Assessing the effect of dissolution on planktonic foraminiferal Mg/Ca ratios: Evidence from Caribbean core tops

Geochemistry, Geophysics, Geosystems

Volumn 7, Issue 7, 2006, Pages

  Regenberg, Marcus ^a   Nürnberg, Dirk ^a   Steph, Silke ^a,b   Groeneveld, Jeroen ^a,c   Garbe Schönberg, Dieter ^d   Tiedemann, Ralf ^a,b   Dullo, Wolf Christian ^a  

^a GEOMAR HELMHOLTZ CENTRE FOR OCEAN RESEARCH KIEL   (Germany)

^b ALFRED WEGENER INSTITUTE FOR POLAR AND MARINE RESEARCH   (Germany)

^c UNIVERSITY OF BREMEN   (Germany)

^d UNIVERSITY OF KIEL   (Germany)

Author keywords

Carbonate ion concentration; Dissolution effect; Mg Ca paleothermometry; Planktonic foraminifera

Indexed keywords

EID: 47749102581     PISSN: 15252027     EISSN: 15252027     Source Type: Journal    
DOI: 10.1029/2005GC001019     Document Type: Article

References (120)

1. Anand, P., and H. Elderfield (2005), Variability of Mg/Ca and Sr/Ca between and within the planktonic foraminifers Globigerina bulloides and Globorotalia truncatulinoides, Geochem. Geophys. Geosyst., 6, Q11D15, Doi:10.1029/ 2004GC000811.
2. Anand, P., H. Elderfield, and M. H. Conte (2003), Calibration of Mg/Ca thermometry in planktonic foraminifera from a sediment trap time series, Paleoceanography, 18(2), 1050, Doi:10.1029/2002PA000846.
3. Anderson, D. M., and D. Archer (2002), Glacial-interglacial stability of ocean pH inferred from foraminifer dissolution rates, Nature, 416, 70-73.
4. 2, Science, 297, 833-836.
5. Barker, S., M. Greaves, and H. Elderfield (2003), A study of cleaning procedures used for foraminiferal Mg/Ca paleother-mometry, Geochem. Geophys. Geosyst., 4(9), 8407, Doi:10.1029/2003GC000559.
6. Bé, A. W. H. (1977), An ecological, zoogeographic and taxonomic review of recent planktonic foraminifera, in Oceanic Micropaleontology, vol.1, edited by A. T. S. Ramsay, pp. 1- 100, Elsevier, New York.
7. Bé, A. W. H. (1980), Gametogenic calcification in a spinose planktonic foraminifer Globigerinoides sacculifer (Brady), Mar. Micropaleontol., 5, 283-310.
8. Bé, A. W. H., and D. B. Ericson (1963), Aspects of calcification in planktonic foraminifera, Ann. N. Y. Acad. Sci., 109, 65-81.
9. Bé, A. W. H., and L. Lott (1964), Shell growth and structure of planktonic foraminifera, Science, 145, 823-824.
10. Bé, A. W. H., O. R. Anderson, W. W. J. Faber, and D. A. Caron (1983), Sequence of morphological and cytoplasmic changes during gametogenesis in the planktonic foraminifera Globigerinoides sacculifer (Brady), Micropaleontology, 29, 310-325.
11. Bender, M. L., R. B. Lorens, and F. D. Williams (1975), Sodium, magnesium and strontium in the tests of planktonic foraminifera, Micropaleontology, 21, 448-459.
12. Bentov, S., and J. Erez (2005), Novel oberservations on biomineralization processes in foraminifera and implications for Mg/Ca ratio in the shells, Geology, 33(11), 841-844, Doi:10.1130/G21800.1. (Pubitemid 41623122)
13. Bentov, S., and J. Erez (2006), Impact of biomineralization processes on the Mg content of foraminiferal shells: A biological perspective, Geochem. Geophys. Geosyst., 7, Q01P08, Doi:10.1029/2005GC001015.
14. Berger, W. H. (1968), Planktonic foraminifera: Selective solution and paleoclimate interpretation, Deep Sea Res. Oceanogr. Res., 15, 31-43.
