Corpus ID: 133628289

Rb-Sr whole-Rock Isochron Age of Early Proterozoic Potassic Granite from Dharmawaram, Karimnagar District, Andhra Pradesh

@article{Singh2004RbSrWI,
  title={Rb-Sr whole-Rock Isochron Age of Early Proterozoic Potassic Granite from Dharmawaram, Karimnagar District, Andhra Pradesh},
  author={Yamuna Prasad Singh and Kj Singh and R. N. Prasad},
  journal={Journal of Geological Society of India},
  year={2004},
  volume={64},
  pages={93-96}
}
Whole-rock Rb-Sr isochron dating of pink potassic (av.5% K 2 O) granite from Dharmawaram, Karimnagar district, Andhra Pradesh, defines an isochron corresponding to an age of 2237±46 Ma with initial 87 Sr/ 86 Sr ratio of 0.71052±0.00084. The data suggest possible emplacement of potassic granite of Dharmawaram during early Proterozoic at ca. 2237 Ma. Further, high initial 87 Sr/ 86 Sr isotopic ratio of granite also indicates involvement of silicic crustal material in its genesis. 
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