moonThe two youngest time stratigraphic units on the Moon need a new definition. This is provided by the optical maturity maps of rays, derived from Clementine multispectral data and calibrated with lunar sample analyses. This study is conducted by B. Ray Hawke (University of Hawai’i) and colleagues at the University of Hawai’i, NovaSol, Cornell University, National Air and Space Museum, and Northwestern University. It has been reported by Linda M. V. Martel that defying an old thinking, scientists have claimed that the mere presence of crater rays is not a reliable indicator that the crater is young. They further advocate that the working definition of the Copernican/Eratosthenian (C/E) boundary should be reconsidered. To determine the origin and composition of selected lunar ray segments, the team used Earth-based spectral and radar data with FeO, TiO2, and optical maturity maps derived from Clementine UVVIS images.



Via: PSRD- Hawaii