Early Mars hydrology: 2. Hydrological evolution in the Noachian and Hesperian epochs

  title={Early Mars hydrology: 2. Hydrological evolution in the Noachian and Hesperian epochs},
  author={Jeffrey C. Andrews‐Hanna and Kevin W. Lewis},
  journal={Journal of Geophysical Research},
[1] Mars was warmer and wetter during the early to middle Noachian, before a hydrologic and climatic transition in the late Noachian led to a decrease in erosion rates, a change in valley network morphology, and a geochemical shift from phyllosilicate to sulfate formation that culminated in the formation of widespread sulfate-rich sedimentary deposits in Meridiani Planum and the surrounding Arabia Terra region. This secular evolution was overprinted by episodic and periodic variability, as… 

The climate history of early Mars: insights from the Antarctic McMurdo Dry Valleys hydrologic system

Abstract The early climate of Mars (Noachian Period, the first ~20% of its history) is thought to differ significantly from that of its more recent history (Amazonian Period, the last ~66%) which is

Reconstructing the past climate at Gale crater, Mars, from hydrological modeling of late‐stage lakes

The sedimentary deposits in Gale crater may preserve one of the best records of the early Martian climate during the Late Noachian and Early Hesperian. Surface and orbital observations support the

Distribution of Early, Middle, and Late Noachian cratered surfaces in the Martian highlands: Implications for resurfacing events and processes

Most of the geomorphic changes on Mars occurred during the Noachian Period, when the rates of impact crater degradation and valley network incision were highest. Fluvial erosion around the

The geology of ancient fluvial and lacustrine systems in Arabia Terra and Melas Chasma, Mars

  • J. Davis
  • Environmental Science, Geography
  • 2017
Fluvial and lacustrine processes were abundant on early Mars. However, key questions remain about the extent of these processes and the climate in which they formed. This thesis examines two regions

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 of

Asynchronous formation of Hesperian and Amazonian‐aged deltas on Mars and implications for climate

Most fluvial and lacustrine landforms on Mars are thought to be old and have formed more than ~3.8 Gyr ago, in the Noachian period. After a major climatic transition, surface liquid water became less

Geochemistry constrains global hydrology on Early Mars

The Dallol Geothermal Area, Northern Afar (Ethiopia)—An Exceptional Planetary Field Analog on Earth

An overview of the Dallol volcanic area and its hydrothermal field that integrates previous literature with observations and results obtained from field surveys and monitoring coupled with sample characterization highlights its exceptional potential as a planetary field analog as well as a site for future astrobiological and exploration programs.



Meridiani Planum and the global hydrology of Mars

It is demonstrated that Meridiani is one of the few regions of currently exposed ancient crust predicted to have experienced significant groundwater upwelling and evaporation, and the evaporite formation coincided with a transition to more arid conditions that increased the relative impact of a deep-seated, global-scale hydrology on the surface evolution.

Layered mantling deposits in northeast Arabia Terra, Mars: Noachian-Hesperian sedimentation, erosion, and terrain inversion

[1] Thick, layered mantling deposits of different ages occur in several nonpolar regions of Mars and are thought to represent volcanic ash and/or climate-related ice-dust deposition. One such deposit

An Intense Terminal Epoch of Widespread Fluvial Activity on Early Mars: 2. Increased Runoff and Paleolake Development

[1] To explain the much higher denudation rates and valley network development on early Mars (>∼3.6 Gyr ago), most investigators have invoked either steady state warm/wet (Earthlike) or cold/dry

Drainage basin evolution in Noachian Terra Cimmeria, Mars

[1] Geomorphic mapping of a ∼1 million square kilometer section of Terra Cimmeria on Mars (1:1M scale) indicates that prolonged, intense fluvial erosion occurred during the period of heavy

The Evolution of the Martian Hydrosphere: Implications for the Fate of a Primordial Ocean and the Current State of the Northern Plains

Abstract In this paper we consider the hydraulic and thermal conditions that gave rise to the elevated source regions of the Late Hesperian outflow channels and explore their implications for the

An intense terminal epoch of widespread fluvial activity on early Mars: 1. Valley network incision and associated deposits

[1] We present evidence that a final epoch of widespread fluvial erosion and deposition in the cratered highlands during the latest Noachian or early to mid-Hesperian was characterized by integration

The case for rainfall on a warm, wet early Mars

[1] Valley networks provide compelling evidence that past geologic processes on Mars were different than those seen today. The generally accepted paradigm is that these features formed from

Implications for hydrologic processes on Mars from extensive bedrock outcrops throughout Terra Meridiani

Remote sensing data is used to show that the light-toned outcrops at the landing site are not a local phenomenon and that 3 × 105 km2 of this material is exposed over 20° of longitude, indicating the extended presence of surface or near-surface water over a large region of Mars.

Roaming zones of precipitation on ancient Mars as recorded in valley networks

[1] The 10 largest valley networks in the Terra Sabaea, Arabia Terra, and Meridiani Planum regions of Mars were mapped, crater age dated, and analyzed by geomorphology, stream order, and drainage

Erosion rates at the Mars Exploration Rover landing sites and long‐term climate change on Mars

[1] Erosion rates derived from the Gusev cratered plains and the erosion of weak sulfates by saltating sand at Meridiani Planum are so slow that they argue that the present dry and desiccating