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: 31, 1981

Age determinations from other publications—list 4, (1.73 MB PDF), p. 3.
— S.L. Nichols Tingley

K-Ar dating of hydrothermal alteration, Ixtapan de la Sal, Mexico State, Mexico (334 KB PDF), pp. 15-16.
— J. Urrutia-Fucugauchi and E. Linares

The Mule Mountain stock, an early Middle Devonian pluton in northern California (279 KB PDF), pp. 17-18.
— J.P. Albers, R.W. Kistler, and L. Kwak

K/Ar ages of the Pyramid sequence in the vicinity of the San Emidio Geothermal Area, Washoe County, Nevada (613 KB PDF), pp. 19-22.
— S.H. Evans, J.N. Moore, and M.C. Adams

Uranium-thorium-lead isotopic ages of metamorphic monazite from the Northern Snake Range, Nevada (305 KB PDF), pp. 23-24.
— D.E. Lee, T.W. Stern, and R.F. Marvin

Uranium-thorium-lead isotopic ages of zircon from the Southern Snake Range, Nevada (300 KB PDF), pp. 25-26.
— D.E. Lee, T.W. Stern, and R.F. Marvin

K-Ar 3ges of plutonism and mineralization, western Cascades, Oregon and southern Washington (798 KB PDF), pp. 27-30.
— S.G. Power, C.W. Field, R.L. Armstrong, and J.E. Harakal

Age of Imnaha Basalt—oldest basalt flows of the Columbia River Basalt Group, northwest United States (442 KB PDF), pp. 31-33.
— E.H. McKee, P.R. Hooper, and W.D. Kleck

Isochron/West, A Bulletin of Isotopic Geochronology, pp. 1-34.
— John H. Schilling, Joan C. Pendelton, Janet Amesbury, Mati A. Stephens, and Susan L. Tingley, [eds.]