University of Sydney researchers map Martian soils

Researchers at the University of Sydney have developed the first comprehensive classification system and map for Martian soils. Led by PhD student Daniel Irving, the study utilizes orbital observations and models to categorize nearly 800 million locations across approximately 92 percent of the Martian surface.

The new framework, known as the Provisional Polythetic Areth Classification System (PPACS), organizes Martian soils into 10 major “realms,” 100 “assemblages,” and 2,000 detailed “forms.” This system integrates various properties, including texture, mineralogy, pH, and profile thickness, into a single cohesive model to help scientists understand the relationships between different soil types.

In testing the system for potential agricultural use, researchers identified a soil class named “Nohibareth” as the most promising candidate, scoring 0.93 on a scale of zero to one. While Nohibareth shows characteristics favorable for plant production, researchers cautioned that future habitation would still require controlled environments, water, nutrients, and the treatment of potentially harmful substances.