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Petrography and age of the rocks of Bulland Hill, Kirana Hills, Sarghoda District, West Pakistan

Published online by Cambridge University Press:  01 May 2009

R. G. Davies  and
A. R. Crawford
R. G. Davies
Affiliation:
Geological Survey Institute, P.O. Box 1555 Tehran, Iran
A. R. Crawford
Affiliation:
Department of Geophysics and Geochemistry, Institute of Advanced Studies, Australian National University, Canberra, Australia2600.
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Summary

Petrographic and geochronological studies of the rocks of Bulland Hill, an inlier of basement in the Punjab alluvium, are reported. Acid and basic pyroclastic and high-level intrusive types give an Rb–Sr isochron age of 870±40 million years. The previous correlation with the Malani Rhyolite Series of north-western India must be abandoned.

A porphyry boulder from the Permo-Carboniferous boulder bed, probably a tillite, in the Salt Range has the same age as the Bulland Hill rocks.

Type
Articles
Information
Geological Magazine , Volume 108 , Issue 3 , May 1971 , pp. 235 - 246
Copyright
Copyright © Cambridge University Press 1971

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References

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