CONTENTS OF JANUARY 2013, Vol.XXXIV   No.1

SPECIAL ISSUE :
AIRBORNE GEOPHYSICS
Guest Editors : Colin V. Reeves and A.K. Chaturvedi

 

ZTEM and VTEM Airborne EM Survey Results over the Mayville Cu-Ni-PGM Intrusive System, Southern Manitoba.

Marta Orta, Jean M. Legault, Shengkai Zhao, Carlos Izarra, Timothy Eadie and Carey Galeschuk.

 

FALCON® Airborne Gravity Gradiometry Provides a Smarter Exploration Tool for Unconventional and Conventional Hydrocarbons: Case Study from the Fitzroy Trough, Onshore Canning Basin.

David Moore, Priyanka Roy Chowdhury and Tony Rudge.

 

Analytical Results of the Interpretation of Aero-magnetic Data of the Kanker-Dhamtari Area, Chattisgarh Basin, Bastar Craton, Central India.

N. Balakrishna Rao, Rajendra Sharma, Vinod Kumar, R. Ananda Reddy, Ch. Ravi Kumar, Rajesh Kumar and Ramachandrappa.

 

Aeromagnetic and Gamma-ray Spectrometric Data Interpretation for Uranium Exploration - South Eastern Margin of the Chattisgarh Basin, India.

A. Markandeyulu, Abhinav Kumar, M. Sridhar, M. Seetaramayya, A.K. Chaturvedi and P. S. Parihar.

 

Aerogeophysical and Ground Followup Studies for Structural Elucidation of the Aladahalli-Nuggihalli Schist Belts and Adjoining Areas, Hassan District, Karnataka and Implications for Future Prospects.

S. Srinivas, Ch. Ravi Kumar, Rajesh Kumar, B.V. Srirama and Rajendra Sharma.

 

Proxy Heat Flux and Magnetisation Model from Satellite Magnetic Data.

Mita Rajaram, S.P. Anand and K. H.Singh.

 

Mineral Targeting Through Integration of Geological, Aero Geophysical and Remote Sensing Data -A Case Study.

K.V. Krishnamurthy, Rajendra Sharma, Aneesh Kumar, Sana Sabir, Jamal Anwar, Sumit K Ahirwar, A. K. Srivastava, H. C. Gouda and Rajesh Kumar.

 

Report on National Airborne Geophysical Survey Workshop.

Colin V. Reeves

 

Report on Geophysical Education and Employment: Opportunities and Challenges.

P. Rajendra Prasad

 

A Report on the 34th Annual Convention Seminar and Exhibition on Exploration Geophysics during 5 - 7 October, 2012 at Hyderabad.

A.K. Chaturvedi and Y. Sreedhar Murthy.

 

HOMAGE : S. N. Kak.

 

 

ZTEM and VTEM Airborne EM Survey Results over the Mayville Cu-Ni-PGM Intrusive System, Southern Manitoba.

 

Marta Orta*, Jean M. Legault*, Shengkai Zhao*, Carlos Izarra*, Timothy Eadie*, and Carey Galeschuk**
*Geotech, 245 Industrial Parkway North, Aurora, Ontario, L4G 4C4, Canada **Mustang Minerals Corp., 65 Queen Street West, Suite 530, Toronto, Ontario M5H 2M5, CAN

 

 Abstract

   Heliborne VTEM and ZTEM surveys were flown over the Mayville Property, in south-eastern Manitoba, that hosts the gabbroic Mayville Intrusive and related M2 magmatic copper-nickel deposit. The Mayville deposit has been well explored but not yet been put into production, making it ideal as a geophysical case-study. The VTEM surveys have been the primary targeting tool for exploration at Mayville and, as expected, the results correlate well with the shallower portions of the M2 orebody. The ZTEM results also correlate well with known geology and provide indications of deeper vertical extent to the M2 orebody. In addition, a shallow ZTEM conductive body and related magnetic feature both coincide with a PGM occurrence situated 1 km to the southeast of the Mayville Intrusion. Comparisons between these data sets and the geology are showcased using 1D-2D-3D inversion modeling.

