Tag Archives: crater lakes

The evolution of Endeavour Crater

[Editor’s note: From a paper by Madison Hughes and five co-authors recently published in the Journal of Geophysical Research.] Degradation of Endeavour Crater Based on Orbital and Rover‐Based Observations in Combination With Landscape Evolution Modeling • Landscape evolution modeling indicates … Continue reading

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HiRISE: Collapsed material on the floor of Orson Welles Crater

Collapsed material on the floor of Orson Welles Crater. This observation captures collapsed blocks of material on floor of Orson Welles Crater. Layers and the clay minerals found in this 125-kilometer crater are evidence that it once contained a lake. … Continue reading

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Geology and astrobiology of McLaughlin Crater

[Editor’s note: From a paper by Joseph Michalski and seven co-authors recently published in the Journal of Geophysical Research.] The Geology and Astrobiology of McLaughlin Crater, Mars: An Ancient Lacustrine Basin Containing Turbidites, Mudstones, and Serpentinites • McLaughlin crater contained … Continue reading

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HiRISE: In Tikhonravov Crater

In Tikhonravov Crater. Tikhonravov is 386 kilometers in diameter and was named after Mikhail Tikhonravov, a Russian rocket scientist. It’s thought to have once held a giant lake that drained into the 4,500-kilometer long Naktong-Scamander-Mamers lake-chain system. Beautiful Mars series. … Continue reading

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Overflowing crater lakes carved Mars canyons

Today, most of the water on Mars is locked away in frozen ice caps. But billions of years ago it flowed freely across the surface, forming rushing rivers that emptied into craters, forming lakes and seas. New research led by … Continue reading

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HiRISE: Three channels exiting a crater lake

This image shows a roundish crater with three channels breaching the rim and extending to the south. The crater has been filled by sediments and may have been an ancient lake. When the water began to overtop the crater rim, … Continue reading

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HiRISE: Crater tadpoles

This impact crater looks amusingly like a tadpole because of the valley that was carved by water that used to fill it. When the water level inside the crater increased, it breached the crater wall, flowed outward and formed a … Continue reading

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Curiosity peels back layers on ancient martian lake

A long-lasting lake on ancient Mars provided stable environmental conditions that differed significantly from one part of the lake to another, according to a comprehensive look at findings from the first three-and-a-half years of NASA’s Curiosity rover mission. Different conditions … Continue reading

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High-silica rock ‘halos’ widen timeframe for possible Mars life

Lighter-toned bedrock that surrounds fractures and comprises high concentrations of silica — called “halos”— has been found in Gale crater on Mars, indicating that the planet had liquid water much longer than previously believed. The new finding is reported in … Continue reading

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HiRISE: Lakebeds in Holden Crater

Holden Crater was once filled by at least two different lakes. The sediments deposited in those lakes are relatively light-toned where exposed, as we see in this observation. Each layer represents a different point in time and perhaps a changing … Continue reading

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