Cited by 242Planetary Science and ExplorationAstro and Planetary ScienceGeological formations and processes

Geomorphic evolution of the Martian highlands through ancient fluvial processes

Craddock, Robert A., Maxwell, Ted A.·1993·Journal of Geophysical Research: Planets

Abstract

Craters in the Martian highlands are preserved in various stages of degradation. As a result of an erosional process active from the Middle Noachian (4.40–3.92 b.y.) through the Hesperian (3.55–1.8 b.y.), ejecta associated with fresh impact craters became etched, hummocky, and dissected by runoff channels. With time, interior gullies became deeply incised and ejecta deposits were entirely removed. Infilling of the craters followed until, in some instances, the craters were completely buried. Only fluvial processes explain these morphologic variations, the size range of affected craters, and the size‐frequency distribution curves associated with these crater populations. Based on the number of superposed fresh impact craters, fluvial processes affecting the highlands ceased entirely by the end of the Hesperian. No correlation between cessation of degradation and latitude exists. However, a strong correlation exists between cessation of degradation and elevation. Degradation ended at higher elevations (e.g., 3–4 km; N [5]=∼200, Late Noachian) before lower elevations (e.g., 1–2 km; N[5]=∼180, Early Hesperian), suggesting that cessation was coupled to desiccation of the volatile reservoir and degassing of a 5–20 bar primordial atmosphere. Volatiles released to the surface by runoff channel formation and seepage may have been part of a complex hydrologic cycle that included periodic, heavy amounts of precipitation. Rainfall was principally responsible for degrading the highlands,…

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Crossref · 10.1029/92je02508

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Authors
Craddock, R. A., & Maxwell, T. A.
Venue
Journal of Geophysical Research: Planets
Published
1993-02-25
Volume
98
Issue
E2
Pages
3453-3468
ISSN
0148-0227 (ISSN-L)
OpenAlex
W2153889975
Cited by
242
References
81
Citations by year
2026: 1 · 2025: 2 · 2024: 6 · 2023: 4 · 2022: 9 · 2021: 3 · 2020: 6 · 2019: 9 · 2018: 16 · 2017: 6 · 2016: 9 · 2015: 7 · 2014: 11 · 2013: 6 · 2012: 8
FWCI
7.81
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Geophysical Research Atmospheres (publishedVersion)
  • Smithsonian Digital Repository (Smithsonian Institution) (submittedVersion)
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Planetary Science and Exploration
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Astro and Planetary Science
  • Physical Sciences › Earth and Planetary Sciences › Earth-Surface Processes › Geological formations and processes
Keywords
Martian highlands, fluvial erosion, gully incision, crater size-frequency distribution, Hesperian, Late Noachian, groundwater recharge, denudation rates, periglacial erosion

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