Journal of Earth System Science

, Volume 109, Issue 1, pp 157–169 | Cite as

Palaeomonsoon and palaeoproductivity records of δ18O, δ{13}C and CaCO3 variations in the northern Indian Ocean sedimentsC and CaCO3 variations in the northern Indian Ocean sediments

  • A. Sarkar
  • R. Ramesh
  • S. K. Bhattacharya
  • N. B. Price


δ18 O and δ13C of G.sacculifer have been measured in five cores from the northern Indian Ocean. In addition, high resolution analysis (1 to 2 cm) was performed on one core (SK-20-185) for both δ18O and gd13C in five species of planktonic foraminifera. CaCO3 variation was measured in two cores. The results, presented here, show that
  • • the summer monsoon was weaker during 18 ka and was stronger during 9 ka, relative to modern conditions;

  • • δ13C variations are consistent with independent evidence that shows that during the last glacial maximum (LGM; 18 ka) the upwelling was reduced while during 9 ka it was vigorous;

  • • calculation of CaCO3 flux shows that the LGM was characterized by low biogenic productivity in the Arabian Sea while during the Holocene productivity increased by ∼65%, as a direct consequence of the changes in upwelling. Similar changes (of lesser magnitude) are also seen in the equatorial Indian Ocean. The amount of terrigenous input into the Arabian Sea doubled during LGM possibly due to the higher erosion rate along the west coast.

  • • δ18O values indicate that the Arabian Sea was saltier by 1 to 2%o during LGM. The northern part was dominated by evaporation while in the equatorial part there was an increased precipitation.


