Association of Exploration GeophysicistsProceedings of the 2nd International Seminar & Exhibition

GEOPHYSICS BEYOND 21iii

Promoted by

Oil & Natural Gas Corporation Limited

Oil India Limited

Schlumberger

CGG Pan India Limited

Geometries, U.S.A.

Geoforschungs Zentrum, Germany

Sponsored by

Department of Science and Technology, (Govt. of India)

Oil and Natural Gas Corporation Limited

Medallion Oil Company, U.S.A.

i

Co-sponsored by

National Remote Sensing Agency

Schlumberger Geco Prakla, Mumbai, India

Command Petroleum (India) Pty Limited

Scintrex Limited, Canada

Andhra Pradesh State Remote Sensing Application Centre

UB/TIB Hannover 89118 947 818

CONTENTS

PLENARY SESSION

PS-1 Education Pattern for Geophysics Beyond 2000 A.D. 1Hari Narain

PS-2 Future Geophysical Technology Trends 7Fred Aminzadeh and Ravi Singh

PS-3 Mining Geophysics Beyond 2000 13

Harold O. Seigel

ECONOMICS : EXPLORATION AND EXPLOITATION

Lead Paper

EEE-C1 Economics : Oil Exploration and Exploitation 19

B.B. Sharma and D.N. Avasthi

Extended Abstracts

EEE-1 Seismic Artefacts - A Case History 21N.C. Nanda, R.J. Singh andS. Chopra

EEE-2 Stochastic Characterisation of Gold Mineralisation Using MEM Spectrum and Markovian Models 24D.D. Sarma

EEE-3 GIS Application in Structural Modelling and Zonation for Exploration of Natural Resources -A case Study of Jwalamuhi Area, Himachal Pradesh 25AtulSahai, Bamdeo Tripathi andR.D.Garg

EEE-4 Opportunities and the Future Challenges to Upstream Oil Industries - A Perspective 27A. Saha, R\K. Bhatt and A.K. Pandey

»INTERLINKAGES WITH OTHER SCIENCES

Lead Paper

EOS-C1 Petroleum Geochemistry and Geophysics - Linkages 29

Kuldeep Chandra, N.J. Thomas and M.N. Pandey

Extended Abstracts

EOS-1 Sustainable Utilization of Water Resource in Lapasiya Watershed Siwane Sub-Basin,Hazaribagh, Bihar Using Geographic Information System - A Case Study 39Ashok Kumar, Bharat Bhushan Prasad and Ranjan Sinha

EOS-2 Tectonics of a Part of Northern Peninsular India Deduced from Mesoscopic and MacroscopicCrustal Structures 42Vaibhava Srivastava and V.K. Gairola

EOS-3 Study of Pre-Earthquake Thermal Anomalies in KiHari Area Through Satellite Data 45S.K. Srivastav, Manoj Dangwal, A. Bhattacharya andP.R. Reddy

EOS-4 Delineation of an Active Fault by a MEQ Survey in Indian Peninsular Shield Area, Munger, Bihar 47Reena De, S.N. Chowdhury and D. Banerjee

EOS-5 Study of Uttarkashi Earthquake in Terms of Rupture Model and Isoseismals 49A. Joshi

EOS-6 Deep Tectonic Processes in the Cuddapah Basin and Eastern Ghats 51V.K. Rao and H.C. Tewari

EOS-7 K-T Boundary Asteroidal Impact, Geodynamic Events and Continental Breakup along theWestern Margin of India 52P.K. Agrawal, O.P. Pandey andJ.G. Negi

EOS-8 Nature of Chaos and Limits of Predictability of Length of the Day (LOD) Fluctuations 55R.K. Tewari, J.G. Negi andK.N.N. Rao

EOS-9 Seismotectonics of Earthquake Swarms and their Patterns Characterising the Slow-SpreadingMid-Indian Ocean Ridges 58M. Radha Krishna and S.K. Arora

EOS-10 A Note on Historical Seismicity and Strain Deformation in Indian Shield 59B. Ramalingeswara Rao

EOS-11 Entorpy of Bouguer Anomaly of India and Isostatic Evo lution 60J.G. Negi, A.P. Singh andR. Khanna

EOS-12 Seismic Resolution : A Review 62S.N. Dalei, D. Chatterjee and L.K. Marwah

EOS-13 Statistics in Geological Sciences 68P.S. Moharir

EOS-14 Environment andJGeoprotection 70K.N. Khattri \

EOS-15 Conflicting Conclusions from Geological vis-a-vis Geophysical Studies on Gondwana LandReconstructions and their Implications on Oil/Gas Exploration in East Coast of India 71

