--- title: "Mars Soil Classification System Developed for Future Exploration" url: https://newscentral.site/mars-soil-classification-system-developed-for-future-exploration/ language: en publisher: "News Central Site" section: "Science" published: 2026-10-16T20:40:06.000Z updated: 2026-10-17T09:40:44.757Z id: d9b505e0-c445-479d-bc81-0a2d056c7a64 source: "Phys.org https://phys.org/news/2026-10-comprehensive-mars-soil-classification-framework.html" attribution: "Link to https://newscentral.site/mars-soil-classification-system-developed-for-future-exploration/ and name News Central Site when you quote or summarize this story." --- # Mars Soil Classification System Developed for Future Exploration A new classification system has been developed to categorize Martian soils into different types based on their properties. A groundbreaking study has been conducted on Mars soil classification by a Ph.D. student at the University of Sydney. The research aims to provide a framework for scientists to compare Martian landscapes and identify suitable locations for future exploration and habitation. The classification system proposes a new term, "areths, derived from Ares, the Greek name for Mars. This innovation is expected to help researchers understand how different Martian soils relate to one another and where they are found. Published in the journal CATENA, the research utilized orbital observations and models to classify nearly 800 million locations across Mars into a hierarchy of 2,000 soil classes. A global map was also presented, highlighting the distribution of these soil classes on the Red Planet. This is the first time a classification system of this scale has been developed for Martian soils, said Daniel Irving, the lead researcher from the Sydney Institute of Agriculture and the Faculty of Science. The development of a comprehensive classification system for Martian soils is a crucial step in understanding the Red Planet's geology and paving the way for future exploration and even farming. The Provisional Polythetic Areth Classification System (PPACS) categorizes Martian soils into 10 major realms, 100 assemblages, and over 2,000 detailed forms based on properties such as texture, mineralogy, pH, and profile thickness. This extensive framework provides researchers with a precise understanding of the diverse soil types found on Mars. A detailed map covering approximately 92% of the Martian surface accompanies the classification system. This visual representation enables scientists to visualize the distribution of various soil types across the planet's terrain. By studying this map, researchers can better comprehend the geological and geographical characteristics of different regions. Growing crops on Mars has long fascinated people around the world, as depicted in films like The Martian," where astronaut Mark Watney grows potatoes in Martian soil using ingenuity and resourcefulness. While a greenhouse on Mars remains a future possibility, Irving's research provides a scientific foundation for understanding which Martian soils could support plant growth under controlled conditions. One of the key findings from this study is that certain soil classes exhibit characteristics essential for plant production, such as water-holding capacity, pH, profile thickness, clay content, and gravel content. Specifically, the Nohibareth soil class emerged as a promising candidate, scoring 0.93 on the study's grading scale. The study's classification system has identified a promising candidate for future exploration and potential farming on Mars - the Nohibareth soil class. This class is characterized by a pH of 6.8, high clay content, minimal sand or gravel, and an estimated water-holding capacity of 202 millimeters per meter. Nohibareth soils are primarily found in the midlatitudes of Mars, specifically around Tharsis, central Arabia Terra, and Elysium Planitia. These areas account for only a small fraction of the planet's surface, covering approximately 0.14%. While these regions show promise for further investigation, it is essential to note that they are not being considered as potential greenhouse sites at this stage. The initial assessment has highlighted several limitations in the properties of Martian soil. Among the tested classes, water-holding capacity emerged as a significant limiting factor, with 73% of forms studied showing suboptimal performance. Classes within the Fareth to Mareth realms scored particularly low on this criterion, reflecting less favorable combinations of the assessed properties. The researchers emphasize that growing crops directly in Martian soil is still not feasible without controlled environments, water, nutrients, and treatment of potentially harmful substances. To advance this work, scientists will need to conduct further research on Earth by creating or obtaining Mars-like substrate mixtures representing the mapped classes. The next step in studying Martian soil involves conducting experiments on Earth using substrate mixtures that mimic the conditions found on Mars. These experiments will allow scientists to compare how different plant species grow and thrive in various soil types, as well as assess the water usage and treatment requirements for each mixture. The goal is to create a framework for understanding the complex interactions between Martian soil and the environment, which can be used to inform future exploration and potential farming efforts. The current map of Martian soil classes does not take into account several key factors, including perchlorate toxicity, nitrogen availability, and depth profiles. As direct measurements from Mars become more accurate, the classification system will need to be revised to reflect these new findings. Research on Martian soils may also have practical applications for understanding challenging landscapes on Earth, such as the Atacama Desert and polar regions, where soil conditions are often harsh and unforgiving. The new framework for Martian soil classification offers a comprehensive system that can be applied to various terrestrial environments as well. Research suggests that understanding Martian soils can also provide valuable insights into challenging landscapes on Earth, such as deserts and polar regions. This framework has the potential to facilitate future human exploration and even farming on Mars by providing a standardized way of categorizing Martian soil types. The classification system is based on a hierarchical structure that takes into account various physical and chemical properties of the soil. --- Source: [Phys.org](https://phys.org/news/2026-10-comprehensive-mars-soil-classification-framework.html) Published by News Central Site: https://newscentral.site/mars-soil-classification-system-developed-for-future-exploration/