Publications

Journals/Books

(3) Marine to continental transition in Himalayan foreland, M.K. bera, A. Sarkar, P.P. Chakrabarty et al., Bulletin Geological Society of America, 2007 (In press )

(4) Stable isotope evidence of dual (Arabian Sea and Bay of Bengal) vapour sources in   monsoonal precipitation over north India,  Saikat Sengupta and   A. Sarkar,  Earth and Planetary Science Letters (3.887; El Sevier), 250, 511–521, 2006.

(5) Geochronological constraints on evolution of Singhbhum mobile belt and   associated  basic volcanics of Eastern Indian shield: comment, A. Roy and A. Sarkar, Gondwana   Research (1.25, Elsevier),  9, 541-542, 2006

(6) Late Archaean mantle metasomatism below Eastern Indian craton : evidence from trace elements,  REE geochemistry and Sr,  Nd and  O  isotope systematics of ultramafic dykes, A. Roy, A. Sarkar1, S. Jeyakumar, S.K. Aggrawal   and M. Ebihara, Procds. Ind. Acad. of Science, 2004, 113, 649-665.

(7) Discussions on C, O, Sr and Pb isotope systematics of carbonate sequences of the Vindhyan Supergroup, India: age, diagenesis, correlations and implications for global events by J. S. Ray, J. Veizer and W.J. Davis (Precambrian Research, 121, 2003,103-140), P.P. Chakraborty  and A. Sarkar, Precambrian Research, 129,185-188, 2004

(8) Carbonate geochemistry across the Eocene-Oligocene boundary of Kutch, western India: Implications to oceanic O₂-poor condition and foraminiferal extinction, A. Sarkar, S. Sarangi, M. Ebihara, S.K. Bhattacharya and A.K. Ray, Chemical Geology (Elsevier), 201, 281-293, 2003.

(9) Carbon isotopes across the Eocene-Oligocene boundary sequence of Kutch, western India: Implications to oceanic productivity and pCO₂ change, A. Sarkar, S. Sarangi, S.K. Bhattacharya and A.K. Ray, Geophysical Research Letters (American Geophysical Union), 30, 1588-1591, 2003

(10) Geochemical and organic carbon isotope studies across the continental Permo-Triassic boundary of Raniganj basin, Eastern India, A.Sarkar, H. Yoshioka, M. Ebihara and H. Naraoka, Palaeogeog. Palaeoclim. Palaeoecol. (Elsevier), 191, 1-14, 2003.

(11) Sm-Nd age and mantle source characteristics of the Dhanjori volcanic rocks, Eastern India, A.Roy, A. Sarkar, S. Jeyakumar et al., Geochemical Journal (Geochemical Society of Japan), 36, 503-518, 2002.

(12) Isotopic and sedimentological clues to productivity change in late Riphean sea: A case study from two intracratonic basins of India, P.P. Chakraborty, A. Sarkar, S.K. Bhattacharya and P. Sanyal, Procds. Indian Acad. Sc. (EPS), 111,379-390, 2002.

(13) Mid-Proterozoic plume related thermal event in Eastern  Indian craton: evidence from trace elements, REE geochemistry and Sr Nd isotope systematics of mafic-ultramafic intrusives from Dalma volcanic belt,  A. Roy, A. Sarkar, S. Jeyakumar, S.K. Aggrawal   and M. Ebihara, Gondwana Research, 5, 133-146, 2002.

(14) Growth rate and life span of Eocene/Oligocene Nummulites tests: inferences from Sr/Ca ratio. S. Sarangi, A. Sarkar, M.M. Sarin, S.K. Bhattacharya, M. Ebihara and A.K. Ray, Terra Nova (European Journal of Geoscience), 13, 264-269, 2001

(15) Magnetic susceptibility and organic carbon isotopes of sediments across some marine and terrestrial Permo-Triassic boundaries, In: H. Yin, J.M. Dickins (ed.) Permian-Triassic evolution of Tethys and Western Circum-Pacific, Elsevier Science,  H.J. Hansen, A. Sarkar, S. Lojen, P. Toft, 271-290, 2000.

