One of the most spectacular events in the history of the Indian subcontinent, was the outpouring of continental flood basalt, the Deccan basalt/Trap, during the upper Cretaceous-Eocene period straddling the K/T boundary. The Deccan basalts received world-wide attention with the publication of Plateau Basalts by Washington in 1922. Since then, the studies on the Deccan basalts by the Geological Survey of India have continued. The Centre of Advanced Study in Geology, University of Saugar, Sagar, established in 1964 under the Directorship of late Professor William Dixon West, embarked on a major programme on Deccan basalts. An international Flood Basalt Conference was organised in 1969 by the Centre, which brought the leading basalt specialists to India such as Keith Cox and others.

Geological Society of India organised a group discussion on ‘Deccan Volcanism and related Basalt Provinces in other parts the world’ in Bombay/Khandala in 1979 and brought out the proceedings as Memoir 3. A Field workshop was organised in 1988 in Mumbai/Pune and the workshop presentations resulted in the Memoir 10 - ‘Deccan Flood Basalt’. The Society also brought out a volume on ‘Deccan Volcanic Province’, in two parts containing collection of classic contributions of eminent personalities, in honour of Profess W.D.West in 1999. Geological Society of India also published a memoir specially on the Hydrogeology of Deccan Traps and Associated Formations in Peninsular India in 2012.

The K/T boundary link between the Deccan basalt eruptions and mass extinctions include the termination of dinosaurs. A speculated possibility is that at Cretaceous-Tertiary boundary (K/T boundary), a gigantic space-rock slammed the earth and instantly vaporised unleashing the energy of millions of nuclear explosions with debris flying everywhere. Consequently, the emanating fumes blocked the sunshine leading to serious disruption of ecosystem and life, sending dinosaurs or giant ammonoides into extinction and, thus, giving small mammals the opportunity to evolve to the dimensions of the ocean-dwelling whales and the land-dwelling mammals, and thereafter culminating into most advanced form of life i.e. Homo sapiens.

Recent studies of the geochronology of zircon (Pb-Pb) from the thick lava sequences of western India enabled a better understanding of the link between the eruption of Deccan basalts and the K/T boundary. The Seminar has the following objectives:
  • To discuss the status of our knowledge on the Deccan basalts in terms of their physical, mineralogical, chemical, isotopic attributes and future studies on the Deccan.
  • To discuss the geochronology of the thick flow sequence on the one hand, and their implications on the K/T boundary events, especially the mass extinction, on the other.
  • To deliberate on the understanding of the surface geological information, borehole data and geophysics, and their links to seismicity of the Koyna region.
  • To share the information generated on the biotic events across K/T boundary deciphered from the study of rock record of the period.
With this background, we are now organising a three-day National Seminar entitled “Deccan Volcanisms and Biotic Events across the K/T boundary” to concur with the Annual General Meeting (AGM) 2017 of the Geological Society of India, Bengaluru, at Dr. Harisingh Gour Vishwavidyalaya, Sagar.

Themes
  • Petrology and geochemistry of Deccan volcanics and associated sedimentaries
  • Paleontological proxies and paleoenvironmental analyses
  • Case studies across the K/T boundary in the subcontinent
  • Paleomagnetic studies across the K/T boundary
  • Future scope of studies across K/T boundary
  • Miscellaneous
Important Dates

Early bird registration: 15th August 2017
Submission of Abstracts: 15th August 2017
Acceptance of Abstracts: 30th August 2017
Submission of Full papers: 1st October 2017

For Further information contact the convenors: Professor R. K. trivedi-rkt_sagar@hotmail.com and Professor P. K. Kathal - kathalpk@rediffmail.com, ktb17_sgr@rediffmail.com. Web site: www.ktbsagar2017.org

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