Oxygen isotopes carbon isotopes sediments foraminifera productivity monsoon 


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  1. Benn D I and Owen L A 1998 The role of Indian summer monsoon and the mid-latitude westerlies in Himalayan Glaciation: review and speculative discussion;J. Geol. Soc. London 155 353–363.Google Scholar
  2. Bhattacharyya A 1989 Vegetation and climate during the last 30,000 years in Ladakh;Palaeogeog. Palaeoclim. Palaeoecol. 73 25–38CrossRefGoogle Scholar
  3. Berger W H, Killingley J S, Metzler C V and Vincent E 1985 Two step deglaciation:14C dated high resolution δ18O records from the tropical Atlantic;Quat. Res. 23 258–271CrossRefGoogle Scholar
  4. Beufort L, Lancelot Y, Camberlin P, Cayre O, Vincent E, Bassinot F and Labeyrie L D 1997 Insolation cycles as a major control of Equatorial Indian Ocean primary production;Science 278 1451–1454CrossRefGoogle Scholar
  5. Broecker W S and Denton G H 1989 The role of oceanatmosphere reorganizations in glacial cycles;Geochim. Cosmochim. Acta 53 2465–2501CrossRefGoogle Scholar
  6. Clemens S, Prell W, Murray D, Shimmield G and Weedon G 1991 Forcing mechanisms of the Indian Ocean Monsoon;Nature 353 720–725CrossRefGoogle Scholar
  7. Clemens S and Prell W 1991 Late Quaternary forcing of Indian Ocean summer-monsoon winds: A comparison of Fourier model and General Circulation Model results;J. Geophys. Res. 96D12 22683–22700Google Scholar
  8. Cole J, Fairbanks R, Rind D, Koster R, Thompson L and Mosley-Thompson E 1991 Comparison of a high resolution deuterium record from the Dunde ice cap (Tibetan Plateau) and GCM isotope tracer simulations;XIII INQUA Congress Abstracts Beijing China (2-9 August 1991) 63Google Scholar
  9. Duplessy J C, Be A W H and Blanc P L 1981 Oxygen and carbon isotopic composition and biogeographic distribution of planktonic foraminifera in the Indian Ocean;Palaeogeog. Palaeoclim. Palaeoecol. 33 9–46CrossRefGoogle Scholar
  10. Duplessy J C 1982 Glacial to interglacial contrasts in the northern Indian Ocean;Nature 295 494–498CrossRefGoogle Scholar
  11. Emrich K, Ehhalt D H and Vogel J C 1970 Carbon isotope fractionation during precipitation of calcium carbonate;Earth Planet. Sci. Lett. 8 363–371CrossRefGoogle Scholar
  12. Erez J and Luz B 1983 Experimental palaeotemperature equation for planktonic foraminifera;Geochim. Cosmochim. Acta 4 1025–1031CrossRefGoogle Scholar
  13. Gote-Ostland H, Craig H, Broecker W S and Spenser D (ed) 1987Geosecs Atlantic Pacific and Indian Ocean expeditions 7 Washington DC: National Science FoundationGoogle Scholar
  14. Gupta S K, Sharma P and Shah S K 1992 Source of fresh water spike at LGM in the Indian Ocean: An alternative interpretation;J. Quat. Sci. 7 (3) 247–255CrossRefGoogle Scholar
  15. Gupta S K and Sharma P 1993 Enigma of the negative δ18O pulse at LGM -a reply;Curr. Sci. 65 (7) 514–515Google Scholar
  16. Guptha M V S, Naidu P D and Muralinath A S 1990 Premonsoon living planktonic foraminifera from the south-eastern Arabian Sea;J. Geol. Soc. India 36 654–660Google Scholar
  17. Imbrie J, Hays J D, Martinson D G, Mix A C, Morley J J, Pisias N G, Prell W L, and Shackleton N J 1984 The orbital theory of pleistocene climate: support from a revised chronology of the marine δ18O record;Milankovitch and Climate Part-I (eds) A Berger, J Imkbrie, J D Hays and B Saltzman (Dordrecht: Reidel) 269–305Google Scholar
  18. Kallel N, Labeyrie L D, Juille-Leclere A and Duplessy J C 1988 A deep hydrological front between intermediate and deep water masses in the glacial Indian Ocean;Nature 333 651–655CrossRefGoogle Scholar
  19. Krishnamurthy R V 1990 Oxygen in the Arabian Sea;Nature 348 118CrossRefGoogle Scholar
  20. Kroopnick P M 1985 The distribution of δ13C of σCO2 in the world oceans;Deep Sea Res. 32 57–84CrossRefGoogle Scholar
  21. Labeyrie L D, Duplessy J C and Blanc P L 1987 Variations in mode of formation and temperature of oceanic deep waters over the past 125,000 yrs;Nature 327 477–482CrossRefGoogle Scholar
  22. Lyle M W and Dymond J 1976 Metal accumulation rates in the south east Pacific-errors introduced from assumed bulk densities;Earth. Planet. Sci. Lett. 30 164–168CrossRefGoogle Scholar
  23. Mix A C 1987 The oxygen-isotope record of glaciationThe Geology of North America and adjacent oceans during the last deglaciation K-3 (Geological Society of America) 111–135Google Scholar
  24. Naidu P D, Rao P S and Pattan J N 1989 Planktonic foraminifera from a Quaternary deep sea core from the southern Arabian Sea;J. Geol. Soc. India 34 393–397Google Scholar
  25. Naidu P D, Babu P C and Rao Ch M 1992 The upwelling record in the sediments of the western continental margin of India;Deep Sea Res. 39 3/4 715–723 Naidu P D and Malmgren B A 1995a Monsoon upwelling effects on test size of some planktonic foraminiferal species from the Oman Margin, Arabian Sea;Paleoceanography 10 (1) 117–122Google Scholar
  26. Naidu P D and Malmgren B A 1995b Do benthic foraminifer records represent a productivity index in oxygen minimum zone areas? An evaluation from the Oman Margin, Arabian Sea;Marine Micropaleontology 26 49–55CrossRefGoogle Scholar
