Evidence for ponding and catastrophic floods in central Valles Marineris, Mars

  title={Evidence for ponding and catastrophic floods in central Valles Marineris, Mars},
  author={Keith P. Harrison and Mary G. Chapman},
Abstract The Valles Marineris canyon system of Mars is closely related to large flood channels, some of which emerge full born from chaotic terrain in canyon floors. Coprates Chasma, one of the largest Valles Marineris canyons, is connected at its west end to Melas Chasma and on its east end to chaotic terrain-filled Capri and Eos Chasmata. The area from central Melas to Eos Chasmata contains a 1500 km long and about 1 km deep depression in its floor. Despite the large volumes of groundwater… Expand
Episodic ponding and outburst flooding associated with chaotic terrains in Valles Marineris
The Valles Marineris canyons are among the deepest of topographic depressions on Mars. As such, they may be expected to have served as sinks for a variety of mobile materials, including water,Expand
Fill and spill of giant lakes in the eastern Valles Marineris region of Mars
The existence of Hesperian age (3.7–3.4 Ga) surface water bodies on Mars is a contentious issue, often conflicting with favored climate models. Extensive lakes are proposed to have filled parts ofExpand
Lakes in Valles Marineris
The Valles Marineris is a large system of troughs extending just south of the Martian equator from about longitude 250° E to 320° E. They trend approximately N 75° W for a distance of about 4000 km,Expand
The case against vast glaciation in Valles Marineris, Mars
Abstract The Valles Marineris of Mars form the largest system of interconnected canyons in the Solar System, where morphological, mineralogical, and structural evidence of widespread glaciation hasExpand
Amazonian volcanism inside Valles Marineris on Mars
The giant trough system of Valles Marineris is one of the most spectacular landforms on Mars, yet its origin is still unclear. Although often referred to as a rift, it also shows some characteristicsExpand
Did the martian outflow channels mostly form during the Amazonian Period
Simud, Tiu, and Ares Valles comprise some of the largest outflow channels on Mars. Their excavation has been attributed variously to (or a combination of) erosion by catastrophic floods, glaciers,Expand
Is Kasei Valles (Mars) the largest volcanic channel in the solar system
Abstract With a length of more than 2000 km and widths of up to several hundred kilometers, Kasei Valles is the largest outflow system on Mars. Superficially, the scabland-like character of KaseiExpand
Regionally compartmented groundwater flow on Mars
[1] Groundwater flow on Mars likely contributed to the formation of several types of morphologic and mineralogic features, including chaotic terrains, valley networks, Meridiani Planum geologic unitsExpand
[1] Many Hesperian outflow channels head at elevations compatible with aquifer recharge beneath the Martian south polar cap, and such channels are widely interpreted as the products of this recharge.Expand
Chaos terrain, storms, and past climate on Mars
[1] We model the atmospheric response to a chaos-forming event at Juventae Chasma, north of Valles Marineris, Mars, using the Mars Regional Atmospheric Modeling System (MRAMS). Interactions betweenExpand


Evidence that floodwaters filled and overflowed Capri Chasma, Mars
[1] Erosional features on a plateau in the Valles Marineris provide evidence that a lake filled Capri Chasma until it overflowed its eastern rim, carving two large spillover channels. The floodwatersExpand
Multiple flooding events in Martian outflow channels
[1] The large outflow channels of Chryse Planitia, Mars, are thought to have been carved by floodwaters discharged from an aquifer beneath a confining cryosphere. However, conventional models ofExpand
formation and evolution of the chaotic terrains by subsidence and magmatism : Hydraotes Chaos, Mars.
The origin of the martian chaotic terrains is still uncertain; and a variety of geologic scenarios have been proposed. We provide topographic profiles of different chaos landscapes, notably AureumExpand
Complex depositional systems in Hydraotes Chaos, Mars: An example of sedimentary process interactions in the Martian hydrological cycle
Hydraotes Chaos is a complex basin located between the equatorial areas of chasma, east of Valles Marineris and the Chryse basin. The interactions in time and space of several sedimentary processesExpand
Topography of Valles Marineris: Implications for erosional and structural history
Compilation of a simplified geologic/geomorphic map onto digital terrain models of the Valles Marineris permitted an evaluation of elevations in the vicinity of the troughs and the calculation ofExpand
Landslides in the Valles Marineris, Mars.
Large landslides in the Martian equatorial troughs have been investigated with respect to morphology, geologic structure of the troughs, time of emplacement, similarity to terrestrial landslides, andExpand
Evidence for late Hesperian lacustrine activity in Shalbatana Vallis, Mars
[1] An intravalley paleolake (more than 400 m deep) was detected along the course of Shalbatana Vallis from the evidence of shorelines and the occurrence of a few fan-delta deposits (including aExpand
Morphology, evolution and tectonics of Valles Marineris wallslopes (Mars)
Abstract Hillslopes up to 11 km in height can be found along the walls of the Valles Marineris troughs. The widest and deepest troughs are grabens, in which tectonics probably exerted the primaryExpand
Groundwater‐controlled valley networks and the decline of surface runoff on early Mars
[1] Fluvial erosion on early Mars was dominated by valley networks created through a combination of groundwater processes and surface runoff. A reduced greenhouse effect due to CO 2 loss, togetherExpand
The Martian hydrologic system: Multiple recharge centers at large volcanic provinces and the contribution of snowmelt to outflow channel activity
Abstract Global recharge of the martian hydrologic system has traditionally been viewed as occurring through basal melting of the south polar cap. We conclude that regional recharge of a groundwaterExpand