V.V.Sastri

REMOTE SENSING

Lead Paper

RS-C1 Operationalisation of Remote Sensing for National Development 75

D.P. Rao

Extended Abstracts

RS-1 Digital Analysis for Oil Pipeline Route Planning Across Gulf of Kutch, Gujarat 82K. Vinod Kumar, A. Bhattacharya, P.R. Reddy and P.K. Deb

RS-2 Remote Sensing Applications in Geomorphology for Water Resources 84B.S. Chaudhary

RS-3 Comparative Study of Aerial and Satellite Thermal IR Images for Mine Fire Mapping 87C.S.S. Reddy, Manoj Dangwal and A. Bhattacharya

RS-4 Role of Remote Sensing and GIS in Watershed Management - A Case Study of Kallar Basin,V.O. Chidambaranar District, Tamil Nadu 90S.K. Subramanian, G. Hanumantha Rao andS. V.C. Kameswara Rao

RS-5 The Effect of Spatial Resolution and Internal Spectral Variability on Vegetation Cover TypeClassification Accuracies 91./V. Uday Bhaskar and B.J. Devereux

RS-6 ERS-1 SAR Data in Limestone Exploration in Arid Regions 96Ashok Kumar Jos hi, Y.V.N. Krishna Murthy and K. Radhakrishnan

RS-7 Development of Expert System for Classification of Soils Using Remote Sensing Techniques 99B.R.M. Rao, N.K. Anasuya, L. Venkataratnam, T. Karunakar, H. Sukanya, P. SubhadraandJairam Hebbar

RS-8 Interpretation of Airborne Geophysical and Remotely Sensed Data for Mapping the SolidGeology in High Grade Metamorphic Terrains: A Case Study in Northern Orissa, India 101W.A. Crowe, P.M. teeming, P.N. Chakravartula, C.R. Nash and I. Cook

RS-9 Artificial Groundwater Recharge and Rainwater Conservation Through Integrated Studyof Resources Using Remote Sensing 105A. Perumal, G. Hanumantha Rao, S. V.C. Kameswara Rao, S.K. Subramanian,N. Uday Bhaskar, G.Ch. Chenniah, G. Behera and D.P. Rao

RS-10 Better Applications of Airborne Radiometrics 108R.J. Smith and V. Vorobyev

RS-11 A Review of Aeromagnetic Gradiometry and its Application to Diamond Exploration 111J.D.H. Sump ton, DR. Cowan, M. Baigent and S. Cowan

\RS-12 Hydrocarbon Prospects and Challenges of Poorly Explored North Bank of River

Brahmaputra in Parts of North-East India : An Integrated Approach 122S. Rath, S.K. Singh andS.C. Sarma

RS-13 Non-Linear Filter for Speckle Reduction of Synthetic Aperture Radar (SAR) Data 127

K. V.S. Badarinath, M. Gopi Krishna and P. V.N. Rao

SURFACE GEOPHYSICS (Oil Exploration)

Lead Paper

SG-C1 A Brief Review on Modern Seismic Industry 131

Kharak Singh

Extended Abstracts

SG-1 Hydrocarbon Prospect Evaluation in Khowai Kalyanpur Area, Tripura 135S.B. Bansal

SG-2 Seismic Attenuation as a Hydrocarbon Indicator - A Case Study 137Rahul Dasgupta and G.R. Saini

SG-3 Seismic Attenuation - Estimation and Use in Hydrocarbon Exploration 141Rahul Dasgupta

SG-4 Emerging Trends in Seismic Data Acquisition 144V. Vijaya Rao, B. Rajendra Prasad and P.R. Reddy

SG-5 Utility of 3D Seismic Data for Delineating Stratigraphic Trap - A Case Study 149S.K. Jain, J.D. Rao, O.P. Sinha and V. Rangaehari

SG-6 Implication of Knowledge of Subsurface Velocity on Seismic - A Case Study 152K.S. Sajwan, R.S. Nandi and A.B. Dehadrai

SG-7 Reservoir Delineation From 3D Seismic Amplitute Analysis Over an Oil and Gas Field inCauvery Basin, India 156N.C. Banik, S.K. Jain, J.D. Sarkar and Hasan Quidwai