(16) Palaeomonsoon and palaeoproductivity records in d¹⁸O and d¹³C and CaCO₃ variations in  northern  Indian  ocean sediments.  A.Sarkar,  R. Ramesh, S.  K. Bhattacharya  and N.B.  Price, Proc. Ind. Acad. Sc., Earth Planet. Sc.,  Prof. K. Gopalan  commerotative vol., 109, 157-170, 2000

(17) Isotopic  evidence   of  a  rapid   cooling   and  continuous sedimentation across the Eocene-Oligocene    boundary  of  Wagapadhar   and Waior, Kutch, S. Sarangi, A.Sarkar, S.K. Bhattacharya and A. K. Ray, Jour. Geol. Soc. Ind.,51,248-251,1998.

(18) Sr, Pb,  Nd   isotope     studies  and  their  bearing  on  the  petrogenesis  of  the Jalor  and   Siwana  complexes,   Rajasthan,   India  by  Dhar  et al.:  A   comment.,  A.Roy  and  A. Sarkar,  Jour. Geol. Soc.  Ind . , 49, 465-466, 1997.

(19) Rare  earth element geochemistry of selected mafic-ultramafic units from Singbhum craton: Implications to source heterogeneity, A. Roy, A.Sarkar, S.  K. Bhattacharya, H.Ozaki and M. Ebihara, Jour. Geol. Soc. Ind, 50, 716-727, 1997.

(20) Strontium   isotope  study of   Krol-Tal   carbonates:  implication  to  the    strontium isotope    flux   of   Himalayan   rivers.  A. Sarkar,  A. Roy,  G.S.  Ghatak  and  S. K. Bhattacharya, Ind. Jour. Geol., 68, 255-262, 1996

(21) Lameta age: Dating the main pulse of   Deccan traps volcanism, H.J. Hansen,   D.M. Mohabey and A. Sarkar, Gondwana Geol. Mag.,2, 365-374, 1996

(22) Stable     isotope   and   faunal   assemblage   studies  of  early Palaeogene sequence, Kutch, Western  India: Palaeoenvironmental implications.  A. Sarkar,  A.  K.  Roy and  S.K.  Bhattacharya, Palaeogeog. Palaeoclim. Palaeoecol. (Elsevier),121, 65-71,1996.

(23) Geochemical evidence for  anoxic deep water in  the  Arabian sea during the last    glaciation. A. Sarkar,  S.  K.  Bhattacharya and M. M. Sarin, Geochim. Cosmochim. Acta (Pergamon Press), 57, 1009-1016, 1993.

(24) High    resolution  d¹⁸O    profile  of   stable  isotopes   and  Iridium  across   a    K/T  boundary  section   from  Koshak   hill, Mangyshlak, Kazakhstan.,  A. Sarkar,  S.  K. Bhattacharya,  P.N.  Shukla,  N. Bhandari  and  D.P. Naidin, Terra Nova (European Jour. Geosc.), 585-590,1992.

(25) Mean proloculus  size, d¹⁸O and  d¹³C  variations   in   recent  benthic     foraminiferas from   West   coast,   India:   Climatic implications. R. Nigam and A. Sarkar,  Ind. Jour.  Earth  Sc., 20, 11-6, 1993.

(26) Glacial to interglacial isotopic changes  in  planktonic  and benthic foraminifera from     the western Arabian sea. A.Sarkar  and S. K. Bhattacharya, In: Desai, B.N. (ed.), Oceanography  of  the Indian ocean, 417-425,1992, Oxford & IBH, New Delhi

(27) Carbonatites from Rajasthan indicate mantle carbon and oxygen isotopic composition.  A.   Sarkar and S. K. Bhattacharya,  Current Science, vol.62, No.4, 368-370, 1992.

(28) Stable  isotope  analysis of dinosaur eggshells   paleoenvironmental  implications :  A. Sarkar, S. K.  Battacharya and  D.M.  Mohabey,  Geology  (Geol.  Soc.  America), vol. 19, 1068-1071, 1991.

(29) Cretaceous-Tertiary       boundary   marine   extinctions:   the Russian platform record.   Y. Herman,  S. K. Bhattacharya,  K. Perch-Nielsen, D.P. Naidin, V. T. Frolov,  J.   D. Jeffers   and    A. Sarkar,  Revista Espanola de  Paleontologia,  n. Extraordinario  131-140, 1988.