15. Berger, W. H. (1970), Planktonic foraminifera: Selective solution and the lysocline, Mar. Geol., 8, 111-138.
16. Berger, W. H. (1971), Sedimentation of planktonic foraminifera, Mar. Geol., 11, 325-358.
17. Bijma, J., J. Erez, and C. Hemleben (1990), Lunar and semilunar reproductive cycles in some spinose planktonic foraminifers, J. Foraminiferal Res., 20(2), 117-127.
18. Bijma, J., C. Hemleben, and K. Wellnitz (1994), Population dynamics of the planktic foraminifer Globigerinoides sacculifer (Brady) from the central Red Sea, Deep Sea Res., Parti, 41(3), 485-510. (Pubitemid 2075967)
19. Broecker, W. S., and E. Clark (2002), Carbonate ion concentration in glacial-age deep waters of the Caribbean Sea, Geochem. Geophys. Geosyst., 3(3), 1021, Doi:10.1029/2001GC000231.
20. Brown, K., and K. Azmy (2005), Morphological and geochemical analysis of recent Caribbean Globorotaliid foraminifera, in Geophys. Res. Abstr., 7, sRef-ID:1607-7962/gra/ EGU05-A-05254.
21. Brown, S. J., and H. Elderfield (1996), Variations in Mg/Ca and Sr/Ca ratios of planktonic foraminifera caused by post-depositional dissolution: Evidence of shallow Mg-dependent dissolution, Paleoceanography, 11(5), 543-551.
22. Bulgakov, N. P., and O. D. Lomakin (1995), Local sound channels in the Caribbean Sea, Oceanology, 34(6), 744-749.
23. Chaisson, W. P., and A. C. Ravelo (1997), Changes in upper water-column structure at Site 925, Late Miocene-Pleistocene: Planktonic foraminifer assemblage and isotopic evidence, Proc. Ocean Drill. Program Sci. Results, 154, 255-268.
24. Corredor, J. E., and J. M. Morell (2001), Seasonal variation of physical and biogeochemical features in eastern Caribbean Surface Water, J. Geophys. Res., 106(C3), 4517-4525.
25. Cronblad, H. G., and B. A. Malmgren (1981), Climatically controlled variation of Sr and Mg in Quaternary planktic foraminifera, Nature, 291, 61-64.
26. 2 levels, Paleoceanography, 2(5), 489-517.
27. Curry, W. B., R. C. Thunell, and S. Honjo (1983), Seasonal changes in the isotopic composition of planktonic foramini- fera collected in Panama Basin sediment traps, Earth Planet. Sci. Lett., 64, 33-43.
28. de Villiers, S. (2003), Dissolution effects on foraminiferal Mg/Ca records of sea surface temperature in the western equatorial Pacific, Paleoceanography, 18(3), 1070, Doi:10.1029/2002PA000802.
29. Dekens, P. S., D. W. Lea, D. K. Pak, and H. J. Spero (2002), Core top calibration of Mg/Ca in tropical foraminifera: Refining paleotemperature estimation, Geochem. Geophys. Geosyst., 3(4), 1022, Doi:10.1029/2001GC000200.
30. Deuser, W. G. (1987), Seasonal variations in isotopic composition and deep-water fluxes of the tests of perennially abundant planktonic foraminifera of the Sargasso Sea: Results from sediment trap collections and their paleoceanographic significance, J. Foraminiferal Res., 17, 14-27.
31. Deuser, W. G., and E. H. Ross (1989), Seasonally abundant planktonic foraminifera of the Sargasso Sea: Succession, deep-water fluxes, isotopic compositions, and paleoceano-graphic implications, J. Foraminiferal Res., 19, 268-293.
32. Duckworth, D. L. (1977), Magnesium concentrations in the tests of the planktonic foraminifer Globorotalia truncatulinoides, J. Foraminiferal Res., 4, 304-312.
33. Duplessy, J. C., P. L. Blanc, and A. W. H. Bé (1981), Oxygen-18 enrichment of planktic foraminifera due to gametogenic calcification below the euphotic zone, Science, 213, 1247-1249.
