1991-92 - Birbal Sahni Institute of Palaeobotany

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BSIPclinicalimplicationsObjective ,To daily monitorsurrounding areasperiodicitythe aerospora of Lucknow andfor their seasonal and diurnal,To identify aeroal/ergens by biochemical and clinica/investigations,To enumerate biota in the aerospora both quantity-wiseand quality-wise employing both gravimetr;cand volumetric techniques in order to achieveprecision in seasonal and diurnal periodicityTwo rain samples collected during the year 1991 (15.06.91 & 26.12.91) exhibitedalmost the same composition of biogenic pollutants as was recorded in theprevious year at the same place. However, a few species of diatom Gomphonemaand pollen of Parthenium hysterophorus, Morus alba, Putralljiva roxburghii, etc.were recorded in the year 1991. The biological degradation of pollen and sporeshas been recorded.AshaKhandelwalPROJECT 8Programme 8.1,GEOCHRONOMETRY OF INDIAN ROCKS,Radiocarbon dating of Quaternary deposits andmaterials of archaeobotanical importance'0+c•'"o'0oo ~ '00Sample depth in the core (em)"0Sea.Radiocarbon age vs. depth of the calcareous sediment core (SM-61) off Narcondam Island in Andaman46
1991-92Objective: To date Quaternary sediment profiles, ocean sedimentcores, coastal deposits and shell depositsand Kankar horizons in the Ganga plain: To establish the Liquid Scintillation Countingmethod for C-14 datingEighty two samples were processed for radiocarbon dating which included 14background and three stan~ard preparations. For twenty one samples benzene wassynthcsized for C-14 determination using liquid scintillation counting method.Fifty samples have been dated using both the methods (viz. gas counting and liquidscintillation counting) C-14 age determination.A fifty two metre thick Quaternary sediment profile from BHaspur, Nainitalwas dated for a collaborative programme with the Kumaon University on neotectonicactivity of the region. The top 20 metres is within the C-14 age range and onlytwo samples could be dated in this interval. The sedimentation rate is highlyvariable. A core of lake deposit from Orissa relating to the study on the evolutionof mangrove vegetation was dated to 3,470 ± 170 yrs at a depth of 3.5 m. Acarbonaceous ocean-sediment core from Andaman Sea was dated using the organicfraction of the sediment. In this core the calcareous part was almost negligible.The C-14 age at a depth of 33 cm is 11,850 yrs and at 1.0 m it is 21,000 yrs. Thecalculated sedimentation rate is 0.73 cml1,OOO yrs which is lower than that of thepredominantly calcareous core obtained from near Narcondam Island. A profile ofshell deposit from the shelf region in the East Coast was dated for coastal studies.The shells at a depth of 2.1 m give an age of 33,000 ± 1,200 yrs. In addition C-14age determinations on lake sediment profiles from Darjeeling, Garhwal andNilgiris were carried out for palynological and palaeoclimatic studies. Four charcoalsamples relating to archaeological studies from Nepal and Mesolithic cultureof Kerala were dated. The Mesolithic culture of Kerala has been dated for the firsttime at 2,850 ± 80 yrs B.P.The liquid scintillation method for C-14 dating has been established. 1\velvesamples have been dated using this method. For six samples both the gas countingand liquid scintillation counting methods were employed. The C-14 ages in boththe cases are in very good agreement.Programme 8.2G. Rajagopalan: Fission- Track dating of minerals and fossilmaterialsObjective: To carry out Fission·Track dating of glauconitefrom Vindhyan Supergroup and other equivalentformations: To attempt Fission-Track dating of petrified woodfrom the Deccan Intertrappean beds: To carry out Fission- Track dating of check samplesand International standard samples47
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Birbal Sahni (1891-1949)ANNUAL REPO
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AcknowledgementWe are grateful to t
Page 8 and 9: To coordinate with other knowledge
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Page 12 and 13: 1991-92BIRBAL SAHNIBIRTH CENTENARY
Page 14 and 15: BSIP-----Dr B. S. Venkatachala welc
Page 16 and 17: BSIPDr A. P. Mitra opening the Exhi
