Tag Archives: sinuous ridge

HiRISE: Sinuous ridge with a meander

Sinuous ridge with a meander east of Meridiani Planum. Beautiful Mars series.

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HiRISE: Convergent sinuous ridges

Convergent sinuous ridges in crater within Newcomb Crater. Beautiful Mars series.

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HiRISE: North Hellas rock layers & sinuous ridge

North Hellas region layered rock and sinuous ridge exposures. Beautiful Mars series.

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Esker and parent glacier in Phlegra Montes

Planetary Geomorphology Image of the Month, February 29, 2016: Colman Gallagher (University College Dublin). Eskers are sinuous ridges composed of deposits (Image 1) laid down from meltwater flowing in tunnel-like conduits beneath glaciers (Image 2). On Earth, eskers are common components … Continue reading

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HiRISE: Discontinuous sinuous ridge

A discontinuous sinuous ridge on the fourth planet from Sol. Beautiful Mars series.

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HiRISE: Sinuous ridge on Orson Welles bajada

Alluvial fans are piles of debris dumped by rivers when they emerge from the mountains and enter a mostly dry valley. A bajada (such as this example named after the famous American filmmaker) consists of a series of coalescing alluvial … Continue reading

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HiRISE: Sinuous ridge materials in Reuyl Crater

There are some interesting erosional signs in this observation, which will make for a good comparison with other intracrater fans and fluvial sedimentary landforms. We can also see an inverted channel system, possibly ponded toward the southwest. As we’ve learned … Continue reading

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HiRISE image: Sinuous ridge and mesa

Beautiful Mars series: Sinuous ridge and a mesa in Kasabi Crater. More Beautiful Mars images.

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HiRISE image: sinuous ridges and meanders

These ridges are thought to be old river channels, but wind erosion has created inverted topography. What was low (the channel bottoms) was more resistant to erosion, so now it is relatively high. In a closeup image, we see a … Continue reading

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Aeolis Serpens, Mars’ longest sinuous ridge, is an ancient riverbed

A linear ridge that winds for more than 200 kilometers (120 miles) through part of South Australia was a river channel roughly 10 million years ago. After the paleoriver stopped flowing, silica-rich groundwater seeped into the riverbed, cementing its sediments.

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