{"title":"Geological Structure of the Upper Part of Nirgal Vallis, Mars","authors":"E. S. Cholovskaia, M. A. Ivanov","doi":"10.1134/S0038094625600374","DOIUrl":null,"url":null,"abstract":"<p>Photogeological analysis of the upper Nirgal Vallis area, located in the northwestern part of the Noachis Terra highland plain, has shown that there were at least two episodes of fluvial activity in this area: the Noachis, which resulted in the formation of channels on the slopes of the ancient volcano, and the Hesperian, which formed Her Desher and Nirgal Vallis and channels on the southern slope of the northwestern ancient uplift. Similar results for determining the absolute model age of the formation of channels and large craters may indicate that impact activity in this region was the main cause of episodic warming. In addition, glacial activity may have occurred in the study area during early Amazonian times, forming an erosion area near Her Desher Vallis.</p>","PeriodicalId":778,"journal":{"name":"Solar System Research","volume":"59 7","pages":""},"PeriodicalIF":0.8000,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Solar System Research","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S0038094625600374","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 0
Abstract
Photogeological analysis of the upper Nirgal Vallis area, located in the northwestern part of the Noachis Terra highland plain, has shown that there were at least two episodes of fluvial activity in this area: the Noachis, which resulted in the formation of channels on the slopes of the ancient volcano, and the Hesperian, which formed Her Desher and Nirgal Vallis and channels on the southern slope of the northwestern ancient uplift. Similar results for determining the absolute model age of the formation of channels and large craters may indicate that impact activity in this region was the main cause of episodic warming. In addition, glacial activity may have occurred in the study area during early Amazonian times, forming an erosion area near Her Desher Vallis.
期刊介绍：
Solar System Research publishes articles concerning the bodies of the Solar System, i.e., planets and their satellites, asteroids, comets, meteoric substances, and cosmic dust. The articles consider physics, dynamics and composition of these bodies, and techniques of their exploration. The journal addresses the problems of comparative planetology, physics of the planetary atmospheres and interiors, cosmochemistry, as well as planetary plasma environment and heliosphere, specifically those related to solar-planetary interactions. Attention is paid to studies of exoplanets and complex problems of the origin and evolution of planetary systems including the solar system, based on the results of astronomical observations, laboratory studies of meteorites, relevant theoretical approaches and mathematical modeling. Alongside with the original results of experimental and theoretical studies, the journal publishes scientific reviews in the field of planetary exploration, and notes on observational results.
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