 

 

 

 

FALCON® Airborne Gravity Gradiometry Provides a Smarter Exploration Tool for Unconventional and Conventional Hydrocarbons: Case Study from the Fitzroy Trough, Onshore Canning Basin

 

David Moore*, Priyanka Roy Chowdhury*, Tony Rudge**
*Fugro Airborne Surveys Pty Ltd., Perth, WA, Australia
**Buru Energy Limited, Perth, WA, Australia

 


Abstract

   A FALCON® airborne gravity gradiometer (AGG) survey was flown over the Yakka Munga area of the Fitzroy Trough, onshore Canning Basin in December 2011. The 3336.8 line km survey centred on the Ungani oil field over a survey area of approximately 1400 sq. km. Regional gravity and 2D seismic data, along with the Ungani-1 and 2 wells in the area and wells Yulleroo-2 and Frome Rocks-1 in the vicinity were utilised in an integrated interpretation of the AGG data. Integrated geological and geophysical interpretation, including depth to basement, 2D modelling and 3D inversion, revealed the particular usefulness of AGG data for mapping intra-sedimentary and basement faults, basement highs, sedimentary depocentres, salt diapirs and volcanic intrusions. Additionally, prospective structural and stratigraphic plays in the area are highlighted.

 

   Conventional vertical gravity (gD) from the AGG survey better defined the longer wavelength features, typically the major tectonic elements such as basin bounding faults, and relative sediment thickness. Comparisons with the regional gravity data showed that the gD reproduced all the information available in regional gravity. At shorter wavelengths, the vertical gravity gradient (GDD) of the AGG data has much higher sensitivity than the regional gravity dataset. The GDD is more sensitive to subtle density contrasts and has greater spatial resolution than gD, therefore, it provides more detail than gD by imaging smaller and shallower sources. The increase in resolution allows for contacts to be mapped more accurately, and significantly increases the confidence of the 2D seismic interpretation. Enormous potential exists for conventional and unconventional oil and gas in the Fitzroy Trough, a proven petroleum province. The AGG survey flown includes the simultaneous acquisition of high resolution gravity gradiometer, magnetic and DTM data from one airborne platform. The data acquired is used to generate a high resolution geological model over the study area which is then used as input in the 3D inversion. Following the calibration of the structural information present in the geologic model, the output density model and basement surface can be used to optimize exploration programs and plan future seismic acquisition through improved knowledge of the subsurface structural, density and depth distribution. A number of plays identified by the associated structural and stratigraphic interpretation may provide leads for shale gas, tight gas and conventional oil & gas exploration.

 

 

Key words: Onshore Canning Basin, Fitzroy Trough, FALCON® Airborne Gravity Gradiometry, Structural Interpretation, 2D Models, 3D Inversion, Depth to Magnetic Basement, Oil & Gas Exploration, Shale Gas, Tight Gas.

 

 

 

Analytical Results of the Interpretation of Aero-Magnetic Data of the Kanker-Dhamtari Area, Chhattisgarh Basin, Bastar Craton, Central India.

 

N. Balakrishna Rao, Rajendra Sharma, Vinod Kumar, R. Ananda Reddy, Ch. Ravi Kumar, Rajesh Kumar and Ramachandrappa
Remote Sensing and Aerial Surveys, Geological Survey of India, Bangalore

 

Abstract

 

   The analyses and the interpretation results of multi-sensor aero-geophysical data of the Kanker-Dhamtari area of the, Chhattisgarh basin, Bastar Craton are presented. Multi-sensor airborne geophysical data was acquired by the Geological Survey of India, employing magnetic and spectrometric sensors, in parts of Kanker, Durg, Bastar, Raipur and Rajnandgaon districts of Chhattisgarh and the Koraput district of Orissa. The objective of this work was to understand the sub-surface geology and its, structural aspects and to identify potential areas for mineralisation.

 

   The area falls in the southern part of the Chhattisgarh basin, within the Precambrian Bastar Craton. The study area exposes rocks of the Archaean Bengpal, Bailadila and Dongargarh Groups in the southern part that are overlain in the north and south by the rocks of the Neoproterozoic Chhattisgarh Supergroup. The Bengpal Group of rocks, comprising upper amphibolite facies, BIF, meta-pelite and amphibolites, occur as small mappable units within migmatite and granite gneiss.

