Quick
Search: 		  
advanced search
 GSW Home   GeoRef Home   My GSW Alerts   Contact GSW   About GSW   Journals List   Help 
Clay Minerals Email Content Delivery
JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Clay Minerals; June 2000; v. 35; no. 3; p. 605-608
© 2000 Mineralogical Society of Great Britain and Ireland
This Article
Right arrow Figures Only
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Right arrow Citation Map
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by SRODON, J.
Right arrow Search for Related Content

Research Paper

Reply to discussion of "Extracting K-Ar ages from shales: a theoretical test"

J. SRODON*

Institute of Geological Sciences PAN, Senacka 1, 31-002 Kraków, Poland

* E-mail: ndsrodon{at}cyf-kr.edu.pl

(Received 11 November 1999; revised 23 February 2000)

As plots of K-Ar ages vs. percentage of the detrital component of mineral mixtures containing a detrital and a diagenetic illite (or illite-smectite) have different curved shapes, the linear extrapolation method of extracting the end-member ages is not justified. The curvature depends on the difference in K2O contents; thus it can be minimized if the percentage of detrital illite is normalized to the sum of detrital illite plus illitic fraction of diagenetic illite-smectite.

KEYWORDS: K-Ar ages, shale, end-member ages




This article has been cited by other articles:


Home page
 Clays and Clay MineralsHome page
W. C. Elliott, A. Basu, J. M. Wampler, R. D. Elmore, and G. H. Grathoff
COMPARISON OF K-Ar AGES OF DIAGENETIC ILLITE-SMECTITE TO THE AGE OF A CHEMICAL REMANENT MAGNETIZATION (CRM): AN EXAMPLE FROM THE ISLE OF SKYE, SCOTLAND
Clays and Clay Minerals, June 1, 2006; 54(3): 314 - 323.
[Abstract] [Full Text] [PDF]

Home page
 American MineralogistHome page
J. Srodon, N. Clauer, and D. D.D. Eberl
Interpretation of K-Ar dates of illitic clays from sedimentary rocks aided by modeling
American Mineralogist, November 1, 2002; 87(11-12): 1528 - 1535.
[Abstract] [Full Text] [PDF]

Home page
 American MineralogistHome page
G. H. Grathoff and D. M. Moore
Characterization of the Waukesha Illite: A mixed-polytype illite in the Clay Mineral Society repository
American Mineralogist, November 1, 2002; 87(11-12): 1557 - 1563.
[Abstract] [Full Text] [PDF]

Home page
 Mineral MagHome page
J. Srodon
Quantitative mineralogy of sedimentary rocks with emphasis on clays and with applications to K-Ar dating
Mineralogical Magazine, October 1, 2002; 66(5): 677 - 687.
[Abstract] [Full Text] [PDF]


JOURNAL HOME HELP CONTACT PUBLISHER SUBSCRIBE ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 2008 by Mineralogical Society of Great Britain and Ireland