Page 18 and 19: BSIPDelegates of the Symposium - Ev
Page 20 and 21: BSIPThe Palaeobotanical Society Int
Page 22 and 23: BSIPGeneral, Geological Survey of I
Page 24 and 25: BSlPin Proterozoic succession of Cu
Page 26 and 27: BSIP";jEuryphy/lum whilt;anum Feist
Page 28 and 29: BSIPin Mahanadi Valley in compariso
Page 30 and 31: BSIP----Au st raIia----
Page 32 and 33: BSIPbeen observed tijat the coals a
Page 34 and 35: BSIPTransverse Section of a monocot
Page 36 and 37: BSIPular fruit of euphorbiaceousaff
Page 38 and 39: BSIPMARINE SEDIMENTARIES OF INDIA1'
Page 40 and 41: BSIPH10~mTrichodinium brel'ispillos
Page 42 and 43: BSIPand time boundaries: To integra
Page 44 and 45: BSIPmarine innuence during Karharba
Page 46 and 47: BSIPIn the light of the distributio
Page 48 and 49: BSIP,To palynologically differentia
Page 50 and 51: BSIPMeghalaya have yielded a rich s
Page 52 and 53: BSIPbetween 1002-944 m show an almo
Page 54 and 55: BSIPTetraploa and Microthyriaceaear
Page 56 and 57: BSIPand a 745 year long (1,243-1,98
Page 60 and 61: BSIPThe Auto Scan system for the fi
Page 62 and 63: BSIPthe Indian Tertiary sedimentsOb
Page 64 and 65: BSIPM.S. ChauhanPart-7Part-8Part-9P
Page 66 and 67: BSIPB.K. MisraAnand PrakashG.K.B. N
Page 68 and 69: BSIPStudied the pollen morphology (
Page 70 and 71: BSIPremains based on field and herb
Page 72 and 73: BSIPPapers SubmittedAgarwal, Anil -
Page 74 and 75: BSIPKapoor, U.M., Maheshwari, U.K.
Page 76 and 77: BSIPSharma, Chhaya - Palaeoclimatic
Page 78 and 79: BS!PAbstractsSubmittedAwasthi, N. -
Page 80 and 81: BSIPPapers PublishedAgarwal, A. 199
Page 82 and 83: BSIPKar, R.K. 1991. Two new spore g
Page 84 and 85: BSIPSingh, H.P., Jain, K.P., Mahesh
Page 86 and 87: BSIPAbstractsPublishedAmbwani, K. &
Page 88 and 89: BSIPDesikachary, T.V., Shukla, Mano
Page 90 and 91: BSIPLucknow : 68.Maheshwari, U.K. 1
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Page 94 and 95: BSIPVenkatachala, B.S., Kar, R.K.,
Page 96 and 97: BSIPGuleria,J.S.Coringoperation at
Page 98 and 99: BSIPPapers Presentedat Symposia/Con
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Page 102 and 103: BSIPMaheshwari, ILK. - Provincialis
Page 104 and 105: BSIPSingh, H.P. - Tertiary palynofo
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BSIPTechnical Assistance renderedto
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•BSIPCourses/Lectures in the Inst
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BSIPG. RajagopalanA.P. SrivastavaB.
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BSIPC.M. NautiyalG. RajagopalanA. R
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BSIPHonours and AwardsAsha GuptaMuk
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BSIPI.Archaean and Proterozoic Pala
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BSIPJawaharlal Nehru University, Ne
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BSIPFlorida Museum of Natural Histo
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BSIPType and Figured specimens/slid
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BSIPInstitutionalVisitors1. U.N. Po
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BSIP22. Henri J. RakotoariveloPalae
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BS!PNeerja Jha, Ph.D. (w.e.f. 01.04
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BSIPTechnical and Administrative Pe
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BSIPKunwarDriversHanuman PrasadLall
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BSIPPromotionsPromotions and Appoin
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BSIPOrganisationalGoverningStructur
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BSIPChief Engineer, U.P.P.W.D. or h
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BSIPInternal Committees1. Research
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BSIPAuditorsto theReportGoverning B
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BSIPBIRBAL SAHNI INSTITUTEOFBalance
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1991-92COMMENTS TO BE READ WITH REF
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1991-92 - Birbal Sahni Institute of Palaeobotany

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