 

   Prominent E-W sub-surface magnetic features, with en-echelon shifts, not reflected in the geological map and with sub-horizontal dips as reflected from 2D modelling, are inferred to represent shears. The radially averaged power spectrum of the magnetic data brought out three magnetic interfaces at depths of 964 m, 1,156m and 19,170 m below the observation plane which was 950 m above MSL (150 m for ground clearance) and matched layer filter maps reflect the anomaly pattern at different depths obtained from the power spectrum which helped in understanding the sub-surface lithology. Besides, 3D-modelling of the anomalies falling close to the intersection of different anomaly trends and thought to be potential for mineralisation, identified from a reduced-to-pole (RTP) map, was carried out to obtain parameters like, depth to the top of body, depth to the bottom of the body and susceptibility contrast with respect to the host rock. 3D modelling revealed that some of the causative sources emplaced in the second layer are found to be extending to the third layer with depths ranging up to 7 km.

 

   The quantitative interpretation of the magnetic data using these different methods yielded good correlation and facilitated understanding of the nature of various causative sources. The Euler-3D de-convolution method, adopting constraints judiciously, helped in obtaining the depth estimates which are in good agreement with 2D and 3D modelling results.


 

 

Aeromagnetic and Gamma-ray Spectrometric Data Interpretation for Uranium Exploration - South Eastern Margin of the Chattisgarh Basin, India.

 

A. Markandeyulu, Abhinav Kumar, M.Sridhar, M.Seetaramayya A.K.Chaturvedi and P.S.Parihar
Airborne Survey and Remote Sensing Group, Atomic Minerals Directorate for Exploration and Research, AMD Complex, Begumpet, Hyderabad – 500 016

 

Abstract

 

   Airborne surveys were conducted along the south-eastern margin of the Chhattisgarh Basin - Singhora Basin and Sonakhan greenstone belt by the Atomic Minerals Directorate for Exploration and Research in 2000 with E-W flight lines covering 19800 linekm. Preliminary processed aeromagnetic data were corrected for IGRF, heading and lag and levelled using tie line data. Based on the amplitude, frequency and textural characteristics of enhanced magnetic images, litho-structural information of the area was deciphered. Semi-quantitative interpretation of aeromagnetic data employing Euler’s technique facilitated identification of source body locations along with depth estimates. Airborne Gamma Ray Spectrometric (AGRS) data were processed for altitude attenuation, radon interference and stripping corrections. The radiometric ternary image of the processed data shows good correlation with surface geology of the area. Radiometric anomalies were extracted from the derived concentrations based on mean and standard deviation of Uranium, U/Th and U2/Th data sets. Finally, integrated Geographical Information System (GIS) analysis of inferred faults and lineaments from aeromagnetic data and uranium anomalies mapped from AGRS data were used for extracting zones favourable for uranium mineralisation. Qualitative and quantitative analysis of aeromagnetic and AGRS data and integration of the results on a GIS platform thus helped in identifying target areas for further exploration.


 

 

Aerogeophysical and Ground Followup Studies for Structural Elucidation of the Aladahalli - Nuggihalli Schist Belts and Adjoining Areas, Hassan District, Karnataka and Implications for Future Prospects

 

S. Srinivas, Ch. Ravi Kumar, Rajesh Kumar, B.V. Srirama and Rajendra Sharma
Geological Survey of India, Remote Sensing & Airborne Surveys, Bangalore-560 078.

Abstract

 

   Airborne geophysical data comprising magnetic and electromagnetic data was procured by the GSI Twin Otter Airborne Survey System in the Aladahalli-Nuggihalli area, Hassan district, Karnataka. The magnetic (total field) contour map brought to a plane of 1015 m above mean sea level clearly demarcated the NW-SE trending Aladahalli and Nuggihalli Schist Belts in the centre of the area in the form of a gradient. The northern part of the Archaean Holenarsipur Schist Belt is seen as a prominent magnetic feature in the southwest corner of the area. Two-dimensional modeling of five selected profiles over the Aladahalli Schist Belt indicates a depth of 500 m to the top of body and a width of 1500 m. The magnetic picture also reveals a few isolated plugtype of bodies viz., D1, D2, D3, D4, D5, D6 and D7 (Figure.2). Three dimensional modeling of these bodies indicates an average depth of 700 m and 2600 m to the top and bottom of the bodies of Nuggihalli Schist Belt (D1, D2, D3 and D4) respectively. Anomaly D7 reflects the body magnetised in a different direction, which is confirmed by NRM studies of oriented samples. The airborneectromagnetic (AEM) conductivity map reflects a cluster of anomalies to the north of Shantigrama may be represent a fracture zone associated with the basement.

