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Iron variation within a granitic pluton as determined by near-infrared reflectanceOne-hundred fifty-one previously chemically analyzed samples of tonalite from the Lakeview Mountains pluton, southern California batholith, were analyzed for their iron content using near-infrared spectrophotometry. Compared to the earlier analyses of the same sample set by X-ray fluorescence spectrography, the infrared data have higher analytical variance but clearly define patterns of compositional zonation in the pluton which are closely similar to those patterns obtained from X-ray data; petrogenetic interpretations for the pluton would be the same from either data set. Infrared spectral data can be obtained directly in the field with relatively simple instruments and field measurements can be made to average local heterogeneities that often mask significant plutonic variations.
Document ID
19850039384
Document Type
Reprint (Version printed in journal)
Authors
Baird, A. K.
(California Institute of Technology, Jet Propulsion Laboratory, Pasadena; Pomona College, Claremont CA, United States)
Date Acquired
August 12, 2013
Publication Date
May 1, 1984
Publication Information
Publication: Journal of Geology
Volume: 92
ISSN: 0022-1376
Subject Category
Geophysics
Accession Number
85A21535
Funding Number(s)
CONTRACT_GRANT: NSF GA-686
Distribution Limits
Public
Copyright
Other

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