SG-8 Experimental Comparison Between Single and Multi-Channel Telemetry Systems in Harsh andMountainous Areas 159Patrick Burger, Jean-Jacques Postel and Alberto Martinez

SG-9 Advantages of Radio Telemetry for 3D-Seismic Data Acquisition on Land 162Rene Graf

SG-10 3-DPrestack Time Migration of the Ravva 3-D Data Set 165Jim Montalbetti, Peter Whiting and Leigh Brooks

SG-11 A System Approach for Skip Management in Land 2D Seismic Surveys 168

G.S. Chaturvedi, S. Panigrahi and R.K. Khanna

SURFACE GEOPHYSICS (Minerals, Geological Mapping, Ground Water & Engineering Geophysics)

Lead Paper !

SG-C2 Geophysics in Mineral Exploration 173

T. Mohana Rao

Extended Abstracts

SG-12 Groundwater Exploration for Hard Coke Plant at Dhanbad 181P.K. Gupta and T.N. Singh

SG-13 Regional Heli-Borne Gravity Surveys Using a Suspended Automated Gravimeter 182HO. Seigeland T. McConnell

SG-14 Appraisal of Central Loop TEM Technique : A Case Study from Bijawar Basin, LalitpurDistrict, Uttar Pradesh, India 186B. Narasimha Rao, P. Ramakrishna, B,V.L Kumar and K.K. Dwivedy

SG-15 Direct Location of Massive Sulphides by Gravity Method - A Case Study in Aladahalli Area,Kamataka 187V. Bhaskara Rao

SG-16 Geophysical Exploration for Kimberlite Pipes - A Case Study from Maddur Area, MahbubnagarDistrict, Andhra PradeshN. Sreerama Murthy, R. Ananda Reddy, D. Livingston, V.L. Raju and T. Mohana Rao

SG-17 Application of Magnetic, IP and Resistivity Methods in Delineating a Folded Sulphidic Gold- Quartz Vein in Thick Soil Cover : A Case Study from Chitradurga Schist BeltC. Ramachandran, H. V. Rao, V. Ramamurthy, S.A. Khan andN.C. Murali

SG-18 Targeting Areas for Gold Exploration by Potential Field Surveys - A Case Study fromHutti-Maski Schist Belt, KarnatakaM. Appa Rao, R. Ananda Reddy, D. Chakravarthy and B.S.R. Murthy

SG-19 Potential Areas for Gold Mineralization from Airborne Total Count Maps in ChitradurgaDistrict: An Exploration Strategy for Gold.C. Ramachandran, H. V. Rao, V. Ramamurthy, S.A. Khan, N.C. Murali and T. Mohana Rao

SG-20 Geophysical Investigations for Manganese Ore in the Vizianagaram District of Andhra Pradesh- A Case StudyT. Mohana Rao, K. Surya Bhanu, A. Lakshamipatiraju and K. Sreedhar

SG-21 Geoelectric Signatures of Crustal Reactivation in Central India - A Magnetotelluric StudyS. V.S. Sarma, N. Nagarajan, M. Someswara Rao, T. Harinarayana, G. Virupakshi,D.N. Murthy, M. V.C. Sarma andK.R.B. Gupta

SG-22 Tectonic History Deduced from a Combined Study of Bouguer Gravity and Lineaments ofGondwana Basins in MaharashtraR.N. Padhi and T.S. Ramakrishna

SG-23 Structure and Seismotectonics of the Koyna Seismic Source Region Based on DSS andSeismo-Statistical StudiesP.R. Reddy, P. Prasada Rao, N. Madhava Rao and D. Sarkar

SG-24 Seismicity Associated with Kopili Lineament and Adjoining Regions of North Eastern IndiaN.K. Gogoi, P. Solomon Raju and C. V. Ramakrishna Rao

SG-25 An Integrated Crustal Model Along Nagaur-Jhalawar GeotransectD.C. Mishra, Bijendra Singh, V.M. Tiwari, S.B. Gupta, N. Kameswara Raoand M.B.S. Vyagreshwar Rao

SG-26 Direct Current Resistivity Traversing Across Singhbhum Shear Zone Near Ghatsila,Mosabani, Eastern IndiaK.K. Roy, L.K. Das, H. Das, K.K. Mukerjee, P.S. Routh, R. Chunduru, D.K. Saha,M.K. RaiandD.C. Naskar

SG-27 Gravity-Geologic Investigation of Buried Bedrock TopographyRevathi Nagarajan

