and Delaney, M. L., Phosphorus geochemistry of equatorial Pacific sediments. Geochim. Cosmochim. Acta, 1996, 60, 1479–1495.

  • Slomp, C. P., Epping, E. H. G., Helder, W. and van Raaphorst, W., A key role for iron-bound phosphorus in authigenic apatite formation in North Atlantic continental platform sediment. J. Mar. Res., 1996, 54, 1179–1205.

  • Prakash Babu, C. and Nagender Nath, B., Processes controlling forms of phosphorus in surficial sediments from the eastern Arabian Sea impinged by varying bottom water oxygenation conditions. Deep-Sea Res. II, 2005, 52, 1965–1980.

  • Schenau, S. J., Reichart, G. J. and De Lange, G. J., Phosphorus burial as a function of paleoproductivity and redox conditions in Arabian Sea sediments. Geochim. Cosmochim. Acta, 2005, 69, 919–931.

  • Suess, E., Phosphate regeneration from sediments of the Peru continental margin by dissolution of fish debris. Geochim. Cosmochim. Acta, 1981, 45, 577–588.

  • Ruttenberg, K. C. and Berner, R. A., Authigenic apatite formation and burial in sediments from non-upwelling continental margin environments. Geochim. Cosmochim. Acta, 1993, 57, 991–1007.

  • Sundby, B., Gobeil, C., Silverberg, N. and Mucci, A., The phosphorus cycle in coastal marine sediments. Limnol. Oceanogr., 1992, 37, 1129–1145.

  • Slomp, C. P., Malschaert, J. F. P. and van Raaphorst, W., The role of sorption in sediment-water exchange of phosphate in North Sea continental margin sediments. Limnol. Oceanogr., 1998, 43, 832–846.

  • Schenau, S. J., Slomp, C. P. and De Lange, G. J., Phosphogenesis and active phosphorite formation in sediments from the Arabian Sea oxygen minimum zone. Mar. Geol., 2000, 169, 1–20.

  • Chauhan, O. S., Gujar, A. R. and Rao, Ch. M., On the occurrence of ferromanganese micronodules from the sediments of the Bengal Fan: a high terrigenous site. Earth Planet. Sci. Lett., 1994, 128, 563–573.

  • Chauhan, O. S. and Rao, Ch. M., Influence of sedimentation on enrichment of manganese and growth of ferromanganese micronodules, Bengal Fan, India. Mar. Geol., 1999, 161, 39–47.

  • Chauhan, O. S., Geochemistry of ferromanganese micronodules and associated Mn and trace metals diagenesis at high terrigenous depositional site of middle fan region, Bay of Bengal. Deep-Sea Res. II, 2003, 50, 961–978.

  • Prasanna Kumar, S. et al., Why is the Bay of Bengal less productive during summer monsoon compared to the Arabian Sea? Geophys. Res. Lett., 2002, 29(24), 88.1–88.4.

  • Ramaswamy, V. and Gaye, B., Regional variations in the fluxes of foraminifera carbonate, coccolithophorid carbonate and biogenic opal in the northern Indian Ocean. Deep-Sea Res. I, 2006, 53, 271–293.

  • Vaz, G. G., Phosphatic nodules in the outer continental shelf off Madras, Bay of Bengal. Indian J. Mar. Sci., 1995, 24, 8–12.

  • Rao, V. P., Rao, K. M., Vora, K. H., Almeida, F., Subramaniam, M. M. and Souza, C. G. A., A potential phosphorite deposit on the continental margin off Chennai. Curr. Sci., 1998, 74, 574–577.

  • Anschutz, P., Zhong, S., Sundby, B., Mucci, A. and Gobeil, C., Burial efficiency of phosphorus and the geochemistry of iron in continental margin sediments. Limnol. Oceanogr., 1998, 43, 53–64.

  • Schenau, S. J. and De Lange, G. J., A novel chemical method to quantify fish debris in marine sediments. Limnol. Oceanogr., 2000, 45, 963–971.

  • Tunnicliffe, V., O’Connell, J. M. and McQuoid, M. R., A Holocene record of marine fish remains from the Northeastern Pacific. Mar. Geol., 2001, 174, 197–210.

  • Diaz-Ochoa, J. A., Lange, C. B., Pantoja, S., De Lange, G. J., Gutierrez, D., Munoz, P. and Salamanca, M., Fish scales in sediments from off Callao, central Peru. Deep-Sea Res. II, 2009, 56, 1124–1135.