34. Eggins, S., P. DeDeckker, and J. Marshall (2003), Mg/Ca variation in planktonic foraminifera tests: Implications for reconstructing palaeo-seawater temperature and habitat migration, Earth Planet. Sci. Lett., 212, 291-306.
35. 18O of surface ocean waters inferred from foraminiferal Mg/Ca ratios, Nature, 405, 442-445.
36. 18 of species of planktonic foraminifera, Geochem. Geophys. Geosyst., 3(8), 1052, Doi:10.1029/2001GC000194.
37. Erez, J., and S. Honjo (1981), Comparison of isotopic composition of planktonic foraminifera in plankton tows, sediment traps and sediments, Palaeogeogr. Palaeoclimatol. Palaeoecol., 33, 129-156.
38. Fairbanks, R. G., and P. H. Wiebe (1980), Foraminifera and chlorophyll maximum- Vertical distribution, seasonal succession and paleoceanographic significance, Science, 209, 1524-1526.
39. Fairbanks,R.G., P. H. Wiebe, and A.W.H.Bé (1980), Vertical distribution and isotopic composition of living planktonic foraminifera in the western North Atlantic, Science, 207, 61-63.
40. Fairbanks, R. G., M. Sverdlove, R. Free, P. H. Wiebe, and A. W. H. Bé (1982), Vertical distribution and isotopic fractionation of living planktonic foraminifera from the Panama Basin, Nature, 298, 841-844.
41. Feely, R. A., et al. (2002), In situ calcium carbonate dissolution in the Pacific Ocean, Global Biogeochem. Cycles, 16(4), 1144, Doi:10.1029/ 2002GB001866.
42. 3 system in the oceans, Science, 305, 362-366.
43. Flower, B. P., D. W. Hastings, H. W. Hill, and T. M. Quinn (2004), Phasing of deglacial warming and Laurentide Ice Sheet meltwater in the Gulf of Mexico, Geology, 32(7), 597-600.
44. Fratantoni, D. M., R. J. Zantopp, W. E. Johns, and J. L. Miller (1997), Updated bathymetry of the Anageda-Jungfern Pas- sage complex and implications for Atlantic inflow to the abyssal Caribbean Sea, J. Mar. Res., 55, 847-860.
45. Ganssen, G., and D. Kroon (2000), The isotopic signature of planktonic foraminifera from NE-Atlantic surface sediments: Implications for the reconstruction of past oceanic conditions, J. Geol. Soc. London, 157, 693-699.
46. 3 dissolution at intermediate water depths ofthe Caribbean and western North Atlantic: Implications form intermediate water circulation during the past 200,000 years, Paleoceanography, 11(6), 701-716.
47. Hastings, D. W., S. R. Emerson, J. Erez, and B. R. Nelson (1996), Vanadium in foraminiferal calcite: Evaluation of a method to determine paleo-seawater vanadium concentrations, Geochim. Cosmochim. Acta, 60(19), 3701-3715.
48. Hastings, D. W., S. R. Emerson, J. Erez, and B. R. Nelson (1998), Foraminiferal magnesium in Globigerinoides sacculifer as a paleotemperature proxy, Paleoceanography, 13(2), 161-169.
49. Hecht, A. D., E. V. Eslinger, and L. B. Garmon (1975), Experimental studies on the dissolution of planktonic forami-nifera, in Dissolution of Deep-Sea Carbonates, Spec. Publ. 13, edited by W. V. Sliter, A. W. H. Bé, and W. H. Berger, pp. 56-69, Cushman Found. for Foraminiferal Res., Washington, D. C.
50. Hemleben, C., M. Spindler, and O. R. Anderson (Eds.) (1989), Modern Planktonic Foraminifera, 363 pp., Springer, New York.