  27. Naidu P D and Malmgren B A 1996 A high resolution record of Late Quaternary upwelling along the Oman Margin, Arabian Sea based on planktonic foraminifera;Paleoceanography 11 (1) 129–140CrossRefGoogle Scholar
  28. Nair R R and Hashimi N H 1980 Holocene climatic inferences from the sediments of the Western Indian continental shelf;Proc. Indian Acad. Sci. 89-A 299–315Google Scholar
  29. Nair R R, Ittekkot V, Manganini S J, Ramaswamy V, Haake B, Degens E T, Desai B N and Honjo S 1989 Increased particle flux to the deep ocean related to monsoons;Nature 338 749–751CrossRefGoogle Scholar
  30. Naqvi S W A 1993 Enigma of the negative δ18O pulse at LGM;Curr. Sci. 65 (7) 512–514Google Scholar
  31. Naqvi S W A and Fairbanks R G 1996 A 27,000 year record of Red Sea outflow: Implication for the timing of post-glacial monsoon intensification;Geophys. Res. Lett. 23 (12) 1501–1504CrossRefGoogle Scholar
  32. Pande K, Padia J T, Ramesh R and Sharma K K Stable isotope systematics of surface water bodies in the Himalayan and trans-Himalayan (Kashmir) region;Proc. Indian Acad. Sci. (Earth Planet. Sci.) 109, 109-115Google Scholar
  33. Peterson L C and Prell W L 1985 Carbonate preservation and rates of climatic changes: An 800 kyr record from the Indian Ocean;The carbon cycle and atmospheric CO2;Natural Variations Archean to Present (eds) E T Sandquist and W S Broecker 251-269Google Scholar
  34. Prell W L 1978 Glacial-Interglacial variability of monsoonal upwelling: western Arabian Sea;International Conference on Evolution of Planetary Atmospheres and Climatology of the Earth Centre Nice: National d’Etude Spatiales 129–136Google Scholar
  35. Prell W L and Curry W B 1981 Faunal and isotopic indices of monsoonal upwelling: western Arabian Sea;Oceanologica Acta 4 91–98Google Scholar
  36. Prell W L 1984 Monsoonal climate of the Arabian Sea during the late Quaternary: A response to changing solar radiation;Milankovitch and Climate Pt 1 (eds) A L Bergeret al (Dordrecht: Riedel) 349–366Google Scholar
  37. Rostek F, Bard E, Beufort L, Sonzogni C and Ganssen G 1997 Sea surface temperature and productivity records for the past 240 kyr in the Arabian Sea;Deep Sea Res. 44 (6–7) 1461–1480Google Scholar
  38. Sarkar A and Bhattacharya S K 1988 An on-line CO2 extraction system for stable isotope analysis of carbonates;Preprints Volume Fourth National Symposium of Mass Spedrometry (eds) T R Kasturiet al 1–7 Bangalore: Indian Society of Mass Spectrometry 1–3Google Scholar
  39. Sarkar A 1989 Oxygen and carbon isotopes in Indian Ocean sediments and their palaeoclimatic implications; Unpublished PhD thesis, Gujarat University, IndiaGoogle Scholar
  40. Sarkar A, Ramesh R, Bhattacharya S K and Rajagopalan G 1990a Oxygen isotope evidence for a stronger winter monsoon current during the last glaciation;Nature 343 549–551CrossRefGoogle Scholar
  41. Sarkar A, Ramesh R and Bhattacharya S K 1990b Effect of sample pre-treatment and size fraction on the δ18O and δ13C of foraminifera in Arabian Sea sediments;Terra Nova 2 489–493CrossRefGoogle Scholar
  42. Sarkar A, Bhattacharya S K and Sarin M M 1992 Geochemical evidence for anoxic deep water in the Arabian Sea during the last glaciation;Geochim. Comochim. Acta 57 1009–1016CrossRefGoogle Scholar
  43. Shackleton N J and Opdyke N D 1973 Oxygen isotope and palaeomagnetic stratigraphy of equatorial Pacific core V28-238: Oxygen isotope temperatures and ice volumes on a 105 year and 106 year scale;Quat. Res. 3 35–55CrossRefGoogle Scholar
  44. Shackleton N J 1974 Attainment of isotopic equilibrium between ocean water and the benthonic foraminifera genusUvigerina: Isotopic changes in the ocean during the last glacial;Variation du Climat au Cours du Pleistocene CNRS Paris 203–209Google Scholar
  45. Sirocko F, Sarnthein M, Erlenkeuser H, Lange H, Arnold M and Duplessy J C 1993 Century scale events in monsoonal climate over the past 24,000 years;Nature 364 322–324CrossRefGoogle Scholar
  46. Sirocko F, Schoenberg D G, McIntyre A and Molfino B 1996 Teleconnections between the subtropical monsoons and high latitude climates during the last glaciation;Science 272 526–529CrossRefGoogle Scholar
  47. Thompson L G, Mosley-Thompson E, Davis M E, Bolzan J F, Dai J, Yao T, Gundestrup N, Wu X, Klain L and Xie Z, 1989 Holocene-late Pleistocene climatic ice core records from Qunghai-Tibetan Plateau;Science 246 474–477CrossRefGoogle Scholar
  48. Van Campo E, Duplessy J C and Rossignol-Strick M 1982 Climatic conditions deduced from a 150 kyr oxygen isotopepollen record from the Arabian Sea;Nature 296 56–59CrossRefGoogle Scholar
  49. Wyrtki K 1971Oceanographic Atlas of the International Indian Ocean Expedition (Washington DC: National Science Foundation)Google Scholar
  50. Wyrtki K 1973The Biology of the Indian Ocean (ed) Zeitschel (New York: Springer) 18–36Google Scholar

Copyright information

© Indian Academy of Sciences 2000

Authors and Affiliations

  • A. Sarkar
    • 1
  • R. Ramesh
    • 1
  • S. K. Bhattacharya
    • 1
  • N. B. Price
    • 2
  1. 1.Physical Research LaboratoryAhmedabadIndia
  2. 2.Grant Institute of GeologyUniversity of EdinburghEdinburghUK

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