Imperial College London
Professor Sanjeev Gupta

ProfessorSanjeevGupta

Faculty of Engineering, Department of Earth Science & Engineering

Professor of Earth Science
 
 
 
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Contact

 

+44 (0)20 7594 6527s.gupta

 
 
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Location

 

Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Davis:2019:10.1029/2019je005976,
author = {Davis, JM and Gupta, S and Balme, M and Grindrod, PM and Fawdon, P and Dickeson, ZI and Williams, RME},
doi = {10.1029/2019je005976},
journal = {Journal of Geophysical Research: Planets},
pages = {1913--1934},
title = {A diverse array of fluvial depositional systems in arabia terra: Evidence for midnoachian to early hesperian rivers on Mars},
url = {http://dx.doi.org/10.1029/2019je005976},
volume = {124},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Branching to sinuous ridges systems, 100s of kilometers in length and comprising layered strata, are present across much of Arabia Terra, Mars. These ridges are interpreted as depositional fluvial channels, now preserved as inverted topography. Here we use high resolution image and topographic datasets to investigate the morphology of these depositional systems and show key examples of their relationships to associated fluvial landforms. The inverted channel systems likely comprise indurated conglomerate, sandstone, and mudstone bodies, which form a multistorey channel stratigraphy. The channel systems intersect local basins and indurated sedimentary mounds, that we interpret as paleolake deposits. Some inverted channels are located within erosional valley networks, which have regional and local catchments. Inverted channels are typically found in downslope sections of valley networks, sometimes at the margins of basins, and numerous different transition morphologies are observed. These relationships indicate a complex history of erosion and deposition, possibly controlled by changes in water or sediment flux, or base level variation. Other inverted channel systems have no clear preserved catchment; likely lost due to regional resurfacing of upland areas. Sediment may have been transported through Arabia Terra towards the dichotomy and stored in local and regionalscale basins. Regional stratigraphic relations suggest these systems were active between the midNoachian and early Hesperian. The morphology of these systems is supportive of an early Mars climate which was characterized by prolonged precipitation and runoff.
AU  - Davis,JM
AU  - Gupta,S
AU  - Balme,M
AU  - Grindrod,PM
AU  - Fawdon,P
AU  - Dickeson,ZI
AU  - Williams,RME
DO  - 10.1029/2019je005976
EP  - 1934
PY  - 2019///
SN  - 2169-9097
SP  - 1913
TI  - A diverse array of fluvial depositional systems in arabia terra: Evidence for midnoachian to early hesperian rivers on Mars
T2  - Journal of Geophysical Research: Planets
UR  - http://dx.doi.org/10.1029/2019je005976
UR  - http://hdl.handle.net/10044/1/71460
VL  - 124
ER  -
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