51. Hilbrecht, H., (Ed.) (1996), Extant Planktic Foraminifera and the Physical Environment in the Atlantic and Indian Oceans, Neue Folge 300, 93 pp., Mitteilungen aus dem Geologischen Institut der Eidgen, Tech. Hochschule und der Univ. Zürich, Zurich, Switzerland.
52. 3 in the ocean, Global Biogeochem. Cycles, 16(2), 1027, Doi:10.1029/2000GB001279.
53. Johns, W. E., T. L. Townsend, D. M. Fratantoni, and W. D. Wilson (2002), On the Atlantic inflow to the Caribbean Sea, Deep Sea Res., Part I, 49, 211-243.
54. Joyce, T. M., R. S. Pickart, and R. C. Millard (1999), Long-term hydrographic changes at 52 and 66°Win the North Atlantic Subtropical Gyre and Caribbean, Deep Sea Res., Part II, 46, 245-278.
55. Kameo, K. (2002), Late Pliocene Caribbean surface water dynamics and climatic changes based on calcareous nannofos-sil records, Palaeogeogr. Palaeoclimatol. Palaeoecol., 179, 211-226.
56. Kemle-von Mücke, S., and H. Oberhansli (1999), The distribution of living planktic foraminifera in relation to southeast Atlantic oceanography, in Use of Proxies in Paleoceanography: Examples from the South Atlantic, edited by G. Fischer and G. Wefer, pp. 91- 115, Springer, New York.
57. Kennett, J. P., and M. S. Srinivasan (Eds.) (1983), Neogene Planktonic Foraminifera, A Phylogenetic Atlas, 265 pp., John Wiley, Hoboken, N. J.
58. Kroon, D., and K. Darling (1995), Size and upwelling control of the stable isotope composition of Neogloboquadrina dutertrei (d'Orbigny), Globigerinoides ruber (d'Orbigny), and Globigerina bulliodes (d'Orbigny): Examples from the Panama Basin and the Arabian Sea, J. Foraminiferal Res., 25, 39-52.
59. Larsen, J. C. (1992), Transport and heat flux of the Florida Current at 27°N derived from the cross-steam voltages and profiling data: Theory and observation, Philos.Trans.R. Soc. London, Ser. A, 338, 169-236.
60. Lea, D. W. (2003), Elemental and isotopic proxies of past ocean temperatures, in Treatise on Geochemistry: The Oceans and Marine Geochemistry,vol.6,edited by H. Elderfield, pp. 365-390, Elsevier, New York.
61. Lea, D. W., T. A. Mashiotta, and H. J. Spero (1999), Controls on the magnesium and strontium uptake in planktonic for-aminifera determined by live culturing, Geochim. Cosmochim. Acta, 63(16), 2369-2379.
62. Lea, D. W., D. K. Pak, and H. J. Spero (2000), Climate impact of late quaternary equatorial Pacific sea surface temperature variations, Science, 289, 1719-1724.
63. 2 System Calculations, oRNL/CDiAC-105, Carbon Dioxide Inf. Anal. Cent., Oak Ridge Natl. Lab., U.S. Dep. of Energy, Oak Ridge, Tenn.
64. 18O records of multiple species of planktonic foraminifera: High-resolution records from the anoxic Cariaco Basin, Venezuela, Paleoceanography, 12(3), 415-427.
65. Lohmann, G. (1995), A model for variation in the chemistry of planktonic foraminifera due to secondary calcification and selective dissolution, Paleoceanography, 10(3), 445-457.
66. Lorens, R. B., D. F. Williams, and M. L. Bender (1977), The early nonstructual chemical diagenesis of foraminiferal calcite, J. Sediment. Petrol., 47, 1602-1609.
67. 18O-water using foraminiferal Mg, Earth Planet. Sci. Lett., 170, 417-432.
68. McConnell, M. C., and R. C. Thunell (2005), Calibration of the planktonic foraminiferal Mg/Ca paleothermometer: Sediment trap results from the Guaymas Basin, Gulf of California, Paleoceanography, 20, PA2016, Doi:10.1029/ 2004PA001077. (Pubitemid 41410766)
