Chinese Academy of Sciences National Space Science Center website, researchers at the space center have made new progress on the early habitable climate of Mars.
One of the key unanswered scientific questions in planetary science is whether Mars' early climate was warm and wet or cold and dry. The wide distribution of water-bearing minerals and water flow on the surface of Mars suggests a long period of warm and wet climate in early Mars, whereas climate models suggest that Mars may have been cold and dry for a long period. The study of the features of the widely distributed sinuous ridges on Mars and the distribution of water-bearing minerals can provide important support for understanding this problem.
Liu Yang, a researcher at the National Space Science Center of the Chinese Academy of Sciences, and his team studied the ridges on the east side of Tempe Plateau, which lies between the north and south of Mars. They used Mars orbital remote sensing data such as CTX, HiRISE and CRISM to analyze the topography and mineral information in detail. The study found inverted impact craters and relatively smooth geomorphic units around the ridge, respectively, indicating that the area experienced intense erosion and surface remodeling events, IT Home learned
The ridges found in the area reveal a complex history of river and erosion around the ancient oceanic shoreline in northern Mars. The upper age limit of the ridges is in the Middle Noahian and they are located along the dichotomous boundary that may represent the existence of ancient oceans in northern Mars. The impact crater dating indicates that the ridge was formed no later than the Early Occidental of 3.6 billion years ago. Combined with the layered clay minerals about 20m thick found on both sides of the ridge, this indicates that there was a period of active current activity for about several tens of thousands of years before the Early Occidental. Mars in Noah ji to early age period of the western climate is warm and wet or cold arid problems has been controversial, if early Mars as cold and arid climate models predict, the formation of reverse channel belt indicates the possibility of the region by a volcanic eruption, meteorite impacts or rotation Angle change caused by intermittent but continues to warm weather events.