The Geological Survey of India (GSI) got its 55th Director General on 1 November 2026 when Dinesh Vitthalrao Ganvir assumed charge. Ganvir, a geologist with more than 32 years in GSI, succeeds Varsha Ashok Aglawe. His appointment comes as India pushes to secure domestic supplies of critical and strategic minerals.
Who Is the New Director General Dinesh Vitthalrao Ganvir?
Dinesh Vitthalrao Ganvir joined the Geological Survey of India on 1 July 1994 after completing his masters degree in geology from Rashtrasant Tukadoji Maharaj Nagpur University (RTMNU), Nagpur. Over a career of more than 32 years, he has worked in GSI’s Central, North Eastern and Northern Regions and handled field, technical and administrative roles.
Just before his promotion, Ganvir served as Additional Director General and Head of Department, Central Region, Nagpur, with additional charge as National Mission Head-II. In this role he planned and monitored field programmes and nationwide mineral exploration.
His early field work includes thematic mapping in the Western Bastar Craton and gold and diamond exploration in the Sakoli Fold Belt of Maharashtra. He has also contributed to geoscientific studies linked to the conservation of two UNESCO World Heritage Sites, the Bhimbetka Rock Shelters and the Ellora Caves. At the international level, he has represented GSI in the India Peru Joint Working Group, the Russia India Mining Sub Group and at the International Mining and Resources Conference (IMARC) 2022 in Australia.
What Is the Geological Survey of India?
The Geological Survey of India (GSI) is India’s premier national agency for geological surveys, mineral exploration and geoscience data. GSI stands for Geological Survey of India. It works as an attached office of the Ministry of Mines and is the main provider of basic earth science information to government, industry and the public.
GSI is one of the oldest scientific organisations in the country and among the oldest geological surveys in the world. It is the second oldest survey in India after the Survey of India, which was founded in 1767. Over time GSI has grown into a vast storehouse of geological maps, mineral data and research that supports mining, infrastructure, groundwater assessment and disaster planning.
GSI Under Which Ministry and Where Is It Headquartered?
GSI comes under the Ministry of Mines, Government of India. It functions as an attached office of the Ministry, which sets policy for mineral exploration, mining and auction of mineral blocks.
GSI is headquartered in Kolkata, West Bengal. The Kolkata headquarters traces back to the early years of the organisation, when its office and geological museum were set up in the city in the 19th century.
For field work across the country, GSI operates through six regional offices:
| Regional Office | Location |
|---|---|
| Eastern Region | Kolkata |
| Central Region | Nagpur |
| Northern Region | Lucknow |
| Western Region | Jaipur |
| Southern Region | Hyderabad |
| North Eastern Region | Shillong |
In addition, GSI has state unit offices in almost all states to carry out local surveys and maintain close work with state geology and mining departments. Training and advanced research are supported by the training institute of GSI in Hyderabad.
When Was the Geological Survey of India Established?
GSI was formally established on 4 March 1851. Its roots lie in earlier efforts to find coal for steam transport and railways. In 1836, a committee for the investigation of coal and mineral resources was set up to study coal availability in eastern India.
David Hiram Williams of the British Geological Survey was appointed in December 1845 as surveyor of coal districts and superintendent of coal works in Bengal. He arrived in India in February 1846. The phrase Geological Survey of India was first used in his 1847 map and report on the Damodar and Ajay coalfields.
Thomas Oldham, professor of geology at Trinity College Dublin, took charge as the first head of GSI on 5 March 1851. In the early years GSI focused mainly on coal. Oldham widened its work to systematic mapping of rock types, geological structures and relative ages of rock formations. The headquarters was set up in Kolkata in 1856, and the first geological map of India was published in 1877. Pramatha Nath Bose, who joined in 1880, was the first Indian officer of the survey.
