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upper Noachian

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Histogram illustrating interpreted outgassing of SO 2  through time on Mars...
Published: 01 May 2012
Figure 2. Histogram illustrating interpreted outgassing of SO 2 through time on Mars. Lower estimate is based on volcanic mapping (CG; Craddock and Greeley, 2009 ). Upper estimate is based on total crust production and magmatic SO 2 production (H-R; Righter et al., 2009 ; Hirschmann
Journal Article
Journal: GSA Bulletin
Published: 02 May 2019
GSA Bulletin (2020) 132 (1-2): 17–30.
...Donald R. Lowe; Janice L. Bishop; Damien Loizeau; James J. Wray; Ross A. Beyer Abstract The presence of abundant phyllosilicate minerals in Noachian (>3.7 Ga) rocks on Mars has been taken as evidence that liquid water was stable at or near the surface early in martian history. This study...
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Journal Article
Journal: Geology
Published: 01 March 2008
Geology (2008) 36 (3): 195–198.
... megabreccia unconformably overlain by sediments deposited during two Noachian-age phases of aqueous activity. A lighter-toned lower unit exhibiting phyllosilicates was deposited in a long-lived, quiescent distal alluvial or lacustrine setting. An overlying darker-toned and often blocky upper unit drapes...
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Journal Article
Journal: Geology
Published: 01 October 2015
Geology (2015) 43 (10): 863–866.
... Noachian–early Hesperian, before or concurrent with valley network formation. While this is large compared to modern-day CO 2 reservoirs, the lack of additional, comparably sized post–late Noachian carbonate-bearing deposits on Mars indicates ineffective carbon sequestration in rock units over the past...
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Journal Article
Journal: Geology
Published: 01 September 2014
Geology (2014) 42 (9): 755–758.
...Gregory J. Retallack Abstract Fluviolacustrine sediments filling Gale Crater on Mars show two levels of former exposure and weathering that provide new insights into late Noachian (3.7 ± 0.3 Ga) paleoenvironments of Mars. Diagnostic features of the two successive paleosols in the Sheepbed member...
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Series: SEPM Special Publication
Published: 01 January 2012
DOI: 10.2110/pec.12.102.0119
EISBN: 9781565763135
... a better understanding of the diversity and bulk composition of the upper crust that acts as the ultimate source of sediment ( McSween et al. 2009 , Taylor and McLennan 2009 ). Recognition of the importance of clay mineralogy, especially in the Early to Middle Noachian, and identification of long–sought...
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Journal Article
Journal: Geology
Published: 01 February 2010
Geology (2010) 38 (2): 183–186.
... points in them are not significant. The most conservative approach is to ignore areas smaller than the largest smoothing radius, 15°. (The different smoothing radii do not affect the outcome of the cluster analysis significantly; see footnote 1 .) The measured gamma rays are produced in the upper...
FIGURES
Journal Article
Journal: Geology
Published: 01 October 2013
Geology (2013) 41 (10): 1115–1118.
... Opportunity at Meridiani Planum ( Zipfel et al., 2011 ). This rock was proposed to have been excavated from beneath the late Noachian and/or early Hesperian Meridiani plains by an impact ( Arvidson et al., 2006 ), which would require Bounce Rock to be Noachian (ca. 4 Ga). This tenuous stratigraphy would...
FIGURES
Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 01 December 2012
Lithosphere (2012) 4 (6): 553–593.
... of the outwash flows around the Tharsis rise (see Fig. 3A based on the work of Carr, 1996 ). A major problem with their inference is that many of their inferred Noachian outwash channels in fact flow over Hesperian and Amazonian units or have upper stream channels that can be traced to the younger rock units...
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Journal Article
Journal: GSA Bulletin
Published: 01 May 2004
GSA Bulletin (2004) 116 (5-6): 594–605.
... of a fold developed above the longer primary fault. The narrow antiform is interpreted to consist of two distinct folds, one surrounding the near- surface upper tip of the primary thrust and one surrounding a secondary fault. Slopes of the broader, primary fault-related fold, as well as the smaller fold...
