Fig. 1: Landing site, traverse map, and MI images of six VBF-ZR targets.
From: Aqueous alteration of the Vastitas Borealis Formation at the Tianwen-1 landing site
a Distribution map of the VBF unit on the Northern Plains of Mars. The map base is a Mars Orbiter Laser Altimeter (MOLA) shaded-relief image. b Traverse map of the ZR rover up to sol 300 overlain on the base image of High-Resolution Imaging Camera (HiRIC) data. The HiRIC raw data is provided by China National Space Administration. The yellow points represent the locations of MarSCoDe targets, and the red points indicate the locations of six VBF-ZR targets discussed in this study. c–e The images of VBF-ZR-01, VBF-ZR-21, and VBF-ZR-28 targets collected by the Multispectral Camera (R 650 nm, G 525 nm, B 480 nm). f The MI images of VBF-ZR-01 target (the first target detected at the landing site, 64 × 64 pixels), g, h coarse-grained soils (VBF-ZR-09 at TAR1, VBF-ZR-17 at TAR2, 1024 × 1024 pixels), i fine-grained soils (VBF-ZR-26 at TAR3, 1024 × 1024 pixels), j a layered rock (VBF-ZR-21, 1024 × 1024 pixels), and k a coherent rock (VBF-ZR-28 at TAR4, 1024 × 1024 pixels). In these MI images, the red cross indicates the laser-ablated crater.
