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Geological History of Southern Gorgonum Chaos, Mars: A Story of Water and Wind

Haack, David and Adeli, Solmaz and Hauber, Ernst (2021) Geological History of Southern Gorgonum Chaos, Mars: A Story of Water and Wind. Journal of Geophysical Research: Planets, 126 (9), e2021JE006903. Wiley. doi: 10.1029/2021JE006903. ISSN 2169-9097.

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Official URL: https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2021JE006903


Gorgonum Chaos is part of the Eridania paleolake in Terra Sirenum and displays a number of prominent light-toned morphological features that bear a record of the regional climatic conditions throughout most of Martian history. Based on an integrated analysis of orbital data, we mapped a 1,500 km2 area in the southeast of Gorgonum Chaos. Morphologic, spectroscopic, and stratigraphic analyses were used to determine age and composition of the main geological units in the area. We identified four major geological units with decreasing content of hydrated minerals from the oldest to the youngest units, which were completely free of hydrated minerals. In the study area, phyllosilicate-rich Noachian units compose the majority of the basin floor. Deposits enriched with evaporites were formed around the Noachian/Hesperian transition and erosion created prominent inverted morphologies. Loess-like material without significant amounts of hydrated minerals was deposited until the late Hesperian. The youngest unit is an Amazonian layer free of hydrated minerals that originated from volcanic activities. This succession of minerals reflects the transition from more humid climatic conditions with the ability to sustain liquid water on the planet's surface during the Noachian to the hyper-arid Amazonian environment we observe currently on Mars.

Item URL in elib:https://elib.dlr.de/144267/
Document Type:Article
Title:Geological History of Southern Gorgonum Chaos, Mars: A Story of Water and Wind
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Haack, DavidUNSPECIFIEDhttps://orcid.org/0000-0002-8308-2528UNSPECIFIED
Adeli, SolmazUNSPECIFIEDhttps://orcid.org/0000-0001-9972-409XUNSPECIFIED
Hauber, ErnstUNSPECIFIEDhttps://orcid.org/0000-0002-1375-304XUNSPECIFIED
Date:20 August 2021
Journal or Publication Title:Journal of Geophysical Research: Planets
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:Yes
Page Range:e2021JE006903
Keywords:Mars Climate Hydrated Minerals Erosion
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Exploration
DLR - Research area:Raumfahrt
DLR - Program:R EW - Space Exploration
DLR - Research theme (Project):R - Moon and Mars Exploration Studies (MosES)
Location: Berlin-Adlershof
Institutes and Institutions:Institute of Planetary Research > Planetary Geology
Deposited By: Haack, David
Deposited On:05 Oct 2021 07:59
Last Modified:28 Feb 2023 14:57

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