A Caltech Library Service

Terrestrial cosmogenic argon

Renne, Paul R. and Farley, Kenneth A. and Becker, Tim A. and Sharp, Warren D. (2001) Terrestrial cosmogenic argon. Earth and Planetary Science Letters, 188 (3-4). pp. 435-440. ISSN 0012-821X. doi:10.1016/S0012-821X(01)00336-3.

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item:


Cosmogenically enriched ^(38)Ar/^(36)Ar ratios are detectable in Ca-bearing terrestrial samples, and are resolvable from a uniform background value of 0.18826±0.00018 for materials lacking nucleogenic or kinetic mass fractionation effects. Relationships between ^(38)Ar/^(36)Ar and cosmogenic ^3He in apatite and fluorite are systematic but difficult to reconcile with current estimates of terrestrial production rates for ^(38)Ar and ^(36)Ar from Ca, suggesting that production from Cl and/or other targets is significant, or that the estimates are inaccurate. In either case, the effects of time-varying production of ^(36)Ar from β^− decay of cosmogenic ^(36)Cl produced from Ca, K, or Cl on the ^(38)Ar/^(36)Ar ratio must be accounted for.

Item Type:Article
Related URLs:
URLURL TypeDescription
Farley, Kenneth A.0000-0002-7846-7546
Additional Information:© 2001 Elsevier Science B.V. Received 28 December 2000; accepted 3 April 2001. We thank the Hawaii Scientific Drilling Project, J.N. Christensen and J.J. Donovan for various 'baseline' samples; P.G. Fitzgerald for the Trans-antarctic samples; B.M. Kennedy, K. Min and K.B. Knight for discussion and suggestions on the manuscript; F.M. Phillips for a preprint of a paper cited herein; D. Lal and an anonymous referee for constructive reviews of the manuscript. We dedicate this paper to the late Prof. John H. Reynolds.[EB]
Subject Keywords:cosmogenic elements; argon; isotopes
Issue or Number:3-4
Record Number:CaltechAUTHORS:20121113-130518124
Persistent URL:
Official Citation:Paul R. Renne, Kenneth A. Farley, Tim A. Becker, Warren D. Sharp, Terrestrial cosmogenic argon, Earth and Planetary Science Letters, Volume 188, Issues 3–4, 15 June 2001, Pages 435-440, ISSN 0012-821X, 10.1016/S0012-821X(01)00336-3. (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:35437
Deposited By: Ruth Sustaita
Deposited On:13 Nov 2012 21:25
Last Modified:09 Nov 2021 23:15

Repository Staff Only: item control page