Geomorphology of Ius Chasma, Valles Marineris, Mars
نویسندگان
چکیده
منابع مشابه
Hydrated mineral stratigraphy of Ius Chasma, Valles Marineris
New high-resolution spectral and morphologic imaging of deposits on walls and floor of Ius Chasma extend previous geomorphic mapping, and permit a new interpretation of aqueous processes that occurred during the development of Valles Marineris. We identify hydrated mineralogy based on visible-near infrared (VNIR) absorptions. We map the extents of these units with CRISM spectral data as well as...
متن کاملHydrated mineral stratigraphy in Ius Chasma, Valles Marineris
Introduction: Ius Chasma is a linear trough in western Valles Marineris, formed by horst and graben structures and mass wasting [e.g. 1-6]. Sulfates and other hydrated minerals are found in thin floor deposits, which differs from the thick sulfate-bearing Interior Layered Deposits (ILDs) found in the basinal chasmata, like Capri and Melas. Kieserite (MgSO4 · H2O), a polyhydrated sulfate (PHS), ...
متن کاملSalt tectonics and collapse of Hebes Chasma, Valles Marineris, Mars
A photogeologic and physical modeling study indicates that Hebes Chasma, Mars, formed by collapse of the megaregolith. Local heating facilitated drainage of ~105 km3 of brines and entrained particulates through fractures in the chasma fl oor and into a regional aquifer. A megaregolith rich in salts and water is implied by massive, low-gradient allochthonous fl ows that terminate in deep pits an...
متن کاملLakes in Valles Marineris, Mars
Introduction: The question whether the Valles Marineris harbored lakes has been debated ever since McCauley [1] proclaimed that the horizontality and lateral continuity of the interior layered deposits (ILD) suggested that they were deposited in lakes. Recent evidence, summarized here, sheds new light on this old problem. Morphology and composition: The increasingly better resolution of images ...
متن کاملSulfate and hematite stratigraphy in Capri Chasma, Valles Marineris
Introduction: Analysis of OMEGA and CRISM spectral data for sulfate-rich Interior Layered Deposits (ILDs) in Valles Marineris has revealed complex assemblages of iron oxides and multiple sulfates [1-7]. We have been developing stratigraphic assemblages to assess the similarities and differences among chasma [3, 5, 7]. Here we present sulfate and iron oxide stratigraphy within the central ILD of...
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ژورنال
عنوان ژورنال: Journal of Maps
سال: 2017
ISSN: 1744-5647
DOI: 10.1080/17445647.2017.1296790