Dating a Granite

Synopsis: Looks at two methods of dating granite. Shap granite in Cumbria is dated using corroborative fossil evidence and the construction of a geological map. In a laboratory the method of using radioactive decay of uranium isotopes to lead isotopes isolated from zircon crystals in the granite is illustrated. This gives a date for the granite accurate to plus or minus four million years.
Series: Science Foundation Course, A: Course S102
Language: English
Country: Great Britain
Medium: Video; Videocassette. Standard formats. col. 25 min.
Year of production: 1988
Availability: Sale; 1998 sale: £145.00 (+VAT +p&p)
Subjects: Geology
Keywords: granites; radioactivity; rocks

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