NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Carbon, nitrogen and sulfur in lunar fines 15012 and 15013 - Abundances, distributions and isotopic compositionsLunar fines 15012,16 and 15013,3 were analyzed by stepwise pyrolysis and acid hydrolysis as well as complete combustion in oxygen to determine carbon, nitrogen and sulfur. In addition, hydrogen was analysed during pyrolysis as well as during hydrolysis. By comparison of the distribution frequencies of C, N, S, H2 and Fe with He-4, considered to have arisen from solar wind contribution, it is concluded that nitrogen and hydrogen have largely a solar origin. Carbon has a significant solar contribution, and metallic iron may have resulted from solar wind interaction with ferrous minerals on the lunar surface. Sulfur probably has a predominantly lunar origin. There is no direct evidence for meteorotic contribution to these samples. Solar wind interaction also has a marked effect on the stable isotope distribution of C-13/C-12, N-15/N-14, and S-34/S-32. In all cases, the heavy isotope was most enriched in the smallest grain-size fraction.
Document ID
19740050934
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Chang, S.
Lawless, J.
Romiez, M.
(NASA Ames Research Center Moffett Field, Calif., United States)
Kaplan, I. R.
Petrowski, C.
(California, University Los Angeles, Calif., United States)
Sakai, H.
(California, University Los Angeles, Calif.; Okayama University, Misasa, Tottori-Ken, Japan)
Smith, J. W.
(California University Los Angeles, Calif.; Commonwealth Scientific and Industrial Research Organization, Div. of Mineralog, Australia)
Date Acquired
August 7, 2013
Publication Date
June 1, 1974
Publication Information
Publication: Geochimica et Cosmochimica Acta
Volume: 38
Subject Category
Chemistry
Accession Number
74A33684
Funding Number(s)
CONTRACT_GRANT: NGR-05-007-289
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available