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Remote sensing studies of immature soils on the Moon (Reiner-gamma formation)On the base of laboratory results and telescopic data it is shown that the spectropolarization ratio P(sub max(sup B))/P(sub max(sup R)) for blue and red spectral regions is a remote sensing parameter of lunar soil maturity. It correlates with value of maturity index derived from morphological or ferromagnetic methods of exposure age determination. This parameter is equal to 0.315 for Reiner-gamma formation. So Reiner-gamma area is covered by immature soil. An extensive spectral mapping of the Reiner-gamma formation with high spatial resolution (0.2 km/pixel) was produced. This result was obtained at the 2-meter aperture telescope of Pic-du-Midi (France). The data sets consist in repeated runs comprising 10 selected narrow-band images (from 0.4 to 1.05 micron). The analysis of these data suggests that such a type of immature material includes not more than 28% of agglutinattes. We find the model grain size of fine fraction to be 40 micrometers grain size, of more immature soil 400-500 micrometers, and of the formation soil 120-150 micrometers. The exposure age of the Reiner-gamma immature soil is equal about 10 x 10(exp 6) years.
Document ID
19950047964
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Shevchenko, V. V.
(Sternberg Astronomical Inst. Moscow, Russia)
Pinet, P.
(Observatoire de Midi-Pyresnees Toulouse, France)
Chevrel, S.
(Observatoire de Midi-Pyresnees Toulouse, France)
Date Acquired
August 16, 2013
Publication Date
July 1, 1993
Publication Information
Publication: Astronomicheskii Vestnik
Volume: 27
Issue: 4
ISSN: 0320-930X
Subject Category
Lunar And Planetary Exploration
Accession Number
95A79563
Distribution Limits
Public
Copyright
Other

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