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The Viking X ray fluorescence experiment - Sampling strategies and laboratory simulationsTen samples of Mars regolith material (six on Viking Lander 1 and four on Viking Lander 2) have been delivered to the X ray fluorescence spectrometers as of March 31, 1977. An additional six samples at least are planned for acquisition in the remaining Extended Mission (to January 1979) for each lander. All samples acquired are Martian fines from the near surface (less than 6-cm depth) of the landing sites except the latest on Viking Lander 1, which is fine material from the bottom of a trench dug to a depth of 25 cm. Several attempts on each lander to acquire fresh rock material (in pebble sizes) for analysis have yielded only cemented surface crustal material (duricrust). Laboratory simulation and experimentation are required both for mission planning of sampling and for interpretation of data returned from Mars. This paper is concerned with the rationale for sample site selections, surface sampler operations, and the supportive laboratory studies needed to interpret X ray results from Mars.
Document ID
19780027535
Document Type
Reprint (Version printed in journal)
Authors
Baird, A. K. (Pomona College Claremont, Calif., United States)
Castro, A. J. (Pomona Coll. Claremont, CA, United States)
Clark, B. C. (Martin Marietta, Planetary Sciences Laboratory, Denver Colo., United States)
Toulmin, P., III (Pomona Coll. Claremont, CA, United States)
Rose, H., Jr. (U.S. Geological Survey Reston, Va., United States)
Keil, K. (Pomona Coll. Claremont, CA, United States)
Gooding, J. L. (New Mexico, University Albuquerque, N. Mex., United States)
Date Acquired
August 9, 2013
Publication Date
September 30, 1977
Publication Information
Publication: Journal of Geophysical Research
Volume: 82
Subject Category
LUNAR AND PLANETARY EXPLORATION
Funding Number(s)
CONTRACT_GRANT: NAS1-11855
CONTRACT_GRANT: NAS1-9000
CONTRACT_GRANT: NASA ORDER L-9717
CONTRACT_GRANT: NAS1-11858
Distribution Limits
Public
Copyright
Other