The oceanic chemistry of the rare-earth elements

The Royal Society - Tập 325 Số 1583 - Trang 105-126 - 1988
Henry Elderfield1
1Department of Earth Sciens, University of Cambridge, Madingley Road, Cambridge CB3 0EZ, U. K.

Tóm tắt

Because of the unique chemical characteristics of the rare-earth elements (rees), they provide information as oceanic tracers of element source and reactivity. The absolute and relative concentrations of the rees in ocean waters reflect their input from rivers, by aeolian transport and from hydrothermal vents; their interaction with the biogeochemical cycle involving removal from surface waters by adsorption and oxidation at particle surfaces (probably with organic coatings) and deeper regeneration; and the effects of advective transport. Within the ree group, Ce anomalies occur in response to oceanic redox conditions; Eu anomalies in response to aeolian and hydrothermal input; and Nd isotopic variations reflect element sources. Both ree concentration patterns and Nd isotopic variations allow the effects of the vertical particle flux and of lateral advection to be separated.

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Tài liệu tham khảo

10.1016/0198-0149(81)90085-6

10.1038/296203a0

Cantrell K. J., 1987, Rare earth element complexation by carbonate and oxalate ions. Geochim. cosmochim, Acta, 51, 597

Crookes W., 1887, Genesis of the elements, Chem. News. Lond., 55, 83

10.1038/301324a0

De Baar H. J. W., 1985, a Rare earth elements in the Atlantic and Pacific Oceans. Geochim. cosmochim, Acta, 49, 1943

De Baar H. J. W., 1985, Anomalies in rare earth distributions in Seawater: Gd and Tb. Geochim. cosmochim, Acta, 49, 1961

De Baar H. J. W., 1985, c Rare earth elements at VERTEX IV in the Central North Pacific glyre, Un., 66, 1291

De Baar H. J. W. German C. R. Elderfield H. & Van Gaans P. 1988 Rare earth element distributions in anoxic waters of the Cariaco Trench. Geochim. cosmochim. Acta. (In the press.)

Elderfield H., 1981, Negative cerium anomalies in the rare earth element patterns of oceanic ferromanganese nodules. Earth planet. Sci, Lett., 55, 163

10.1038/296214a0

Elderfield H. & Greaves M. J. 1983 Determination of the rare earth elements in seawater. In Trace metals in seawater (ed. C. S. Wong E. Boyle K. W. Bruland J. D. Burton & E. D. Goldberg) pp. 427-445. New York & London: Plenum Press.

Elderfield H., 1987, Rare earth elements in the pore waters of reducing nearshore sediments. Earth planet. Sci, Lett., 82, 280

Elderfield H. Greaves M. J. Klinkhammer G. P. & Edmond J. M. 1987 Rare earth elements in hydrothermal fluids and plumes: influence on geochemical mass balance. Abstract IUGG Symposium Vancouver 1987.

10.1086/626161

Goldberg E. D., 1963, Rare-earth distribution in the marine environment. J. geophys, Res., 68, 4209

Goldschmidt V. M. 1954 Geochemistry (730 pages.) Oxford: Clarendon Press.

Greaves M. Klinkhammer G. Elderfield H. Lambert C. & Risler N. 1985 Rare earth geochemistry in the Alboran Sea. Terra cogn. 5 190.

Heezen B. C. Menzies R. J. Broecker W. S. & Ewing M. 1959 Stagnation of the Cariaco Trench. In Preprints International Oceanographic Congress (ed. M. Sears) pp. 99-102. Washington D.C.: Am Assoc. Adv. Science.

10.1038/305185a0

Krauskopf K. B., 1956, Factors controlling the concentration of thirteen rare metals in sea water. Geochim. cosmochim, Acta, 9, 1

10.1038/303795a0

Palmer M. 1983 Rare earth elements and Nd and Sr isotopes in the Atlantic Ocean. Ph.D. thesis University of Leeds. (284 pages.)

Piepgras D. J., 1980, Neodymium isotopic variations in sea water. Earth planet. Sci, Lett., 50, 128

10.1126/science.217.4556.207

Piepgras D. J., 1983, Influence of the Mediterranean outflow on the isotopic composition of neodymium in waters of the North Atlantic. J. geophys, Res., 88, 5997

Piepgras D. J., 1985, Strontium and neodymium isotopes in hot springs on the East Pacific Rise and Guaymas Basin. Earth planet. Sci, Lett., 72, 341

Piepgras D. J., 1987, Rare Earth element transport in the western North Atlantic inferred from Nd isotopic observations. Geochim. cosmochim, Acta, 51, 1257

Piepgras D. J., 1979, The isotopic composition of Nd in different ocean masses. Earth planet. Sci, Lett., 45, 223

Schindler P. W., 1975, Removal of trace metals from the oceans: a zero order model, Thalassiajugosl., 11, 101

10.1016/0198-0149(87)90047-1

Stordal M. C., 1986, Neodymium isotopic study of Baffin Bay water: Sources of REE from very old terranes. Earth planet. Sci, Lett., 77, 259

Turekian K. K., 1977, The fate of metals in the oceans. Geochim. cosmochim, Acta, 41, 1139

Upstill-Goddard R. Elderfield H. & Sholkovitz E. R. 1987 Rare earth elements in rivers and estuaries. (In preparation.)

Whitfield M. & Turner D. R. 1987 The role of particles in regulating the composition of sea water. In Aquatic surface chemistry (ed. W. Stumm) pp. 457-493. New York: Wiley.

Turner D. R., 1981, The equilibrium speciation of dissolved components in fresh water and sea water at 25 °C and 1 atm pressure. Geochim. cosmochim, Acta, 45, 855

Boyle E. A., 1985, Trace metal enrichments in the Mediterranean Sea. Earth planet. Sci, Lett., 74, 405

Hoyle J., 1984, The behaviour of the rare earth elements during mixing of river and sea waters. Geochim. cosmochim, Acta, 48, 143