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: 10, 1974

Summary of radiometric ages of Tertiary volcanic rocks in Nevada. Part IV: northwestern Nevad (932 KB PDF), p. 1.
— Edwin H. McKee and Richard F. Marvin

Apparent Paleozoic ages from southern Arizona: K-Ar and Rb-Sr geochronolog (584 KB PDF), p. 7.
— Paul Pushkar and Paul E. Brookins

Radiometric age determinations from the Sandia Granite, New Mexico: summary and interpretatio (747 KB PDF), p. 11.
— Douglas G. Brookins

K-Ar and Rb-Sr age determinations on ferrostilpnomelane from the Deer Isle Mine, Penobscot Bay, Main (344 KB PDF), pp. 15-16.
— D.G. Brookins and John D. Obdradovich

K-Ar ages of selected Tertiary igneous rocks in southwestern Montana (607 KB PDF), pp. 17-20.
— R.F. Marvin, K.L. Wier, H.H. Mehnert, and V.M. Merritt

K-Ar ages of volcanic rocks from the central Sierra Peha Blanca, Chihuahua, Mexic (783 KB PDF), pp. 21-23.
— Leticia A. Alba and Rafael Chavez

Isochron/West: A Bulletin of Isotopic Geochronology (932 KB PDF), pp. 1-24.
— John H. Schilling, [ed.]