, Volume 3, Issue 3, pp 204–208 | Cite as

Fission track annealing and age determination of hornblende

  • Nand Lal
  • Arjun Dev
  • K K Nagpaul
Experimental Techniques And Instrumentation


Hornblende which occurs in igneous and metamorphic rocks is well suited for age determination by the fission track method. The tracks which are readily etched in hydrofluoric acid are annealed in 1 hr at 530° C. Extrapolation of the experimentally determined temperatures suggest that a temperature of 200° C for one m.y. will erase all the tracks present before the heating. Fission track ages of hornblende agree with the main orogenic metamorphic cycles.


Fission track annealing age determination hornblende 


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Copyright information

© Indian Academy of Sciences 1974

Authors and Affiliations

  • Nand Lal
    • 1
  • Arjun Dev
    • 1
  • K K Nagpaul
    • 1
  1. 1.Department of PhysicsKurukshetra UniversityKurukshetra

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