Isochron/West

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Isochron/West was published at irregular intervals from 1971 to 1996. The journal was patterned after the journal Radiocarbon and covered isotopic age-dating (except carbon-14) on rocks and minerals from the Western Hemisphere. Initially, the geographic scope of papers was restricted to the western half of the United States, but was later expanded. The journal was sponsored and staffed by the New Mexico Bureau of Mines (now Geology) & Mineral Resources and the Nevada Bureau of Mines & Geology.

Papers from all back-issues are accessible for free in PDF format.

Should you wish to publish a geoscience paper of regional interest on any topic please consider our journal New Mexico Geology.

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Issue: 28, 1980

K-Ar ages of the Friant Pumice Member of the Turlock Lake Formation, the Bishop Tuff, and the tuff of Reds Meadow, central California (888 KB PDF), p. 3.
— G.B. Dalrymple

K-Ar ages of upper Cenozoic volcanic rocks, northern Californi (387 KB PDF), p. 7.
— R.G. Luedke and M.A. Lanphere

K-Ar age of alunite alteration at Red Mountain, Lake City area, western San Juan Mountains, Colorado (561 KB PDF), p. 9.
— H.H. Mehnert, J.F. Slack, and G.T. Cebula

Potassium-argon dates and strontium isotopic values for rocks of the Tobacco Root batholith, southwestern Montana (573 KB PDF), pp. 13-16.
— C.J. Vitaliano, S. Kish, and D.G. Towell

K/Ar ages of middle Tertiary igneous rocks from southern New Mexico (797 KB PDF), pp. 17-20.
— A.K. Loring and R.B. Loring

K-Ar ages of silicic volcanism in the Twin Peaks/Cove Creek Dome area, southwestern Utah (651 KB PDF), pp. 21-24.
— S.H. Evans, H.R. Crecraft, and W.P. Nash

Isochron/West, A Bulletin of Isotopic Geochronology, pp. 1-24.
— John H. Schilling, Joan C. Pendelton, Janet Amesbury, and Mati A. Stephens, [eds.]