(30) Effect  of sample pretreatment and size  fraction on  the d¹⁸O and d¹³C values of foraminifera in  Arabian   sea  sediments.  A.Sarkar, R. Ramesh and S. K. Bhattacharya, Terra  Nova (European Jour. Geosc.), vol.2, 488-493, 1990.

(31) Oxygen isotope evidence for a stronger winter monsoon current during the last glaciation. A.Sarkar, R.Ramesh, S.K.Bhattacharya and G. Rajagopalan, Nature, vol. 343, 549-551,  1990.

(32) Cretaceous-Tertiary boundary: an  enigma  in  earth sciences sciences. A. Sarkar, Ind. Jour.  Earth  Sc., vol.13,no.1, 14-37,1986.

Papers under publication

1) Stable isotopes in oyster shells from ganges delta, india: palaeoenvironmental implications, A. Sarkar, S.K. Bhattacharya and, A. Chakrabarti, Chemical Geology (under review)

International conference proceedings

1.       d¹⁸O  studies in dinosaur eggshells: A clue to palaeowind.  A.Sarkar and S. K.  Bhattacharya,  Sixth  International  Conf.  On Gochronology, Cosmochronology and Isotope  Geology  (ICOG), Cambridge, UK, Terra Cognita, 6, no.2, 1986.

2.       Palaeoceanographic studies in the Arabian sea. A. Sarkar,  R. Ramesh and S. K.  Bhattacharya,  Third  International  Conf. On Palaeoceanography, Cambridge, UK, 1989.

3.       Correlated enrichment of uranium and  organic  carbon  in  an eastern Arabian sea core during the last glacial maximum  (LGM. A. Sarkar, S. K. Bhattacharya and M. M. Sarin  ,  Seventh  ICOG, Canberra,Australia, 1990.

4.       d¹⁸O  Evidence of  a  rapid  temperature  change across  K/T  boundary:signature in the Mangyshlak sediments, S.K.Bhattacharya and A. Sarkar, Seventh ICOG, Canberra, Australia, 1990.

5.       Late Pleistocene palaeoclimate of  the northern Indian  ocean, A.  Sarkar,  R.  Ramesh  and  S.  K.  Bhattacharya,   XIII  INQUA congress, Beijing, China, 1991.

6.       Cretaceous-Tertiary boundary  of  Mangyshlak,  Kazakhstan  and Eocene-Oligocene  boundary  of  western  India:  stable   isotope profiles of two shallow  marine  carbonate  sequences.  A.Sarkar, A.K.  Ray  and  S. K.  Bhattacharya,  Global   boundary  events conference, Kielce, Poland, 1993.

7.       Stable  isotopes of Lameta sediments and  associated  dinosaur eggshells  from  Gujarat, A. Sarkar, Conf. On  Geochemical  event markers in Phanerozoic, Erlangen, Germany, 1994

8.       Dating the most extensive Deccan  trap  activity  by  magnetic susceptibility  stratigraphy  of  Lameta  sediments, India,  H.J. Hansen, A. Sarkar, D. M. Mohabey, R. Gwodz and P. Toft, 4^th  Int. Workshop on the ESF scientific network on Impact  cratering  and Evolution of planet earth, Ancona, Italy, 1995

9.       Low  latitude  cooling across  the  Eocene-Oligocene boundary: Oxygen isotope evidence from Kutch Palaeogene sequence,S.Sarangi, A. Sarkar, S.K. Bhattacharya and A. K. Ray, Int.conf. On Isotopes In solar system, Phys. Res. Lab., Ahmedabad,1997

10.   Eustatic  change,  anoxia   and    foraminiferal   extinction across the Eocene-Oligocene boundary  of  Kutch:  evidence  from  REE geochemistry and  carbon  isotopes,  A. Sarkar,  S.  Sarangi, S. K. Bhattacharya  and  M.  Ebihara, Int.  conf. on  Isotopes in solar system, Phys. Res. Lab., Ahmedabad, 1997

11.   Warm early Palaeogene carbonate clastic shoreline: stable isotope and geochemical evidences from Kutch Tertiary, Int. conf. On warm Early Paleogene environment, Goteborg, Sweden, 1999.

12.   Sedimentology, faunal, isotopic and geochemical studies of Kutch basin, western India: implications to the palaeoenvironmental evolution during the Paleogene, IGCP meeting on Climate and biota of early Paleogene, Smithsonian Inst., Wyoming, USA, 2001.

