Coal mines in Jharkhand help retrace a long-lost world

1. At a Glance

A Birbal Sahni Institute of Palaeosciences (BSIP) study used fossils & geochemistry from open-cast coal mines in Jharkhand to reconstruct a ~300-million-year-old Gondwanan ecosystem of swampy forests and rivers [S1][S2].
Provides the first-ever juvenile male cone of Glossopteris from the Damodar Basin and evidence of a Permian marine incursion (~280–290 Mya) into peninsular India [S2].
UPSC relevance: links Gondwana geology, Indian coal origins, palaeoclimate & sea-level analogues for modern climate change — testable in GS-I (geography) and GS-III (S&T, environment).

PIB release, 19 Feb 2026 (Ministry of Science & Technology) announcing the BSIP-led multidisciplinary study published in the International Journal of Coal Geology (2025), DOI 10.1016/j.coal.2025.104860 [S1][S2].

Gondwanaland: southern supercontinent comprising India, Antarctica, South Africa, South America, Australia [S1].
India's Gondwana coal measures (Permian, ~300 Mya) host ~98% of the country's coal reserves; Damodar Valley basins (Raniganj, Jharia, Bokaro, North Karanpura) are classic Gondwana coalfields [S1].
Earlier theories on Permian sea incursion routes were debated; this study supplies new palaeobotanical + geochemical proof from the Ashoka Coal Mine, North Karanpura Basin [S1][S2].

Lead institute: Birbal Sahni Institute of Palaeosciences (BSIP), Lucknow — autonomous body under Department of Science & Technology (DST) [S1][S2].
Parent ministry: Ministry of Science & Technology [S1].
Site: Ashoka Coal Mine, North Karanpura Basin, Jharkhand [S2].
Age studied: ~300 Mya (Early Permian, Gondwana sequence) [S1].
Key fossil: ≥14 species of Glossopteris — incl. G. searsolensis, G. giridihensis, G. subtilis, G. stenoneura, G. nautiyalii [S2].
Marker minerals: framboidal pyrite + high sulphur → brackish/marine influence [S2].
Technique: palaeobotany + Rock-Eval pyrolysis + Gas Chromatography–Mass Spectrometry (GC-MS) + palynology [S2].
Journal: International Journal of Coal Geology (2025) [S2].

Scientific / Technological
Combines palynology, organic geochemistry, GC-MS, Rock-Eval pyrolysis to date and characterise sediments [S2].
First juvenile male cone of Glossopteris in Damodar Basin — closes a reproductive-biology gap of the dominant Gondwana flora [S2].
Environmental / Climate
Shows continental basins were periodically inundated by Permian seas ~280–290 Mya; serves as a deep-time analogue for how modern sea-level rise can reshape coastal/continental landscapes [S1][S2].
Economic
Validates Gondwana coal-forming environment of Damodar Valley fields — relevant to India's coal resource understanding (Jharkhand contributes a major share of national coal output) [S1].
Historical / Geological
Strengthens continental drift evidence linking India with Antarctica, Australia, S. Africa, S. America via shared Glossopteris flora [S1].

2025: BSIP study published in International Journal of Coal Geology (DOI 10.1016/j.coal.2025.104860) [S2].
19 Feb 2026: PIB announcement by Ministry of Science & Technology [S1].
Prior 2024 BSIP/DST study on South Karanpura coalfield flagged significant shale gas generation potential [S3].

BSIP = Birbal Sahni Institute of Palaeosciences (renamed from Palaeobotany); located in Lucknow; autonomous under DST [S1][S4].
Parent ministry of BSIP: Science & Technology — not Ministry of Coal or MoEFCC [S1].
Site of study: Ashoka Coal Mine, North Karanpura Basin, Jharkhand [S2].
Age of reconstructed ecosystem: ~300 million years (Permian) [S1].
Marine incursion dated to: 280–290 Mya [S2].
Indicator mineral for brackish/marine conditions: framboidal pyrite [S2].
Glossopteris = dominant seed fern of Gondwana; key biogeographic evidence for continental drift [S1].
Gondwanaland included: India + Antarctica, S. Africa, S. America, Australia [S1].
Techniques used: Rock-Eval pyrolysis & GC-MS [S2].
Publication venue: International Journal of Coal Geology, 2025 [S2].
Damodar Valley Gondwana coalfields include: Raniganj, Jharia, Bokaro, North Karanpura [S1].

GS-I: Physical Geography — distribution of natural resources, geomorphology, evolution of Indian landmass.
GS-III: Science & Technology — indigenous research; Environment — palaeoclimate & sea-level change analogues.
Sample stems: 1. "Discuss how palaeobotanical evidence from Indian Gondwana basins reinforces the theory of continental drift." (GS-I) 2. "How can deep-time studies of marine incursions inform current climate-change adaptation policy?" (GS-III) 3. "Examine the role of BSIP and other DST autonomous bodies in advancing India's earth-science research." (GS-III)

Gondwana coal vs Tertiary coal — distribution, quality.
Continental drift & plate tectonics — Wegener, Indian plate.
Damodar Valley Corporation (DVC) — India's first multipurpose river-valley project.
Permian-Triassic boundary & mass extinction — geological time scale.
Shale gas in India — South Karanpura coalfield study [S3].
BSIP & other DST autonomous institutes (WIHG, IIA, ARIES).
Climate-change & sea-level rise — IPCC reports, coastal vulnerability.
Coal sector reforms — commercial coal mining auctions, Jharkhand context.

BSIP is under DST (Ministry of Science & Technology), not Ministry of Coal/Mines or MoEFCC.
Institute's current name is Birbal Sahni Institute of Palaeosciences (renamed from "Palaeobotany") [S4].
The era reconstructed is Permian (~300 Mya) — predates dinosaurs (Mesozoic); easy to confuse.
Glossopteris is a seed fern (gymnosperm-like), not a flowering plant.
Site is North Karanpura Basin (Ashoka Mine) — not Jharia or Raniganj.

[S1] Coal mines in Jharkhand help retrace a long-lost world — PIB, Ministry of S&T, 19 Feb 2026 — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2230221 — (tier 1)
[S2] Coal mines in Jharkhand help retrace a long-lost world — DST — https://dst.gov.in/coal-mines-jharkhand-help-retrace-long-lost-world — (tier 1)
[S3] Study indicates significant shale gas generation potential in eastern South Karanpura coalfield, Jharkhand — PIB/DST — https://www.pib.gov.in/PressReleasePage.aspx?PRID=2063700 — (tier 1)
[S4] The journey from Palaeobotany to Palaeosciences — DST — https://dst.gov.in/journey-palaeobotany-palaeosciences — (tier 1)