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Journal Article
Journal: Geology
Published: 01 April 2006
Geology (2006) 34 (4): 285–288.
...J.W. Head; L. Wilson; J. Dickson; G. Neukum Abstract Two narrow, broadly arcuate, low ridges extend for 600–700 km in western Terra Tyrrhena, Mars, crosscut ancient Noachian terrain, and are associated with Early Hesperian plains, which cover ∼30% of Mars. Geological relationships suggest...
FIGURES
Journal Article
Journal: GSA Bulletin
Published: 28 August 2023
GSA Bulletin (2023)
...C.M. Caudill; G.R. Osinski; L.L. Tornabene; F.J. Longstaffe; D.K. McCarty; H.M. Sapers The presence of extensive clay minerals in the ancient Noachian terrains of Mars is often used to invoke past climatic conditions that were warmer and supported surface-stable liquid water. These clay-rich...
Journal Article
Published: 15 March 2021
Environmental Geosciences (2021) 28 (1): 43–52.
... tectonics, associated mountain building, and rock stratigraphy with that of our Earth. Based on the impact crater densities, the martian geological time scale has been divided into Pre-Noachian (4.5–4.1 Ga), Noachian Period (4.1–3.7 Ga), Hesperian (3.7–3.0 Ga), and Amazonian (3.0 Ga to present...
Journal Article
Journal: GSA Bulletin
Published: 01 May 2010
GSA Bulletin (2010) 122 (5-6): 644–657.
... Noachian terrains dating back to at least 4.0 Ga to very recent Amazonian units. Layered ejecta morphologies, central pits, and terrain softening all indicate the presence of substantial quantities of ice within the upper few kilometers of the Martian substrate. Variations of impact crater morphometry from...
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Journal Article
Journal: Geology
Published: 12 May 2022
Geology (2022) 50 (9): 981–985.
... in mechanically weaker substrates, high-latitude craters (suggesting that modern cryogenic processes may enhance sand production), and in Late Noachian and Early Hesperian craters (possibly hinting at increased erosion rates at that time). * E-mail: a.gunn@monash.edu 10 12 2021 20 03 2022 22...
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Image
Schematic history of martian magmatism. A: <span class="search-highlight">Noachian</span> era; wet mantle produce...
Published: 01 October 2013
Figure 3. Schematic history of martian magmatism. A: Noachian era; wet mantle produces voluminous high-SiO 2 , low-Th, shergottite-like magmas. B: Hesperian era; previously dehydrated mantle with magmatism focused into isolated upwellings. Melting of previously depleted mantle beneath thick crust
Journal Article
Journal: Geology
Published: 01 March 2003
Geology (2003) 31 (3): 271–274.
... of the southern highlands may be due to late Noachian–early Hesperian vertical loading of the northern lowlands. Fracturing and normal faulting along the boundary may be in response to bending stresses, while thrust faulting may result from a combination of stresses due to flexure, erosion, and global contraction...
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Journal Article
Journal: Geology
Published: 01 May 2012
Geology (2012) 40 (5): 419–422.
...Figure 2. Histogram illustrating interpreted outgassing of SO 2 through time on Mars. Lower estimate is based on volcanic mapping (CG; Craddock and Greeley, 2009 ). Upper estimate is based on total crust production and magmatic SO 2 production (H-R; Righter et al., 2009 ; Hirschmann...
FIGURES
Journal Article
Journal: Elements
Published: 01 June 2006
Elements (2006) 2 (3): 139–143.
... surrounding Argyre and Hellas ( Kargel 2004 ), lineated valley fills in the fretted troughs of the highlands/lowlands boundary north of Arabia Terra, and the polar regions, where the ice caps were much more extensive during portions of post-Noachian time. Huge glaciers marked the western flanks of the Tharsis...
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Image
Schematic diagram illustrating sequence of base-level change, cataract migr...
Published: 01 September 2010
Figure 4. Schematic diagram illustrating sequence of base-level change, cataract migration, and canyon evolution. A: Late Noachian–Early Hesperian overland floods are sourced from Hydapsis Chaos (white arrows) and are confluent with shallow precursor channels of Ares Vallis (black arrows). B