National conference proceedings

1.       Stable isotope studies in Indian carbonatites. A. Sarkar,  S. K. Bhattacharya, R. K. Srivastava and V. Chandrasekharan.  Third National Symposium on Mass Spectrometry (NSMS, Hyderabad,1985.

2.       Interclutch d¹⁸O variations in  dinosaurian eggshells: A  clue to palaeoclimatic study. A. Sarkar, S. K. Bhattacharya and D. M. Mohabey, Symposium on  isotope  based  studies  on  problems  of Indian Geology, Calcutta, 1986.

3.       Geochronological studies of some deep sea cores from  Arabian Sea  and Indian  ocean. A. Sarkar, M.M. Sarin and G.Rajagopalan, Seminar on recent geoscientific studies in the  Arabian  sea off India, Geol. Surv. Ind., Mangalore, 1987.

4.       An on-line CO₂ extraction system for stable isotope  analysis of carbonates. A. Sarkar and S. K.  Bhattacharya,  Fourth  NSMS, Bangalore, 1988.

5.       Glacial to interglacial isotopic changes  in  planktonic  and benthic foraminifera from western Arabian sea. A. Sarkar and  S.K. Bhattacharya, International symp. On oceanography  of  Indian ocean, Goa, 1991.

6.       Carbon isotope in planktonic foraminifera and  palaeomonsoon, A.Sarkar, R.Ramesh and S.K. Bhattacharya, Fifth NSMS  Ahmedabad, 1991.

7.       Multiple dating of Indian ocean sediments. A. Sarkar, Seminar on  recent  trends  of  research  in  Earth   Sciences,  Geology Department, Presidency College, Calcutta, 1992.

8.       Environmental changes during the past few centuries based  on geochemical studies of sediments from the north-eastern  Arabian sea. B.L.K. Somayajulu, D.N. Yadav, A. Sarkar  and  M.M.  Sarin, Procds. Nat. Symp. Space Sc.,Phys. Res.  Lab.,Ahmedabad, 1992

9.       Comparative  isotopic signatures  across  Cretaceous-Tertiary boundary, Mangyshlak,Kazakhstan and  Eocene-Oligocene  boundary, Kutch, western India. A.Sarkar,  A.K.Ray,  S.K.Bhattacharya  and R.A.Jani,6^th NSMS, Indian Institute of Petroleum,Dehradun, 1993.

10.  Analysis of nanogram amounts of Nd and Sm as metal  ions  by  thermal  ionisation  mass  spectrometers  coupled  to a variable multi-collection  Faraday   cup  detector  assembly,  A. Roy, S.Jeyakumar, A. Sarkar and H.C. Jain, 7^th NSMS, Gwalior, 1996.

11.   Carbon isotopes of residual carbon in mantle derived  rocks: Implications to heterogeneity, A. Sarkar and H.J.Hansen,7^th NSMS Gwalior,1996

12.   Carbon  in  Deccan  basalts: Implications  to carbon isotope anomaly near   K/T  boundary,  A.  Sarkar, H. J.Hansen and D. M. Mohabey,  Conf. Phys. Biol. Changes across the major  geological boundaries, Lucknow 1996

13.   Stable  isotope  evidence  of  catastrophic  climatic change across the Eocene-Oligocene  boundary, Kutch, S.Sarangi  and  A.Sarkar, Conf.Phys. Biol. Changes across  the  major   geological boundaries, Lucknow, 1996

14.   Late Archaean mantle metasomatism below eastern Indian  craton: Evidence from trace,rare  earth elements  and  Sr-Nd  isotope systematics of ultramafic dykes, A. Roy, A. Sarkar, S. Jeyakumar, S.K. Aggrawal and M.Ebihara, Nat. symp. On mass spectrometry, Hyderabad, 1999.

15.   Mid-Proterozoic plume related thermal event in eastern Indian  craton:Evidence from trace elemnts, REE geochemistry and  Sr-Nd  isotope systematics of mafic ultramafic intrusives from Dalma volcanic belt,      A. Roy, A. Sarkar, S. Jeyakumar, S.K. Aggrawal and M.Ebihara, Nat. symp. Mass spectrometry, Hyderabad, 1999.