 

   Ground geophysical surveys employing magnetic (TF) and electromagnetic methods conducted over these airborne geophysical anomalies have confirmed these features and warrants detailed geophysical and geological investigation over anomalies D1 to D7 and the AEM anomaly north of Shanthigrama.


 

 

Proxy Heat Flux and Magnetisation Model from Satellite Magnetic Data

 

Mita Rajaram*, S.P. Anand* and K. H.Singh**
*Indian Institute of Geomagnetism, Navi Mumbai, India,
E-mail: mita@iigs.iigm.res.in   anand@iigs.iigm.res.in

**Department of Earth Sciences, Indian Institute of Technology, Mumbai,
E-mail: kumar.h.singh@iitb.ac.in  

Abstract

 

   From the Curie isotherm depths derived from the aeromagnetic data, the geothermal heat flux was calculated utilizing the 1D heat conduction, steady state thermal model for the continental crust.

 

   Available values of the surface heat-production and thermal conductivity for the various tectonic blocks of India are incorporated for computing the heat flux. The calculated heat flux for several areas matches reasonably well with the surface heat flow measurements. As the aeromagnetic data coverage over India is limited, the heat flux for the Indian region is calculated using magnetic crustal thickness derived from MF5 lithospheric model of CHAMP satellite data utilizing an iterative forward modelling approach assuming a constant susceptibility contrast for the ocean and continents. Higher heat flux are observed over the mobile belts and rift zones while lower heat flux are observed over the cratons. Further, a Vertical Integrated Susceptibility (VIS) model incorporating both Curie depths from the aeromagnetic data together with realistic susceptibility values is used to better reproduce the observed satellite data. With the upcoming multi satellite high-resolution SWARM data the lithospheric models would be superior; and these maps could be effectively used to reconstruct the thermal regime of the continents.


 

 

Mineral Targeting Through Integration of Geological, Aero Geophysical and Remote Sensing Data - A Case Study.

 

K.V. Krishnamurthy, Rajendra Sharma, Aneesh Kumar, Sana Sabir, Jamal Anwar, Sumit K Ahirwar, A. K. Srivastava, H. C. Gouda and Rajesh Kumar.
RSAS, Geological Survey of India, Vasudha Bhawan, K.S.Lay Out, Bangalore-560078.

Abstract

 

   Application of the remote sensing technique helps in delineating various geological features such as lineaments, faults, fractures, shears and dykes that have great bearing in locating mineralised zones. Aero-magnetic data provide an insight into the subsurface geology and the data can be used effectively to compliment the surface geology. As a case study, a part of the Ramagiri-Penakacherla schist belt covering an area of 1296 km² in Andhra Pradesh (Fig. 1) was taken up. IRS-1D LISS III satellite images acquired from NRSA and aerogeophysical data acquired by the Twin Otter Aircraft of Geological Survey of India were used in integrated studies. The data were interpreted and integrated with the existing geological data using GIS platform and the interpreted studies were validated through limited field checks. A total of 11 target blocks were demarcated based on this interpretation for further detailed study.


 

 

REPORT ON
NATIONAL AIRBORNE GEOPHYSICAL SURVEY WORKSHOP

 

 

   On the occasion of the Association of Exploration Geophysicists 34th Annual Convention and Seminar on Exploration Geophysics in Hyderabad, October 5-7, 2012, the opportunity was taken to hold a workshop on the proposed National Airborne Geophysical Survey Programme in India. The AEG has a long history of supporting airborne geophysics in India and I was pleased, as a regular contributor to these discussions over the past almost 30 years, to be invited to convene the workshop. The proceedings were attended by about 50 delegates and the entire event was recorded electronically. This letter serves as a summary report of these deliberations which may be considered for implementation.

  1. The workshop unanimously expressed its strong support for the initiative of a national airborne survey programme and asked me to urge you to make every effort to ensure that the work proceeds without any unnecessary delay. It was pointed out by several speakers that such basic regional data coverage will go a long way in promoting India’s self-sufficiency in mineral resources in the longer term.
  2.  

  3. While the central role of administering the (foreign) contractors should fall to the Geological Survey of India (GSI), consideration should be given to the formation of a trans-organisational (executive?) team for this project that would help to reduce the compartmentalization that presently exists between the several responsible geoscience agencies in India. This would assist in the wider ‘ownership’ of the resulting survey data and engender a new spirit of cooperation between organizations working on India’s geology and resource exploration at governmental level. Individuals in these organizations, especially the younger members, can expect to spend their careers following-up this new initiative as the ‘road map’ to India’s geology and resources is progressively unveiled and they should be encouraged to do this in the spirit of a true national team.
  4.  

