Rb-Sr, K-Ar and fission track ages for granites from Penang Island, West Malaysia: an interpretation model for Rb-Sr whole-rock and for actual and experimental mica data
Article Abstract:
The occurrence of a late-Triassic intrusive event caused the granites of Penang Island, Malaysia, to feature varying of Rb-Sr, K-Ar and fission track isotopic readings. The distortion was due to the mixing of older isochrons with younger ones containing high levels of (87/86)Sr. Chronological assessment of the granites required the use of other radiometric methods to determine the accuracy of the dating method. In addition, rock formations around the island exhibited similar isotopic concentrations.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1992
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Anticorrelated Rb-Sr and the K-Ar age discordances, Leuchtenberg granite, NE Bavaria, Germany
Article Abstract:
The K-Ar age progression within the northern lobe of the Leuchtenberg granite, NE Bavaria, Germany shows that this part cooled down over a period of the order of 20 Ma while the southern part suffered a different thermal history. The northern half of the intrusion probably altered its orientation by subsequent tectonic movements. The study shows the applicability of an integrated Rb-Sr and K-Ar dating in developing a detailed chronological profile of a single igneous intrusion.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1995
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