SG-28 Electrical Delineation of Paleoslopes and Sedimentary Facies of a SubstratumK. Veeraswamy and U. Raval

SG-29 Geoelcetrical Resistivity Studies for the Evaluation of Ground Water Resources Potentialof Saptari DistrictNaba Raj Shrestha and Nir Shakya

SG-30 Hydrogeological Surveys in Drought Prone Bargarh District, Orissa Aided by Remote SensingStudies, Groundwater Exploration and Application of GIS of Decipher Groundwater Potentials 228S. Das, S.C. Behera, D.P. PatiandG. Prasad

SG-31 Joint Orientation Studies Using Electrical Resistivity Method at the Proposed KudankulamAtomic Power Plant Site, Tamil Nadu 230R.S. Wadhwa, M.S. Chaudhari andN. Ghosh

SG-32 Graphite in the Earth Crust and the Nature of Crustal Anomalies of Electrical Conductivity 235A.A. Zhamaletdinov

SG-33 Electrical Resistivity and Anisotropy of Rocks in the Kola Super Deep Hole 237A.A. Zhamaletdinov, L.D. Galitchanina and Yu.I.Kuznetsov

SG-34 Two approaches to the problem of the Deep Electrical Soundings on the Baltic Shield in theAudiomagnetotelluric Frequency Band 239A.A. Zhamaletdinov, M.I. Pertel, A.N. Shevtsov andA.D. Tokarev

SUBSURFACE GEOPHYSICS

Lead Paper

SSG-C1 Ultra Sonic Imagery Tools, its Principle Uses and Case Studies 241

R. Thiagarajan, S.B. Paul and T.G. Deshmukh

Extended Abstracts

SSG-1 Sensitivity Analysis of Water Saturation Equations Used for L-III CarbonateReservoir Evaluation 255K. Suryanarayana

SSG-2 Delineation of Coal Beds and Estimation of its Parameters from Well Log Data UsingSingular Value Decomposition (SVD) 259Raja Mukhopadfiyay and Bimalendu B. Bhattacharya

iSSG-3 Solutions to thfe Stratigraphic Paradoxes of Chintalpudi Sub-Basin from Electro Logs 263

K V. Rao, G. Uday Bhaskar, K.A.V. L. Prasad and G. D. V. Durga Prasad

SSG-4 Borehole Geophysical Logging for Assessment of in Situ Characteristics of Foundationat Erai Dam, Maharashtra 267R.K. Kamble andP.J. Desai

SSG-5 Stratigraphy and Facies Analysis from Electro Logs: An Example from ManuguruCoalfield, India 268G. Uday Bhaskar, K. V. Rao, KA. V.L. Prasad and G.D. V. Prasad

SSG-6 Objective Oriented Reprocessing of VSP Data - A Case Study 271A.K. Sarkar and L.K. Marwah

SSG-1 Processing of Walkaway VSP Data -An Optimised Approach 273D. Chatterjee, L.K. MarwahandA.G. Pramanik

SSG-8 Application of VSP for Drilling Overpressure Wells in Tripura 277Kharak Singh, A. Chaudhury and N. Bhattacharyya

SSG-9 Cross Hole Radiofrequency Electromagnetic Mapping in Various Geological Environments 279K. Prabhakar Rao, P.D. Sarafand K. Mallick

SSG-10 Identification of Lithologies from Log Data by Simulated Neural Networks 282

S. Chakrabarti, S. Hazra, M.K. Sharma and R. Mohan

MARINE GEOPHYSICS

Extended Abstracts

MG-1 Deep Water Exploration Efforts in Western Offshore-India 289

M.S.N. Murthy, S.S. Thakur, R.T. Arasu, V.S.R. Subrahmanyam,A.K. Srivastava and A. V.S. Murthy

MG-2 Underwater Seismic Reflection Survey for Coastal Thermal Power Station at Chhara,Saurashtra, Gujarat 290N. Ghosh, R.S. Wadhwa, M.S. Chaudhari, V. Chandrashekar andS. Bhowmick

MG-3 Record of the Cretaceous Magnetic Quiet Zone in the Distal Bengal Fan and its Significancein Understanding the Evolutionary History of the Northeastern Indian Ocean 292M.V. Ramana, V.Subrahmanyam, K.V.L.N.S. Sarma, Maria Desa, M.M.Malleswara Rao andC.Subrahmanyam