  5. Countries that have scored most highly in terms of success in mineral exploration investment worldwide have made certain that their national geophysical data sets are easily accessible to all potential users. This means making the results readily accessible (these days preferably via internet) at little or no cost to the user and with no discouraging delay. Realising the full value of this far-sighted investment in airborne survey requires that a maximum of scientific intellect is brought to bear on the basic data to extract, through interpretation, its value in terms of geology and resource potential, not forgetting its value in groundwater and environmental issues.

 

   We emphasize once again the importance that the participants attached to the timely execution of this survey effort and they join me in assuring the Convention of any further advice or assistance we may be able to afford in realising this far-sighted goal of a complete national geophysical reconnaissance to internationally recognized, modern specifications within the shortest possible time.

 

Colin V. Reeves
MA Msc PhD
Professor Emeritus, Exploration Geophysics
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REPORT ON
GEOPHYSICAL EDUCATION AND EMPLOYMENT : OPPORTUNITIES AND CHALLENGES

 

   Prof. P. Rajendra Prasad, Sir Arthur Cotton Geospatial Chair Professor, Department of Geophysics, Andhra University has given an overview on the geophysical education challenges and opportunities in the national perspective. He also highlighted the need for more systematic surveys in water, mineral and hydrocarbon sectors along with the need to establish a national repository of information on national natural resources in the form of digital maps.

 

   Sri D.N. Avasthi, formerly with ONGC, has spelt out the need to inculcate interest on earth sciences among the school children using ITC approach.

 

   Dr. Dinesh Gupta, Deputy Director General, Geological Survey of India has provided the details of the syllabus and structure of UPSC examination to recruit geo scientists. It is mentioned that UPSC would be giving an equal opportunity for mathematics, physics and geophysics, graduates for these positions. It is also mentioned that hereafter there will be assured recruitment of geophysicists in GSI through this examination.

 

   Dr. A.K. Chaturvedhi, AMD, Hyderabad has mentioned that the academic and professional career of geophysicists in this country should be seen beyond UPSC examination and there is an urgent need to train more geophysicists/geoscientists to cope up with the present and future needs of the country in the field of natural resources exploration and management. He also mentioned that there is a need for continuous evaluation of the employees in terms of their contributions.

 

   Colin Reeves, from the Netherlands has suggested that information channels may be built in as a part of the TV network in the country and the subject modules on earth sciences may be broadcasted which will certainly enthuse school children. He also foresees a greater role for women in earth science industry in India.

 

   Dr. Nagaraj, Ex-IBM employee has mentioned that there is a scope for good amount of recruitment of Geophysicists by IBM, IARA and other organizations. He also mentioned that the geophysicists should look for a better visibility by actively participating in organizations like Institute of Engineers etc.

 

   Prof. Y. Sreedhar Murthy while appreciating the efforts made by the geophysical colleagues to initiate the UPSC examination for a regular recruitment, has mentioned that the syllabus should be circulated to all the universities and briefed booklets encompassing the subject content related to the syllabus may be published by AEG which will provide guidance to students as well as paper setters. He also mentioned that there is an immediate need to inculcate better interest in geophysics among the student community.

 

   Prof. Murali, formerly with Osmania University has indicated that one year apprenticeship may be provided by different employing agencies to provide confidence among the students as well as to equip themselves with hands on experience that can lead to better employment.

 

   Dr. Indrajith Patra from AMD suggested that a booklet may be published highlighting the career opportunities for geophysics students in this country.

 

   Dr. Stephen Reford, Canada has suggested that most of the modules that can create enthusiasm among the students are already developed and available with different international agencies and efforts can be made to utilize the same.

 

Recommendations

Keeping in view the discussions and the suggestions made by the members of AEG, the following recommendations have been made:

  1. The AEG may take up the task of impressing the government agencies to take up employment on annual basis, irrespective of number of positions available, which will built up not only confidence among the youngsters but also facilitate to attract good talent for the positions.
  2.  

  3. The AEG may also publish booklets which provide reading material covering the syllabus being adopted by UPSC for the position of geophysicists in the country. It is felt that this will become a guiding document both for the job aspirants as well as the paper setters.
  4.  

