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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/dryExpand
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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 integrationExpand
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Martian Layered Fluvial Deposits: Implications for Noachian Climate Scenarios
[1] Fluvial deposits in a basin north of Holden crater exhibiting a sinuous, anabranching pattern are of deltaic or fan origin. Channel width and meander wavelength indicate persistent flowExpand
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Long-term precipitation and late-stage valley network formation: Landform simulations of Parana Basin, Mars
[1] We use a computer landform evolution model to show that Noachian-Hesperian-aged, late-stage valley network formation required numerous and repeated moderate flood events rather than one or a fewExpand
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Large alluvial fans on Mars
[1] Several dozen distinct alluvial fans, 10 to ∼40 km long downslope, have been observed in highlands craters. Within a search region between 0° and 30°S, alluvial fan-containing craters were foundExpand
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The influence of thermal inertia on temperatures and frost stability on Triton
Abstract Seasonal subsurface heat conduction can have a large influence on Triton's N2 frost distribution. Increasing surface thermal inertia reduces the thickness and extent of seasonal N2 frosts.Expand
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The nature of coarse-grained crystalline hematite and its implications for the early environment of Mars
Abstract The Thermal Emission Spectrometer (TES) on the Mars Global Surveyor spacecraft has detected deposits of coarse-grained, gray crystalline hematite in Sinus Meridiani, Aram Chaos, and VallisExpand
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Geology of Ganymede
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The Phanerozoic Impact Cratering Rate: Evidence from the Farside of the Moon
The relatively recent (<1 b.y.) flux of asteroids and comets forming large craters on the Earth and Moon may be accurately recorded by craters with bright rays on the Moon's farside. Many previouslyExpand
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Hellas as a Possible Site of Ancient Ice-Covered Lakes on Mars
Abstract Based on topographic, morphologic, and stratigraphic evidence, we propose that ancient water-laid sediment is the dominant component of deposits within Hellas Planitia, Mars.Expand
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