After Independence, M. S. Krishnan became the first Indian director in 1951. In 1961 the post of head was renamed Director General, with B. C. Roy as the first holder. In 2018 GSI was reorganised into five missions covering baseline surveys, mineral resource assessment, geoinformatics, multidisciplinary geosciences, and training and capacity building. The organisation completed 175 years in March 2026.
What Does GSI Do? Core Functions and National Role
GSI creates and updates national geoscientific information and assesses mineral resources. Its work is carried out through ground surveys, airborne surveys and marine surveys, along with geophysical, geochemical and geological studies.
Its main areas of work include systematic geological mapping, mineral prospecting and resource assessment for ferrous, base, precious, strategic and industrial minerals, and geotechnical studies for dams, tunnels, roads and other major projects. GSI also conducts geoenvironmental studies, groundwater assessments, glaciology and seismotectonic studies, and investigations of landslides, earthquakes and other natural hazards.
The results feed into several national needs. Exploration data helps the government identify mineral blocks for auction under the mining law. Hazard and landslide studies support disaster preparedness. Offshore surveys help assess mineral potential within India’s Exclusive Economic Zone. GSI also maintains museums, archives and spatial databases and works to spread knowledge of earth science through training and public outreach.
Why the New Leadership Matters for Critical Mineral Security
Ganvir takes charge at a time when secure supplies of lithium, cobalt, rare earth elements and other critical and strategic minerals are vital for electric vehicles, semiconductors, defence systems and clean energy. As National Mission Head-II, he was closely linked to a fivefold rise in investigations for critical and strategic minerals in recent years.
During that period, GSI handed over 359 Geological Reports and 377 Geological Memorandums to support the mineral auction process. Of these, 202 blocks related to critical minerals, and 40 blocks have been successfully auctioned. These reports form the scientific base on which state governments auction mining rights.
On taking office, Ganvir said GSI must deepen the scientific quality and national impact of its work. His stated priorities include sharper exploration for critical and strategic minerals through integrated surveys, advanced mineral prospectivity mapping and systematic creation of auction ready blocks. He has also stressed wider use of modern tools and data analytics, stronger laboratories, offshore exploration and continued work on landslides, glacial studies and support to major infrastructure projects. For institutional growth, he has called for empowering scientists, rewarding merit and performance, and closer coordination among national missions, regional offices and state units.
From 54th to 55th Director General: The Leadership Transition
Ganvir succeeds Varsha Ashok Aglawe, who assumed charge as the 54th Director General on 31 July 2026. Aglawe became the first woman to head GSI in its long history of more than 175 years. She had taken over from Asit Saha, who served as Director General from July 2024 to July 2026.
Aglawe is a palaeontologist, a scientist who studies fossils, and a palynologist, a specialist in pollen, spores and other microscopic plant remains. She joined GSI in 1992 after an early stint with the Indian Bureau of Mines and rose to serve as Additional Director General and Head of Department, Eastern Region, Kolkata.
Her research focused on Late Cretaceous to Palaeocene sediments, the Cretaceous Tertiary boundary that marks the age of dinosaur extinction, and the Satpura Gondwana Basins. She reported the Salbardi Ghorpend area in central India as a new dinosaur nesting site and set up a modern palynology laboratory at GSI’s Northern Region office in Lucknow. Like Ganvir, she had placed strong emphasis on critical minerals, deep seated deposits, offshore exploration and laboratory strength, giving continuity to the current change of leadership.
Key Takeaways
- Dinesh Vitthalrao Ganvir assumed charge as the 55th Director General of GSI on 1 November 2026.
- GSI is an attached office of the Ministry of Mines, headquartered in Kolkata, and was established on 4 March 1851.
- Ganvir joined GSI on 1 July 1994 and earlier served as Additional Director General, Central Region, Nagpur with charge of National Mission Head-II.
- Under his coordination, GSI recorded a fivefold rise in critical mineral investigations and handed over 359 Geological Reports and 377 Geological Memorandums.
- He succeeds Varsha Ashok Aglawe, the 54th Director General and the first woman to head GSI, who took charge on 31 July 2026.