69. McKenna, V. S., and W. L. Prell (2004), Calibration of the Mg/Ca of Globorotalia truncatulinoides (R) for the reconstruction of marine temperature gradients, Paleoceanography, 19, PA2006, Doi:10.1029/2000PA000604. (Pubitemid 39250682)
70. Miao, Q., R. C. Thunell, and D. M. Anderson (1994), Glacial-Holocene carbonate dissolution and sea surface in the South China and Sulu seas, Paleoceanography, 9(2), 269-290.
71. Molinari, R., E. Johns, and J. F. Festa (1990), The annual cycle of meridional heat flux in the Atlantic Ocean at 26.5°N, J. Phys. Oceanogr., 20, 476-482.
72. Morrison, J. M., and W. D. Nowlin (1982), General distribution of water masses within the Eastern Caribbean Sea during the winter of 1972 and fall of 1973, J. Geophys. Res., 87(C6), 4207-4229.
73. Morrison, J. M., and O. P. Smith (1990), Geostrophic transport variability along the Aves Ridge in the eastern Caribbean Sea during 1985 and 1986, J. Geophys. Res., 95, 699-710.
74. Mulitza, S., A. Dürkoop, W. Hale, and G. Wefer (1997), Plank-tonic foraminifera as recorders of past surface-water stratification, Geology, 25(4), 335-338.
75. Mulitza, S., B. Donner, G. Fischer, A. Paul, J. Pätzold, C. Rühlemann, and M. Segl (2003), The South Atlantic oxygen isotope record of planktic foraminifera, in The South Atlantic in the Late Quaternary: Reconstruction of Material Budgets and Current Systems, edited by G. Wefer, S. Mulitza, and V. Ratmeyer, pp. 121- 142, Springer, New York.
76. National Oceanographic and Data Center (NODC) (2001), World Ocean Atlas 2001: Objective Analyses, Data Statistics, and Figures, CD-ROM documentation, Natl. Oceanic and Atmos. Admin., Silver Spring, Md.
77. Nürnberg, D. (1995), Magnesium in tests of Neogloboquadrina pachyderma sinistral from high Northern and Southern latitudes, J. Foraminiferal Res., 25(4), 350-368.
78. Nürnberg, D. (2000), Taking the temperature of past ocean surfaces, Science, 289, 1698-1699.
79. Nürnberg, D., and J. Groeneveld (2006), Pleistocene variability of the Subtropical Convergence at East Tasman Plateau: Evidence from planktonic foraminiferal Mg/Ca (ODP Site 1172A), Geochem. Geophys. Geosyst., 7, Q04P11, Doi:10.1029/2005GC000984.
80. Nürnberg, D., J. Bijma, and C. Hemleben (1996a), Assessing the reliability of magnesium in foraminiferal calcite as a proxy for water mass temperatures, Geochim. Cosmochim. Acta, 60(5), 803-814.
81. Nürnberg, D., J. Bijma, and C. Hemleben (1996b), Erratum, Geochim. Cosmochim. Acta, 60(13), 2483-2484.
82. Nürnberg, D., A. Müller, and R. R. Schneider (2000), Paleo-sea surface temperature calculations in the equatorial East Atlantic from Mg/Ca ratios in planktic foraminifera: A comparison to sea surface temperature estimates from Uk'37 oxygen isotopes, and foraminiferal transfer function, Paleo-ceanography, 15(1), 124-134.
83. Nürnberg, D., J. Schönfeld, W.-C. Dullo, and C. Rühlemann (Eds.) (2003), RV SONNE: Cruise Report SO164 RASTA (2002), vol.109, 151 pp., GEOMAR Report, IFM-GEOMAR, Kiel, Germany.
84. Ortiz, J. D., A. C. Mix, and R. W. Collier (1995), Environmental control of living symbiotic and asymbiotic foramini-fera of the California Current, Paleoceanography, 10, 987-1009.
85. Ortiz, J. D., A. C. Mix, W. Rugh, J. M. Watkins, and R. W. Collier (1996), Deep-dwelling planktonic foraminifera of the Northeast Pacific reveal environmental control of oxygen and carbon isotopic disequilibria, Geochim. Cosmochim. Acta, 60, 4509-4523.
