Impact‐induced hydrothermal activity on early Mars

  title={Impact‐induced hydrothermal activity on early Mars},
  author={O. Abramov and D. Kring},
  journal={Journal of Geophysical Research},
[1] We report on numerical modeling results of postimpact cooling of craters with diameters of 30, 100, and 180 km in an early Martian environment, with and without the presence of water. The effects of several variables, such as ground permeability and the presence of a crater lake, were tested. Host rock permeability is the main factor affecting fluid circulation and lifetimes of hydrothermal systems, and several permeability cases were examined for each crater. The absence of a crater lake… Expand

Paper Mentions

News Article
Numerical modeling of impact‐induced hydrothermal activity at the Chicxulub crater
Large impact events like the one that formed the Chicxulub crater deliver significant amounts of heat that subsequently drive hydrothermal activity. We report on numerical modeling of ChicxulubExpand
Impact cratering in H2O‐bearing targets on Mars: Thermal field under craters as starting conditions for hydrothermal activity
Abstract– We present a case modeling study of impact crater formation in H2O-bearing targets. The main goal of this work was to investigate the postimpact thermal state of the rock layers modified inExpand
Post Impact Hydrothermal Activity. Thermodynamic Simulations on the Chicxulub Crater and Habitability Assessment.
Large asteroid and comet impacts on terrestrial planets and moons deliver vast amounts of heat that drive hydrothermal activity. Such hydrothermal processes subsequently raise probabilities for lifeExpand
Boundary layer models of hydrothermal circulation on Mars and its relationship to geomorphic features
[1] We apply steady state boundary layer theory to single phase, dike-driven hydrothermal systems beneath the surface of Mars to provide estimates of the heat and liquid water outputs over a range ofExpand
Puncturing Mars: How impact craters interact with the Martian cryosphere
Abstract Geologic evidence suggests that the Martian surface and atmospheric conditions underwent major changes in the late Noachian, with a decline in observable water-related surface features,Expand
Impact-generated hydrothermal systems capable of forming phyllosilicates on Noachian Mars
The early history of the terrestrial planets was punctuated by a period of heavy bombardment. Frequent large impacts condensed in a short, 0.02–0.5-Ga-long time period resulted in heavily crateredExpand
Review of wet environment types on Mars with focus on duration and volumetric issues.
The results of this review show the necessity for more detailed analysis of conditions within geothermal heat-induced systems to reconstruct the conditions during weathering and mineral alteration, as well as to search for signs of reoccurring wet periods in ancient crater lakes. Expand
Gale Crater: Formation and post-impact hydrous environments
Abstract Gale Crater, the landing site of the 2011 Mars Science Laboratory mission, formed in the Late Noachian. It is a 150 km diameter complex impact structure with a central mound (Mount Sharp),Expand
Martian post-impact hydrothermal systems incorporating freezing
We simulate the evolution of post-impact hydrothermal systems within 45 km and 90 km diameter craters on Mars. We focus on the effects of freezing, which alters the permeability structure and fluidExpand
Probing the hydrothermal system of the Chicxulub impact crater
The recovered core shows the Chicxulub crater hosted a spatially extensive hydrothermal system that chemically and mineralogically modified ~1.4 × 105 km3 of Earth’s crust, a volume more than nine times that of the Yellowstone Caldera system. Expand


Numerical modeling of an impact‐induced hydrothermal system at the Sudbury crater
[1] Large impact events, like the one that formed the Sudbury crater in Ontario, Canada, at 1.85 Ga, significantly increase the temperature of target rocks. The heat sources generated by such anExpand
Starting Conditions for Hydrothermal Systems Underneath Martian Craters: Hydrocode Modeling
Mars is the most Earth-like of the Solar System s planets, and the first place to look for any sign of present or past extraterrestrial life. Its surface shows many features indicative of theExpand
Multiphase groundwater flow near cooling plutons
We investigate groundwater flow near cooling plutons with a computer program that can model multiphase flow, temperatures up to 1200°C, thermal pressurization, and temperature-dependent rockExpand
On the thermal history, thermal state, and related tectonism of a moon of fission origin
The thermal history of an initially totally molten moon of fission origin properly accounts for (1) the mare basalt epoch, in terms of its duration, the depth of the source region, and degrees ofExpand
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 fromExpand
Location and sampling of aqueous and hydrothermal deposits in martian impact craters.
Large craters may represent giant Petri dishes for culturing preexisting life on Mars and promoting biogeochemical processes, and landing sites must be identified in craters where access to the buried lacustrine sediments and impact melt deposits is provided by processes such as erosion from outflow channels, faulting, aeolian erosion, or excavation by later superimposed cratering events. Expand
Numerical modeling of impact heating and cooling of the Vredefort impact structure
Large meteorite impacts, such as the one that created the Vredefort structure in South Africa ~2 Ga ago, result in significant heating of the target. The temperatures achieved in these events haveExpand
Impact-induced hydrothermal activity within the Haughton impact structure, arctic Canada: Generation of a transient, warm, wet oasis
Field studies and analytical scanning electron microscopy indicate that a hydrothermal system was created by the interaction of water with hot, impact-generated rocks following formation of the 24 kmExpand
Hydrothermal hydration of Martian crust: illustration via geochemical model calculations.
The alteration of Shergotty shows the greatest potential for storing water as hydrous minerals, and the alteration of Icelandic rhyolite has the lowest potential, in accord with studies of low-grade alteration of terrestrial rocks. Expand
Hydrothermal systems associated with martian impact craters
Abstract With widespread evidence of both heat sources and water (either liquid or solid), hydrothermal systems are likely to have existed on Mars. We model hydrothermal systems in two sizes of freshExpand