Abstract
The 40Ar-39Ar step heating dating results are tabulated. For basalt samples from site 443 only total fusion ages were obtained. These ages are roughly concordant and also close to the greatest paleonological age for the overlying sediments. The sample from site 445 represents a boulder in a conglomeratic sandstone of the early M. Eocene age. The isochron age is in accordance with the other geological data. Samples from site 446 are all from sills intruded into claystone of the early M. Eocene. They gave isochron ages.-from Authors
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CITATION STYLE
Ozima, M., Takigami, Y., & Kaneoka, I. (1980). Ar40-Ar39 geochronological studies on rocks of Deep Sea Drilling Project sites 443, 445 and 446. Initial Reports of the Deep Sea Drilling Project, Leg 58, Yokohama, Japan to Okinawa, Japan, December 1977 - January 1978, 917–920. https://doi.org/10.2973/dsdp.proc.58.139.1980
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