86. Ortiz, J. D., A. C. Mix, S. Hostetler, and M. Kashgarian (1997), The California Current of the Last Glacial Maximum at 42°N: Reconstruction based on multiple proxies, Paleoceanography, 12, 191-206.
87. Pahnke, K., and R. Zahn (2005), Southern Hemisphere water mass conversion linked with North Atlantic climate variability, Science, 18, 1741-1746.
88. Ravelo, A. C., and R. G. Fairbanks (1992), Oxygen isotopic composition of multiple species of planktonic foraminifera: Recorders of the modern photic zone temperature gradient, Paleoceanography, 7(6), 815-831.
89. Reimer, P. J., et al. (2004), IntCal04 Terrestrial radiocarbon age calibration, 26-0 ka BP, Radiocarbon, 46, 1029-1058.
90. Rickaby, R., and P. Halloran (2005), Cool La Niña during the warmth of the Pliocene?, Science, 307, 1948-1952, Doi:10.1126/science.1104666. (Pubitemid 40404701)
91. Rosenthal, Y., and E. A. Boyle (1993), Factors controlling the flouride content of planktonic foraminifera: An evaluation of its paleoceanographic applicability, Geochim. Cosmochim. Acta, 57, 335-346.
92. Rosenthal, Y., and G. P. Lohmann (2002), Accurate estimation of sea surface temperatures using dissolution-corrected calibrations for Mg/Ca paleothermometry, Paleoceanography, 17(3), 1044, Doi:10.1029/2001PA000749.
93. 16O of seawater, Paleoceanography, 15(1), 135-145.
94. Rosenthal, Y., et al. (2004), Interlaboratory comparison study of Mg/Ca and Sr/Ca measurements in planktonic foraminifera for paleoceanographic research, Geochem. Geophys. Geosyst., 5, Q04D09, Doi:10.1029/2003GC000650.
95. Russell, A. D., S. Emerson, B. K. Nelson, J. Erez, and D. W. Lea (1994), Uranium in foraminiferal calcite as a recorder of seawater uranium concentrations, Geochim. Cosmochim. Acta, 58, 671-681.
96. Russell, A. D., B. Hönisch, H. J. Spero, and D. W. Lea (2004), Effects of seawater carbonate ion concentration and temperature on shell U, Mg, and Sr in cultured planktonic foramini-fera, Geochim. Cosmochim. Acta, 68(21), 4347-4361, Doi:10.1016/j.gca.2004.03.013. (Pubitemid 39454549)
97. Sadekov, A. Yu., S. M. Eggins, and P. De Deckker (2005), Characterization of Mg/Ca distributions in planktonic fora-minifera species by electron microprobe mapping, Geochem. Geophys. Geosyst., 6, Q12P06, Doi:10.1029/ 2005GC000973.
98. Sautter, L. R., and R. C. Thunell (1991a), Seasonal variability in the oxygen and carbon isotopic composition of planktonic foraminifera from an upwelling environment: Sediment trap results from the San Pedro Basin, Southern California Bight, Paleoceanography, 6, 307-334.
99. Sautter, L. R., and R. C. Thunell (1991b), Planktonic foraminiferal response to upwelling and seasonal hydrographic conditions: Sediment trap results from the San Pedro Basin, Southern California Bight, J. Foraminiferal Res., 21, 347-363.
100. Savin, S. M., and R. G. Douglas (1973), Stable isotope and magnesium geochemistry of recent planktonic foraminifera from the South Pacific, Geol. Soc. Am. Bull., 84(7), 2327-2342.
101. Schlitzer, R. (Ed.) (2002), Ocean Data View, Alfred Wegener Inst., Bremerhaven, Germany. (Available at http://www.awi-bremerhaven.de/GEO/ODV.)
