Geotectonic evolution of lunar LQ-4 region based on multisource data

The Sinus Iridum region, the first choice for Chinaʹs “Lunar Exploration Project” is located at the center of the lunar LQ-4 area and is the site of Changʹe-3 (CE-3)ʹs soft landing. To make the scientific exploration of Changʹe-3 more targeted and scientific, and to obtain a better macro-level understanding of the geotectonic environment of the Sinus Iridum region, the tectonic elements in LQ-4 region have been studied and the typical structures were analyzed statistically using data from CE-1, Clementine, LRO and Lunar Prospector missions. Also, the mineral components and periods of mare basalt activities in the study area have been ascertained. The present study divides the tectonic units and establishes the major tectonic events and sequence of evolution in the study area based on morphology, mineral constituents, and tectonic element distribution.