  5. It is recommended that a repository of geophysical data for the country may be available in the form of digital data to the end user communities.
  6.  

  7. It is suggested that earth sciences may be introduced at school level and modules on various aspects of earth sciences developed by international and national agencies which may be adopted to suit the Indian conditions and efforts may be made to broadcast them through TV information channels.

 

P. Rajendra Prasad
Professor of Geophysics
Andhra University, Visakhapatnam
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REPORT ON
34th ANNUAL CONVENTION, SEMINAR AND EXHIBITION ON EXPLORATION GEOPHYSICS

5-7 October, 2012, Hyderabad, India
A. K.Chaturvedi and Y. Sreedhar Murthy
Association of Exploration Geophysicists

 

   The 34th Annual Convention, Seminar and Exhibition on Exploration Geophysics organized by the Association of Exploration Geophysics (AEG) with the Special Theme being “ Geophysical Exploration for Energy Security and Societal Development” was held during 5-7, October, 2012 at Marigold Hotel Green Park, Hyderabad , India. The seminar was well attended by a large number of delegates including overseas delegates representing various government, public and private institutions dealing with Earth Sciences. The seminar was sponsored by a good number of national and international institutions.

 

   As part of the annual convention, seminar and exhibition, a workshop on “National Airborne Geophysical Survey “ was organized on the forenoon of 5th October, 2012 with Prof. Emeritus Colin Reeves of Netherlands as the Convener of the workshop. The proceedings of the workshop was attended by about 50 delegates and entire event recorded electronically. The workshop unanimously expressed its strong support for the initiative of a national airborne survey programme and countries who have been successful in mineral exploration worldwide have assured the members of full support and easy accessibility of their national geophysical data sets. A detailed report on the workshop proceedings is part of this issue of Journal of Geophysics.

 

   After workshop, Chief Guest of the Convention, Seminar and Exhibition Shri. A.Sundaramoorthy, Director General, Geological Survey of India, Kolkata declared open the exhibition, annual convention and seminar. Before declaring open the Convention, the Chief Guest with other dignitaries performed the lighting of the lamp. He was accompanied by Shri Ramendra Gupta, President of AEG, Prof. Y. Sreedhar Murthy, Secretary, AEG, Shri. D.N. Avasthi, former member of ONGC, Dr. Srikumar Banerjee, Homi Bhabha Chair Professor of BARC and former Secretary and Chairman of the Atomic Energy Commission of India, Prof. Colin Reeves and Shri. A.K.Chaturvedi, Seminar Convenor. Shri. Ramendra Gupta welcomed the dignitaries seated on the dias as well as all the delegates to this Convention and Seminar. He expressed his utmost happiness for sharing the dias with an eminent personality in Dr. Srikumar Banerjee who consented and specially came to deliver the prestigious Dr. Hari Narain Memorial lecture.

 

   Prof. Sreedhar Murthy, Secretary, AEG in his usual style welcomed all the dignitaries and went on to explain the details of activities of AEG. He gave an insight of the membership of AEG which had a humble beginning with 30 members in 1974 and today we are proud to inform the gathering that the membership has risen to 1450. He went on to express his gratitude to Sri Ramendra Gupta to have stood by AEG during tough times in the past. He also reminded the members that the present AEG was formerly known as Students Geophysical Society of Exploration Geophysics with pioneers like Late M.B,.Ramachandra Rao, Dr. Hari Narain and Dr. Negi donning various posts of AEG and have worked hard for its existence.

 

   In his inaugural address, Chief Guest Shri. A.Sunderamoorthy profusely thanked the organizers for organizing such a wonderful event and recalled the association of many members of the Geological Survey of India who had taken up responsible posts as office bearers of AEG. During his address, Shri. Sunderamoorthy went on to place on record the constitution of a National Geo-hazard Institution in collaboration with the Ministry of Mines and the same is in the final stage. He commented the efforts being put by Geological Survey of India in Heliborne EM surveys to explore for deeper deposits besides initiating a number of programmes successful in Marine Geophysics all over the country. He expressed the desire that this convention and seminar could be an eye opener for various organizations / institutions to come forward and take exploration geophysics far ahead in years to come.