102. Schmidt, M. W., H. J. Spero, and D. W. Lea (2004), Links between salinity variation in the Caribbean and North Atlantic thermohaline circulation, Nature, 428, 160-163.
103. Schmuker, B. (2000), Recent planktic foraminifera in the Caribbean Sea: Distribution, ecology and taphonomy, Ph.D. thesis, ETH Zürich, Zurich, Switzerland.
104. Schmuker, B., and R. Schiebel (2002), Planktic foraminifers and hydrography of the eastern and northern Caribbean Sea, Mar. Micropaleontol., 428, 387-403.
105. Schott, F. A., T. N. Lee, and R. Zantopp (1988), Variability of structure and transport of the Florida Current in the period range of days to seasonal, J. Phys. Oceanogr., 18(9), 1209-1230.
106. Schweitzer, P. N., and G. P. Lohmann (1991), Ontogeny and habitat of modern menardiiform planktonic foraminifera, J. Foraminiferal Res., 21, 332-346.
107. Spero, H. J., and D. F. Williams (1989), Opening the carbon isotope vital effect black box, 1, Seasonal temperatures in the euphotic zone, Paleoceanography, 4(6), 593-601.
108. Stalcup, M. C., W. G. Metcalf, and R. G. Johnson (1975), Deep Caribbean inflow through the Anageda-Jungfern Passage, J. Mar. Res., 33, suppl., 15-35.
109. Steinke, S., H. Chiu, P. Yu, C. Shen, L. Löwemark, H. Mii, and M. Chen (2005), Mg/Ca ratios of two Globigerinoides ruber (white) morphotypes: Implications for reconstructing past tropical/subtropical surface water conditions, Geochem. Geophys. Geosyst., 6, Q11005, Doi:10.1029/2005GC000926.
110. 14CHRONO Centre, Queens Univ. Belfast, Belfast, UK. (Available at http://radiocarbon.pa.qub. ac.uk/calib.)
111. Tedesco, K. A., and R. Thunell (2003), Seasonal and interannual variations in planktonic foraminiferal flux and assemblage composition in the Cariaco Basin, Venezuela, J. Foraminiferal Res., 33(3), 192-210.
112. Tyrrell, T., and R. E. Zeebe (2004), History of carbonate ion concentration over the last 100 million years, Geochim. Cosmochim. Acta, 68(17), 3521-3530.
113. Walter, L. M., and J. W. Morse (1985), The dissolution kinetics of shallow marine carbonates in seawater: A laboratory study, Geochim. Cosmochim. Acta, 49, 1503-1514.
114. 16O ratios in corals, Mar. Geol., 173, 21-35.
115. Watkins, J. M., and A. C. Mix (1998), Testing the effects of tropical temperature, productivity, and mixed-layer depth on foraminiferal transfer functions, Paleoceanography, 13(1), 96-105.
116. Whitko, A. N., D. W. Hastings, and B. P. Flower (2002), Past sea surface temperatures in the tropical South China Sea based on a new foraminiferal Mg calibration, MARsci, Doi:MARSci.2002.01.020101.
117. Williams, D. F., A. W. H. Bé, and R. G. Fairbanks (1981), Seasonal stable isotopic variations in living planktonic foraminifera from Bermuda plankton tows, Palaeogeogr. Palaeoclimatol. Palaeoecol., 33, 71-102.
118. Wüst, G. (1963), On the stratification and the circulation in the cold water sphere of the Antillean-Caribbean basins, Deep Sea Res. Oceanogr. Abstr., 10, 165-187.
119. Wüst, G. (Ed.) (1964), Stratification and Circulation in the Antillean-Caribbean Basins, Part 1: Spreading and Mixing of the Water Types with an Oceanographic Atlas, 201 pp., Columbia Univ. Press, New York.
120. Zahn, R., D. Meischner, and C. Hemleben (Eds.) (1996), Research Vessel METEOR Cruise No.35 (1996): Caribbean Sea, Sargasso Sea,Inst.für Meereskunde der Univ. Hamburg, Leitstelle METEOR, Hamburg, Germany.