Impact craters are a type of important geological landforms on the surfaces of solid planets such as the Moon, Mars and Mercury. The impact ejecta provides valuable geological information for understanding the impacting process and regional geological evolution of the planet. In this study, the ejecta of Von Karman crater was investigated by combining Lunar Reconnaissance Orbiter (LRO) image data, Lunar Orbiter Laser Altimeter (LOLA) topographic data and Clementine multi-spectral data. Our results indicate that most of the ejecta with in Von Karman crater have been seriously alternated. The continuous ejecta that minor affected by other impact craters were selected and analyzed by using the Crater. Tools, based on Wide Angle Camera (WAC) and Terrain Camera (TC) image data. Then, the dating analysis was carried out, yielded an age of 4.15 Ga (i.e., pre. Nectarian) for Von Karman crater. Our studies demonstrate that multi-source data is useful in the identification of ejecta and the necessity of excluding the influence of surrounding ejecta in the dating analysis.

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