 

   Shri.D.N.Avasthi while narrating the Life and Achievement of Late Dr. Hari Narain, felt deeply honoured to spell the details of such an eminent personality. Dr. Hari Narain according to him, was a die hard optimist with a strong determination and will power. He was instrumental in the laying of the foundation stone by late Prime Minister Smt. Indira Gandhi and building the present National Geophysical Research Institute (NGRI). Dr. Hari Narain accompanied late Pandit Jawaharlal Nehru, then Prime Minister of India and Late Shri. K.D.Malaviya to all the ONGC laboratories. He has been a recipient of many national and international awards including the prestigious National Mineral Award of Excellence for 2001. Late Dr. Hari Narain was a visionary institutional member.

 

   Dr. Srikumar Banerjee delivered prestigious Dr. Hari Narain Memorial Lecture. Dr. Banerjee, Graduate from IIT, Kharagpur, recipient of many awards including the.

 

   Padmashri. He is also a recipient of Shanthi Swaroop Award and INS award besides ACTA Metallurgical Award. He retired as Chairman, Atomic Energy Commission and Secretary to Government of India.

 

   Dr. Banerjee in his hour long lecture discussed various types of energy resources available and emphasized that time has now come for all to feel the need of an alternative resource in the form of nuclear energy. The energy resource generation is likely to reach saturation sometime around 2050 and hence we have to look for an alternative viability. He also touched on the aspects of Global Warming, Climate Change, Environmental impact and advent of Solar energy besides solar thermal energy. He also spoke on the FBTR and prototype FBR at length. He applauded the efforts put in by AMD and UCIL in generating more uranium reserves in the country with the help of Heliborne EM surveys and generation of conductivity maps which serve as path finder to look for more uranium anomalies. Special mention was made of Ukinal-Gogi-Madnal sector of Bhima Basin and also parts of Rajasthan & Haryana.

 

   Smt. Saroj Hari Narain was present all through the inaugural session and was part of audience when AEG applauded efforts of Dr. Hari Narain in Growth of Geophysics in India .

 

   As many as 28 scientific and technical papers were presented on 6th and 7th October by delegates from different National and International institutions and all the papers were well received. Presentations covered different topics including airborne and ground geophysical investigations in search for mineral exploration as well as uranium exploration, field of Geo-tectonics and Data processing methodology with advanced technological inputs so as to serve the scientific community more effectively and in solving various complicated geological problems.

 

   On 7th October, 2012 a workshop was conducted on “Geophysical Education and Employment : Opportunities and Challenges” with Prof. P. Rajendra Prasad as its Convenor. He highlighted the need to carry out more systematic and extensive surveys in water, mineral and hydrocarbon sectors. Dr. Dinesh Gupta of the Geological Survey of India briefed on the practices adopted by GSI for recruitment and career growth of Geophysicists in GSI . Shri. A. K. Chaturvedi cautioned different organizations to take note of the mindset of the present younger generation who, according to him, are on the look out for financial benefits as well as recognition and challenges at work place. A large number of delegates took part in the discussions during the workshop, and a report is part of this issue of the Journal of Geophysics.

 

   GSI, AMD, IGIS, Geotech, Fugro, Fugro-Nexterra, Electrotech, Datacode and AEG participated in Exhibition which provided insights on different technologies, instrumentation, Software and utilization of Geophysics in Mineral Exploration and other geological problems. Exhibition was visited by delegates who appreciated the contents. The best Exhibitor Award for this year went to AMD and the same presented to AMD by Shri. P.S.Parihar , Director AMD and Chief Guest of Valedictory function. As no paper stood to the Merit and Expectation of the Jury, this year no paper could bag the prestigious P.K.Bhattacharya Gold Medal.

 

   In his valedictory address, Shri. P.S.Parihar, Director, AMD expressed his happiness to be part of this event as well as being associated with the activities of AEG. He in his address advised all the Earth Scientists to now look for sub-surface deposits / mineralization as the surfacial one’s are already proved and exploited. He mentioned that for it, role and importance of Exploration Geophysics is very important and crucial. He also felt that Data sharing by various organizations is a good attempt and would yield more benefits and there is a need to resolve it .

 

   The delegates and members expressed their utmost satisfaction and appreciations for the efforts put in by the organizers of AEG Seminar. AEG thanks all delegates and different organizations who made this a very successful event and for their support to AEG.

 

   Shri A. Markandeyulu, Organizing Secretary of the Seminar proposed a vote of thanks to one and all in making the event a grand success.

 

 

 

 

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