Abstract:

The lunar rock types are the key to the understanding of their formation history and lunar magma ocean evolution. With the increasing of datasets from lunar explorations, the applications of recent lunar remotely sensed data for the understanding of lunar history are of high priority. In this study, we further calibrated the Chang’E-1 IIM dataset and obtained the lunar FeO and TiO₂, Mgnumber mapping results. Eight rock types including the ferroan anorthosite, Mgsuite, KREEP, and mare basalts of 5 levels of TiO₂ content are mapped for the Mare ImbriumMare Frigoris  region (LQ-4) based on the survey of previous classifications of lunar rock types according to the lunar compositions derived from the Chang’E-1 IIM data. The rock distribution and petrogenisis of LQ-4 region is also discussed in relation to the isotopic dating of lunar rocks.  This region includes a series of mare basalt lava flows, whose stratigraphical relationships are of great values for the study of the evolution of extrusive magmas. In addition, we estimated the FeO, TiO₂ and Mgnumber of Chang’E-3 landing site, which could be validated by the in situ measurements of Yutu Rover.

Key words: Key words: moon, rock types, classification, IIM, Chang’E-1