SIGNAL PROCESSING AND MODELLING

Lead Paper

SPM-C1 Signal Processing: A Bird's Eye Review 297P.S. Moharir

Extended Abstracts.i

SPM-1 Quality Sfismics and Ground Roll: A Case Study 305S.K. Chandola, V. Singh, R.K. Chaturvedi andP. Kumar

SPM-2 Fault Mapping Using Horizon Attribute Technique 309M.N. Bhatnagar and CM. Varadarajan

SPM-3 On the Correlation Phase in Dipmeter Data Processing 311T. V.S. Rao

SPM-4 Imaging Deep Crustal Seismic Reflection Data with Depth Migration 314Suhas Phadke, M.J.A. Burianyk and E.R. Kanasewich

SPM-5 The Effect of High Velocity Layers on Seismic Refraction Data: An Example fromMahanadi Basin, India 317H.C. Tewari

SPM-6 Criteria for 2D Seismic Survey Design 318G.C. Katiyar and B. V.S.S.R. Murthy

SPM-7 Travel Time Approximationi Anisotropic Layered Media 320V. Singh and Sanjay Kumar

SPM-8 Imaging of Deeper Reflectors in Bombay Offshore : A Processing Target 322Babanjee, M.S. Rawat, Abhay Sahai, D.P. Sinha and L.K. Marwah

SPM-9 Application of Linear Digital Filtering Algorithm for the Computation of ElectromagneticResponse of a Vertical Magnetic Dipole over Inhomogeneous Earth Models 326Nagendra P. Singh and T. Lai

SPM-10 Angular Spectrum for Detection of a Fault 329Prabhakar S. Naidu and M.P. Mathew

SPM-11 Spectral Analysis of Gravity Data over Gaussian Subsurface Relief 332L. Roy, R.K. Shaw andB.N.P. Agarwal

SPM-12 Interpretation of Self-Potential Anomalies by Nonlinear Inversion 334Shalivahan, Bimalendu B. Bhattacharya and Mrinal K. Sen

SPM-13 Inversion of Magnetotelluric Data by Very Fast Simulated Annealing 337Bimalendu B. Bhattacharya, Sobhan Pathak, Mrinal K. Sen andShalivahan

SPM-14 Velocity Structure in Parts of NE India 341Yogesh Gupta andR.K. Verma

SPM-15 Simulation of Electrical Potential and Wenner Resistivity Anomalies by Analogue FluidFlow Mapper 342R.K. Majumdar and A. Parui

SPM-16 Near Field/Transition Zone CSAMT Data Inversion 345S. Srinivas, Ramraj Mathur and I.B. Ramaprasada Rao

SPM-17 Approximate Inversion of Magnetotelluric Data 347Mohammad Israil

\SPM-18 The Correlatioi Between the Parameters of the Plate Model for Various TEM Systems 351

M. Pirttijarvi, S.K. Verma andS.E. Hjelt

SPM-19 Evaluation of Local and Global Optimization Methods in the Resolution of Fine StructuresEmploying Electrical and EM Data 354S.K. Verma and S.P. Sharma

SPM-20 Physical Modeling Results on Modified Pseudodepth Sections in Exploration of HighlyResistive Targets 357A. Apparao, G.S. Srinivas and V. Subrahmanya Sarma

SPM-21 Modelling of Water Table Fluctuation in Response to Transient Random Recharge 359S.N. Rai and Kirti Srivastava

SPM-22 2-D Finite Difference Modelling of Laterally Inhomogeneous Mineralised TargetOre Conductors in Afmag Range 360P.D. Saraf, K.P. Rao andK. Mallick

SPM-23 Distortion ofMT Data Due to Coast Effect 362Umesh K. Singh and Ramesh P. Singh

SPM-24 Shear Wave Velocity Structure of China Region from Rayleigh Wave Dispersion 364P. K. S. Chauhan and V. N. Singh

COMPUTING AND MATHEMATICAL GEOPHYSICS

Extended Abstracts

CMG-1 Multifractals, Strange Attractors, Epicentral Patterns 367Pradosh K Roy, Ajay K Chauhan, Sri Niwas, Kailash N Khattri

CMG-2 Application of Fractal Dimension in Aeromagnetic Data Interpellation 370M. Suryanarayana and C. V. K. V. P. Jagannadha Rao

CMG-3 Finite Element Simulations of 2-D Intraplate Stress Distributions Associated with Topographyand Crustal Density Inhomogeneities Beneath the Kavali-Parnapalle DSS Profile 374Prantik Mandal and R.N. Singh

