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- National Baseline Geoscience Data Generation Programmes 2020-2024 | UPSC
National Baseline Geoscience Data Generation Programmes 2020-2024 | UPSC
National Baseline Geoscience Data Generation Programmes (2020-2024)
WHY IN NEWS:
- GSI to adopt Magneto-Telluric Surveys and Deep Seismic Reflection Surveys, the sophisticated deep penetration geophysical techniques
- Availability of high quality baseline data to boost mineral exploration
SYLLABUS COVERED: GS 3:Mining
NATIONAL BASELINE GEOSCIENCE DATA GENERATION PROGRAMMES (2020-2024)
Theses are :
- National Geochemical Mapping (NGCM)
- National Geophysical Mapping (NGPM)
- National Aero Geophysical Mapping Program (NAGMP).
- GSI is also going to adopt sophisticated deep penetration geophysical techniques such as Magneto-Telluric Surveys and Deep Seismic Reflection Surveys (DSRS).
- The survey will help in defining the crustal architecture for deep seated mineral targeting.
NATIONAL GEOSCIENCE DATA REPOSITORY (NGDR)
- GSI has also initiated its flagship initiative of National Geoscience Data Repository (NGDR).
- All the state directorate of mines and geology, the academia , the CPSEs engaged in exploration and geoscientific pursuits, and private sector agencies will help in collation of data.
- It aims at integrating the collected data by GSI and the similar organizations to build a repository on the digital medium entailing multiple user access.
- It is planned that all the stakeholders from India and across the globe who are willing to participate in the current auction regime for allocation of mineral acreages will be able to use the NGDR.
- Further, the planned Baseline Geoscience Data Collection campaign would also lead to a huge database, which will be the primary inputs for future exploration programs.
- GSI is in consultation with BISAG-N, a national institute under Ministry of Information & Technology for development of NGDR.
NATIONAL GEOCHEMICAL MAPPING
- GSI envisages completion of NGCM programme by 2024 by extensive outsourcing and engaging private agencies.
- A total of 11.72 lakh sq.km has been completed by NGCM Programme till March 2020.
- This also involves coverage of 7.44 lakh sq.km of accessible part of Obvious Geological potential’ (OGP) (8.13 lakh sq.km).
- The NGCM work will generate distribution pattern of 62 elements (samples collected at 1km x 1km grid) for use in managing and developing natural resources.
- Also NGCM will work for relevant applications in environmental, agricultural, human health, other social concerns and to search for hidden mineral deposits.
National Baseline Geoscience Data Generation Programmes 2020-2024
NATIONAL GEOPHYSICAL MAPPING (NGPM)
- The Program have been systematically generating basic and derived maps of Bouguer (Gravity) Anomaly and IGRF corrected magnetic total field maps of the country.
- The program will be executed by conducting ground gravity and magnetic surveys in 1: 50,000 scale with an approximate observation density of one station in 2.5 sq. Km.
- The objective is to cover the entire country with preference to Obvious Geological Province (OGP) areas.
- The anomaly maps derived from the processed gravity and magnetic data provides all stakeholders a framework to design exploration strategies.
NATIONAL AERO GEOPHYSICAL MAPPING PROGRAM (NAGMP)
- Its objectives are to delineate concealed, deep seated structure/ litho-units capable of hosting mineralization, delineate extension of the existing mineralized zone and understating of shallow crustal architecture in the context of mineral occurrence.
- The first phase of work involved collection of data over selected areas (12 Blocks) of Obvious Geological Potential (OGP).
- As of now, data acquisition over first four blocks (Blocks 1 to 4) is completed which resulted in carving out of more than 100 potential mineral exploration areas.
- It is for the first time that the multi-sensor aero-geophysical surveys are being carried out .
- It will be done by adopting large regional scale survey parameters of 300 m traverse line spacing with aircraft flown at 80 m above ground level.
SIGNIFICANCE OF THESE PROGRAMMES
- The collation, assimilation and integration of the data generated from the above projects and further interpretation will lead to identification of more areas for mineral exploration in the country.
- This will ensure long-term viability and continuity of mining in the country taking India towards the cherished goal of ‘Atmanirbhar Bharat’.
- Out of the total mappable area of 3.146 million sq. km of the country, 3.119 million sq. km has been covered by Systematic Geological Mapping on 1:50,000 scale till December 2020.
- The data generated through this mapping activity has helped to build up the knowledge database for National Geo-scientific information.
- It will helps in boosting mineral exploration activities, and other earth science related socio-economic activities and programmes.
- During the last decade, GSI has prioritized baseline data generation over Obvious Geological Potential(OGP) areas, which accounts for approx. 0.813 million sq. km