Fission track ages of biotites from crystalline rocks of Khammam district, Andhra Pradesh, India
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Published:1978-11
Issue:6
Volume:115
Page:443-446
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ISSN:0016-7568
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Container-title:Geological Magazine
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language:en
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Short-container-title:Geol. Mag.
Author:
Nagpal M. K.,Powar K. B.,Nagpaul K. K.
Abstract
SummaryA modified fission track technique has been used for datingbiotite flakes from crystalline rocks of Khammam district in Andhra Pradesh, India. The recorded fission track ages of 368±15 Ma to 616±20 Ma, with a mean of 475±90 Ma, correspond to the period of the Indian Ocean cycle. The data suggest an average cooling rate of about 0.6 °C per million years for the closing phase of this cycle.
Publisher
Cambridge University Press (CUP)
Reference18 articles.
1. Fission track geochronology of Early Precambrian, Rajasthan, India;Sharma;Chayanica Geologica.,1975
2. Present status of Precambrian geochronology of Peninsular India;Sarkar;24th Int. Geol. Cong. Montreal.,1972
3. Tectonic history of the area East of Khammam, Andhra Pradesh;Rao;J. geol. Soc. India.,1968
4. Fission track ages of cogenetic minerals of the Nellore mica belt of India
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