Isochron/West

We are a research and service division of:

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.

Year (1971 to 1996): OR From (Year): To: Issue:

Title: Author(s): (Enter a comma delimited list.)

Keyword(s): Use All Keywords? County: (only for NM)
(Enter a comma-delimited list for multiple keywords, time periods, or regions; check 'Use All' to limit results.)

Issue: 27, 1980

230Th and 231Pa dating of unrecrystallized fossil mollusks from marine terrace deposits in west-central California (468 KB PDF), p. 3.
— Barney J. Szabo

K-Ar dating of Snake River Plain (Idaho) volcanic rocks-new results (961 KB PDF), p. 5.
— Richard Lee Armstrong, J.E. Harakal, and W.M. Neill

Radiometric ages of some Eocene volcanic rocks, southwestern Montana (279 KB PDF), p. 11.
— R.A. Chadwick

K-Ar ages of volcanic and plutonic rocks in the northern Wassuck Range, central-western Nevada (672 KB PDF), pp. 13-16.
— E.C. Bingler, M.L. Silberman, and E.H. McKee

Sr-isotope initial ratios from the Engle Basin volcanics, south-central New Mexico (237 KB PDF), pp. 17-18.
— D.G. Brookins, R.G. Warren, and A.M. Kudo

Rb-Sr isochron age of Precambrian plutons of the San Pedro Mountains, north-central New Mexico (870 KB PDF), pp. 19-25.
— R.A. Wobus and C.E. Hedge

Sr isotope study of andesites from the southern Albuquerque Basin, New Mexico (253 KB PDF), pp. 27-28.
— D.G. Brookins, J.A. Kasten, and A.M. Kudo

Age of thrust faulting. Little Hatchet Mountains, southwestern New Mexico (405 KB PDF), pp. 29-30.
— A.K. Loring and R.B. Loring

Sr isotope initial ratios from the Taos volcanic field, northern New Mexico (445 KB PDF), pp. 31-32.
— D.G. Brookins and C.J. Zimmerman

Isochron/West, A Bulletin of Isotopic Geochronology, pp. 1-32.
— John H. Schilling, Joan C. Pendelton, Janet Amesbury, and Mati A. Stephens, [eds.]