CaltechAUTHORS
  A Caltech Library Service

^(238)U-^(230)Th dating of a geomagnetic excursion in Quaternary basalts of the Albuquerque Volcanoes Field, New Mexico (USA)

Peate, D. W. and Chen, J. H. and Wasserburg, G. J. and Papanastassiou, D. A. and Geissman, J. W. (1996) ^(238)U-^(230)Th dating of a geomagnetic excursion in Quaternary basalts of the Albuquerque Volcanoes Field, New Mexico (USA). Geophysical Research Letters, 23 (17). pp. 2271-2274. ISSN 0094-8276. http://resolver.caltech.edu/CaltechAUTHORS:20131113-134356119

[img]
Preview
PDF - Published Version
See Usage Policy.

630Kb

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20131113-134356119

Abstract

We report the ^(238)U-^(230)Th age derived from samples from three basalt flows from the Albuquerque Volcanoes Field, central New Mexico (USA), interpreted to have erupted during one of the Bruhnes Chron geomagnetic field polarity events. Whole-rock samples and magnetite separates from two of the samples define an isochron with an age of 156±29 ka (2σ). It is now possible to determine the ages of geomagnetic excursions with reasonable precision, by the ^(238)U-^(230)Th method, using basalts erupted between possibly 25 and up to 250 ka. Although a strict correlation of the polarity event recorded by the Albuquerque lavas with other high amplitude field phenomena in the latest Quaternary is not yet possible, the Blake and the less well-documented Old Crow and Biwa I/Jamaica events are likely candidates.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1029/96GL02064 DOIArticle
http://onlinelibrary.wiley.com/doi/10.1029/96GL02064/abstractPublisherArticle
Additional Information:© 1996 by the American Geophysical Union. We are grateful to N. Thouveny and an anonymous reviewer for careful and constructive reviews. This work was supported by DOE Grant DE FG 03 88 ER 13851 and NSF-EAR Grant 9205596. Division contribution #5608(911).
Funders:
Funding AgencyGrant Number
Department of Energy (DOE)DE FG 03 88 ER 13851
NSFEAR-9205596
Other Numbering System:
Other Numbering System NameOther Numbering System ID
Caltech Division of Geological and Planetary Sciences5608
Lunatic Asylum Lab911
Record Number:CaltechAUTHORS:20131113-134356119
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20131113-134356119
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:42431
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:13 Nov 2013 22:39
Last Modified:13 Nov 2013 22:39

Repository Staff Only: item control page