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Total nitrogen content of deep sea basaltsAn estimate of the total nitrogen content of the earth's mantle, aimed at furnishing a further constraint for earth atmosphere origin and evolution models, was attempted through thermal neutron activation analysis via N-14(n,p)C-14 for the case of deep sea basalt glasses from the East Pacific Rise, the Mid-Atlantic Rift, and the Juan de Fuca Ridge. The increased nitrogen abundance of matrix material from the same samples as the glasses may be due to the incorporation of chemically-bound nitrogen from sea water, rather than dissolved molecular nitrogen. A discussion is presented of factors affecting observed basalt nitrogen content and its interpretation in terms of mantle nitrogen abundance. A 2 ppm N lower limit is estimated for the mantle.
Document ID
19820044752
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Norris, T. L.
(State Univ. of New York Stony Brook, NY, United States)
Schaeffer, O. A.
(New York, State University Stony Brook, NY, United States)
Date Acquired
August 10, 2013
Publication Date
March 1, 1982
Publication Information
Publication: Geochimica et Cosmochimica Acta
Volume: 46
Subject Category
Geophysics
Accession Number
82A28287
Funding Number(s)
CONTRACT_GRANT: NGL-33-015-174
Distribution Limits
Public
Copyright
Other

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