CMG-4 The Effect of Lateral Heat Transport on the Relationship Between Surface Heat Flow andHeat Generation 377D. V. Ramana and R.N. Singh

CMG-5 A Parametric Analysis of EM Response of Elongated Covered Ore Deposits in MultifrequencyMeasurements 381D. Indira Nagubai and P. D. Saraf

CMG-6 Software Development for Seismic Sequence Attributes and their Usage in EstimatingPorosities 384J. V.S.S.N. Murty, B.S. Josyulu andA.G. Pramanik

CMG-7 Rotation Invariant Magnetotelluric Tensors 389K.K. Roy, A.K. Singh andS. Srivastava

ICMG-8 Gravimetric Determination of High Resolution Geoid for India 390

B. Nagarajan

CMG-9 Effect of Transition Layer on Electromagnetic Depth Sounding using Large Rectangular Loop 393K. Mallick, K Prabhakara Rao and P.D. Saraf

CMG-10 Parameterization of an Artesian Aquifer System in Neyveli Basin, Tamilnadu 395V.S. Singh, M. Thangarajan and C.P. Gupta

EMERGING TECHNIQUES AND TECHNOLOGY

Extended Abstracts

ETT-1 PC Based Universal Chart Recorder for Geophysical Surveys 397K. Kalyanaraman, M. Surender Reddy, K. Venkateswar Rao and G.G.K. Murthy

INTEGRATION OF SCIENCES IN EXPLORATION FOR EARTH RESOURCES

Extended Abstracts

IES-1 Comparative Analysis of Geoelectric and Lithologic Data in a Typical Khondalitic Terrain 403B. Venkateshwara Rao and D. Ramadurgaiah

IES-2 An Integrated Approach for the Delineation of Buried Paleochannel at Indira Sagar (Gosikhurd)Project, Maharashtra State, India. 406J.M.Shirke, B.S.Shrotri, G.A.Panvalkar, M.Tripura and P. V.Akut

ENVIRONMENTAL STUDIES

Extended Abstracts

ES-1 Environment of Dhanbad Area - A Preliminary Study 407K.K.K. Singh, R.K.S. Chauhan And B.B. Dhar

ES-2 Role of Geophysics in Town Planning - A Case Study of Rangapahar Area, Dimapur Town,Kohima District, Nagaland 410Dinesh Gupta, Sagina Ram, B.C.Saikia and A.K.Mukherjee

ES-3 Environmental Change Detection in Indira Gandhi Canal Command Area Using RemoteSensing Data 413R.S. Dwivedi and K. Sreenivas

ES-4 Delineation of Groundwater Contamination at Two Industrial Sites in Visakhapatnam UsingGeoelectrical Surveys and Factor Analysis 414C.Subbarao, N. V. Subbarao, J. Purnima Priyadarshini and Anila Vijay Nair

ES-5 Identification of Zones of Corrosive Groundwater Using Resistivity Method 415K.K. Sharma and S. Jayashree

LATE ARRIVALS jt

PS-4 An Overview of Coalbed Methane Exploration and Exploitation 417D. Majumder

PS-5 Harvesting of Global Water Resources for the Growing Needs of the 21st Century 427B. Sundara Rama Rao

SG-35 Composite Gravity Maps of Krishna-Godavari and Cauvery Basins 429B. K. Jain

SPM-25 Utilization of Seismic Modeling and Geostatistics for Prediction of Tight Zone in theNorphlet Formation 433Rajendra K. Shrestha, WenlongXu, Fred Aminzadeh and Mrinal K. Sengupta

SG-36 Enhancement of Seismic Expression of Rift-Fill and Younger Sediments in an Area Southwestof Kaikalur on Kaza Horst of Krishna Godavari Basin 439Rajendra Kumar, K.S.R.J. Rao and A. Sampat

EEE-5 Recent Trends in Production Systems for Marginal and Deepwater Field Developments 441Sanjay Reddy, Chuck McCabe and Mike Cunningham

MG-4 New High Resolution Satellite Derived Gravity for South East Asia 444Christopher M. Green, Simon J. Campbell and J. Derek Fairhead

SG-37 Estimation of Aquifer Parameters from Geoelectrical Soundings over Kalahandi District, Orissa 450Basant Kumar, Bimalendu B. Bhattacharya, S.K. Adhikari andS. Das