Global distribution and classification of Martian sulfate deposits

Key Points

• This research aims to systematically investigate the distribution and classification of sulfate deposits on Mars.
• Utilized orbital spectral data and in-situ measurements for data collection.
• Classified Martian sulfates into categories based on their formation environments: evaporite, ice-related, hydrothermal, diagenetic, and potential polygenetic types.
• Conducted a global-scale study to summarize spatial distribution patterns and mineral characteristics.
• Identified major sulfate-rich areas on Mars with specific mineralogical features.
• Established a comprehensive dataset of sulfate distributions across the Martian surface, indicating important geochemical processes.
• Highlighted key scientific questions regarding sulfate source, formation and evolution timescales, and in-situ preservation mechanisms.