Abstract
The 40Ar/39Sr stepheating dating method was applied to parts of three boulders recovered at Site 439, DSDP Leg 57. All the samples gave a well-defined isochron. The isochron ages agree with each other within the experimental uncertainties and give a mean value of 21.4+-1.0Ma. -Authors
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APA
Yanagisawa, M., Takigami, Y., Ozima, M., & Kaneoka, I. (1980). Ar40-Ar39 ages of boulders drilled at Site 439, Leg 57, Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project Legs 56 & 57, Part 2 Yokohama Japan to Yokohama Japan 1977, (U.S. Govt Printing Office, U.K. Distributors IPOD, NERC Swindon), 1281–1284. https://doi.org/10.2973/dsdp.proc.5657.160.1980
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