Physics
Scientific paper
Apr 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978georl...5..313a&link_type=abstract
Geophysical Research Letters, vol. 5, Apr. 1978, p. 313-316.
Physics
1
Lunar Geology, Lunar Maria, Lunik Lunar Probes, Spectral Reflectance, Stratigraphy, Lunar Albedo, Lunar Soil, Lunar Surface, Remote Sensors, Moon, Crisium, Mare, Luna 24 Mission, Picard, Peirce, Craters, Spectra, Reflectivity, Telescopic Observations, Samples, Lunar, Topography, Geology, Mapping
Scientific paper
Spectral reflectance measurements of five Luna 24 samples and new telescopic reflectance spectra of 10-20 km areas of seven sites in Mare Crisium have been used to calibrate multispectral images of mare units. Based on these data, three major mare units are defined in the Crisium basin and their stratigraphy is interpreted. The oldest mare unit is exposed in the ejecta of the craters Picard and Peirce and along the outer edge of the southeastern part of the basin. The next younger unit includes the Luna 24 site and generally follows a topographic annulus along the basin margin. The youngest mare unit occupies the central part of the basin. It is concluded that subsidence occurred throughout the emplacement of mare units, including extensive warping and downfaulting of the inner part of the Crisium basin.
Adams Barclay J.
Head James W.
McCord Th. B.
Pieters Carle
Zisk Stan H.
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