Rb-Sr Ages of Cordierite-Gneisses of Southern Karnataka

Authors

  • S. Jayaram
     Indian Institute of Science, Bangalore
  • V. S. Venkatasubramanian
     Indian Institute of Science, Bangalore
  • B. P. Radhakrishna
     Geological Society of India, Bangalore

Abstract

The cordierite-gneisses of southern Karnataka give Rb-Sr ages of 3010±90 rn.y. indicating jheir relationship to 3000 m.y. event in the Dharwar craton, for which evidence is available in a number of areas.

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Issue

Volume 17, Issue 4, December 1976

Section

Research Notes

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Published

1976-12-01

How to Cite

Jayaram, S., Venkatasubramanian, V. S., & Radhakrishna, B. P. (1976). Rb-Sr Ages of Cordierite-Gneisses of Southern Karnataka. Journal of Geological Society of India, 17(4), 557–561. Retrieved from https://geosocindia.com/index.php/jgsi/article/view/63951

References

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CRAWFORD, A. R. (1969) Reconnaissance Rb-Sr dating of the Precambrian rocks in Southern Peninsular India. Jour. Geol. Soc. India, v. 10, pp. 117-166.

CLIFFORD, T. N. (1974) Review of African Granulites and related Rocks. Geol, Soc. America, Spl, Paper, v. 156.

JAYARAM, B., (1912) Report on a portion of the Closepet granite and associated rocks. Rec. Mysore Geo. Dept., v. 12, p. 93.

RAMA RAO, B., (1925) The Kodamites or the cordierite micaceous gneisses of Channapatna area. Rec. Mysore Geol, Dept., V. 24, pp. 134-152.

RAMA RAO, B. and KRISHNACHAR, T. P., (1938) The cordierite hypersthene granulites and their associated schistose rocks from Bidaloti, Mysore State. Rec. Mysore Geol. Dept., v. 36, pp. 40-75.

RADHAKRISHNA, B. P., (1954) On the nature of certain cordierite bearing granulites bordering the Closepet granites of Mysore. Bull. Mysore Geol, Dept., no. 21, pp. 17-21.

SEN, A. M., (1912) Report on the Geology of parts of the Bangalore and Tumkur Districts. Rec, Mysore Geol. Dept., v. 12, p. 121.

VENKATASUBRAMANIAN, V. S., (1974) Geochronology of the Dharwar Cration-A Review. Jour. Geol. Soc. India, v. 15, no. 4. pp. 463-68.