  • Bhosle, N. B. and Dhople, V. M., Distribution of some biochemical compounds in the sediments of the Bay of Bengal. Chem. Geol., 1988, 67, 341–352.

  • Ittekot, V., The abiotically driven biological pump in the ocean and short term fluctuations in the atmospheric CO2 contents. Global Planet. Change, 1993, 8, 17–25.

  • Subramanian, V., Sediment load of Indian rivers. Curr. Sci., 1993, 64, 928–930.

  • Ramaswamy, V. and Nair, R. R., Fluxes of material in the Arabian Sea and Bay of Bengal-sediment trap studies. Proc. Indian Acad. Sci. (Earth Planet. Sci.), 1994, 103, 189–210.

  • Unger, D., Ittekot, V., Schäfer, P. and Tiemann, J., Biogeochemistry of particulate organic matter from the Bay of Bengal as discernible from hydrolysable neutral carbohydrates and amino acids. Mar. Chem., 2005, 96, 155–184.

  • Pattan, J. N., Parthiban, G., Prakash Babu, C., Khadge, N. H., Paropkari, A. L. and Kodagali, V. N., A note on geochemistry of surface sediments from Krishna–Godavari basin, east coast of India. J. Geol. Soc. India, 2008, 71, 107–114.

  • Mazumdar, A. et al., Pore-water sulfate concentration profiles of sediment cores from Krishna–Godavari and Goa basins, India. Geochem. J., 2007, 41, 259–269.

  • Chakraborty, P., Chakraborty, S., Jayachandran, S., Madan, R., Sarkar, A., Linsy, P. and Nagender Nath, B., Effects of bottom water dissolved oxygen variability on copper and lead fractionation in the sediments across the oxygen minimum zone, western continental margin of India. Sci. Total Environ., 2016, 556, 1052–1061.

  • Krom, M. D. and Bemer, R. A., The diagenesis of phosphorus in a nearshore marine sediment. Geochim. Cosmochim. Acta, 1981, 45, 207–216.

  • Filippelli, G. M., Carbon and phosphorus cycling in anoxic sediments of the Saanich Inlet, British Columbia. Mar. Geol., 2001, 174, 307–321.

  • Van der Zee, C., Slomp, C. P. and van Raaphorst, W., Authigenic P formation and reactive P burial in sediments of the Nazare canyon on the Iberian margin (NE Atlantic). Mar. Geol., 2002, 185, 379–392.

  • Berner, R. A., Phosphate removal from sea water by adsorption on volcanogenic ferric oxides. Earth Planet. Sci. Lett., 1973, 18, 77–86.

  • Naqvi, S. W. A., Oxygen deficiency in the Northern Indian Ocean. Workshop on Oxygen Minimum Systems in the Ocean: Distribution, Diversity and Dynamics, Concepcion, Chile, 24–26 October 2006. Supplimento Gayana, 2006, 70, 53–58.


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  • Phosphorus Accumulation Associated with Intense Diagenetic Metal-Oxide Cycling in Sediments along the Eastern Continental Margin of India

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Authors

C. Prakash Babu
Geological Oceanography Division, CSIR National Institute of Oceanography, Dona Paula, Goa 403 004, India
V. Ramaswamy
Geological Oceanography Division, CSIR National Institute of Oceanography, Dona Paula, Goa 403 004, India

Abstract


Sequential phosphorus extractions were carried out to understand phosphorus cycling and enrichment in surface sediments along the eastern continental margin of India. Phosphorus associated with authigenic (Paut) and biogenic (Pbio) phases is high by a factor of 2-10 in the continental shelf sediments compared to slope and deep-sea sediments. Phosphorus associated with Fe oxides (PFe) is enriched by a factor of 2-5 in the continental slope and rise sediments (500-3000 m water depth) compared to shelf sediments. Fe-Mn oxy(hydroxides) formed during early diagenesis adsorb phosphate from the water column or pore waters, thereby enriching the PFe fraction in the continental slope sediments. These results are in contrast with those from the Arabian Sea, where wide and intense mid-depth oxygen minimum zone (150-1200 m water depth) releases PFe to pore waters and enhances Paut accumulation in the continental slope sediments.

Keywords


Early Diagenesis, Metal-Oxide Cycling, Phosphorus Accumulation, Surface Sediments.

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DOI: https://doi.org/10.18520/cs%2Fv113%2Fi03%2F473-478