Research area:
Geochronology and Isotope geochemistry
Methods:
Application of Rb-Sr, Sm-Nd, U-Pb, Lu-Hf isotopic systematics to whole rocks and minerals, with petrological and structural constraints, to decipher temporal aspect of crustal evolution.
Laboratory:
Isotopic work is carried out on a magnetic sector Multiplecollector Inductively Coupled Plasma Mass Spectrometer (MC-ICPMS) whereas trace and rare earth element concentrations are measured on a Quadrupole Inductively Coupled Plasma Mass Spectrometer (Q-ICPMS), both housed in the Department of Geology & Geophysics.
Rock and mineral chemical processing for element separation and preconcentration, before isotopic ratio analysis, is done in the attached Clean Chemistry Laboratory in Class 100 Vertical Laminar Airflow work benches.
Domains:
1. Constraining orogenic evolution using geochronology of deformation and magmatic events (Neoproterozoic orogen in East Antarctica, Himalayan orogen in Sikkim, East Antarctica)
2. Strontium Isotope Stratigraphy of Mesozoic and Cenozoic marine sequences in W India
3. Ultrahigh pressure rocks in NW India, Ladakh
4. Provenance of Himalayan foreland sequences using detrital zircons
5. Paleoproterozoic crustal evolution at the margins of the Dharwar craton
6. Evolution of komatiites and basalt-chert-sediment sequences in Archean greenstone belts
7. Bastar craton and supracrustal evolution (initiated)
8. Direct dating of sulfides
Ongoing plans:
Establishment of chemistry for K-Ca, Re-Os, Mo and W isotopic systematics and their geological applications
Principal Investigator
- Inferring Paleoarchean Crustal Evolution of the Bastar Craton from Granitoids and their Supracrustal Enclaves using Geochemistry and U - Pb, Sm - Nd and Lu - Hf Geochronology Ministry of Earth Sciences
Ph. D. Students
Ankita Nandi
Area of Research: Geochemistry, geochronology and crustal evolution
