Primary centers and secondary concentrations of tectonic activity through time in the western hemisphere of Mars

Anderson, Robert C.; Dohm, J. M.; Golombek, M. P.; Haldemann, A. F. C.; Franklin, B. J.; Tanaka, Kenneth L.; Lias, J. H.; Peer, B. J.

doi:10.1029/2000je001278

Cited by 316 publications

(309 citation statements)

References 35 publications

Supporting

Mentioning

281

Contrasting

Order By: Relevance

“…Detailed comparative studies of other more recently active fluvial-volcanic systems, such as Athabasca Valles (Jaeger et al, 2007(Jaeger et al, , 2010, may aid in determining the extent to which repeated fluvial and volcanic activity has extended into the Amazonian Period. Comparing the timing and global distribution of these events may also provide insight into whether or not this activity has occurred within isolated systems, or has instead been associated with high-volume, planetary-scale volcanic pulses (Anderson et al, 2001;Wilson et al, 2001;Neukum et al, 2010).…”

Section: Discussionmentioning

confidence: 99%

Episodes of fluvial and volcanic activity in Mangala Valles, Mars

Keske

Hamilton

McEwen

et al. 2015

Icarus

View full text Add to dashboard Cite

A new mapping-based study of the 900-km-long Mangala Valles outflow system was motivated by the availability of new high-resolution images and continued debates about the roles of water and lava in outflow channels on Mars. This study uses photogeologic analysis, geomorphic surface mapping, cratering statistics, and relative stratigraphy. Results show that Mangala Valles underwent at least two episodes of fluvial activity and at least three episodes of volcanic activity during the Late Amazonian. The occurrence of scoured bedrock at the base of the mapped stratigraphy, in addition to evidence provided by crater retention ages, suggests that fluvial activity preceded the deposition of two of the volcanic units. Crater counts performed at 30 locations throughout the area have allowed us to construct the following timeline: (1) formation of Noachian Highlands and possible initial flooding event(s) before ~1 Ga, (2) emplacement of Tharsis lava flows in the valley from ~700 to 1000 Ma, (3) a megaflooding event at ~700-800 Ma sourced from Mangala Fossa, (4) valley fill by a sequence of lava flows sourced from Mangala Fossa ~400-500 Ma, (5) another megaflooding event from ~400 Ma, (6) a final phase of volcanism sourced from Mangala Fossa ~300-350 Ma, and (7) emplacement of eolian sedimentary deposits in the northern portion of the valley ~300 Ma. These results are consistent with alternating episodes of aqueous flooding and volcanism in the valles. This pattern of geologic activity is similar to that of other outflow systems, such as Kasei Valles, suggesting that there is a recurring, and perhaps coupled, nature of these processes on Mars.

show abstract

Section: Discussionmentioning

confidence: 99%

Episodes of fluvial and volcanic activity in Mangala Valles, Mars

Keske

Hamilton

McEwen

et al. 2015

Icarus

View full text Add to dashboard Cite

show abstract

“…Noachian-Early Hesperian (stages 1-3 of Tharsis development; Dohm and Tanaka, 1999) tectonism associated with the early development of Tharsis, as well as pre-Tharsis activity, is much more complex, diverse, and dense when compared to its Late Hesperian and Amazonian (stages 4-5) development, when the giant shield volcanoes were forged (Anderson et al, 2001;Dohm et al, 2001a). The ancient Thaumasia highlands mountain range (Figs.…”

Section: Introductionmentioning

confidence: 99%

“…Similar to the rest of the Thaumasia highlands, it records rugged terrain, complex structure, and possibly a magnetic signature. It has been identified as a primary center of Noachian tectonism in the western hemisphere of Mars through the evaluation of more than 25,000 tectonic structures (including fault segments) in time and space using digital structural mapping, quantification, and statistical techniques (Anderson et al, 2001).…”

Section: Introductionmentioning

confidence: 99%

New evidence for a magmatic influence on the origin of Valles Marineris, Mars

Dohm

Williams

Anderson

et al. 2009

Journal of Volcanology and Geothermal Research

Self Cite

View full text Add to dashboard Cite

“…(2) A center of tectonism, which includes the greatest percentage of faults preserved in Noachian materials (Anderson et al, 2001). (3) A distinct spectroscopic signature, including Fe/Mg-rich hydrated phyllosilicates, when compared to the well-defined lava flows of Syria and Solis Planae.…”

Section: Summary and Implicationsmentioning

confidence: 99%

“…Critically, over eight hundred segments of faults are radial about the primary center (Anderson et al, 2001) (Fig. 6).…”

Section: Introductionmentioning

confidence: 99%