Tag Archives: deltas

CRISM: Delta in Jezero Crater

Jezero Crater is a ~45km crater near the Nili Fossae region which is believed to have once been flooded with water. The crater consists of a fan-delta system that deposited rich clays in the area. An important detail for us … Continue reading

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THEMIS: Eberswalde Crater’s famous delta

THEMIS Image of the Day, November 9, 2016. Today’s false color image shows the delta deposit in Eberswalde Crater. Channels from the crater rim hosted material entering the crater. This crater and its delta deposit were shortlisted as a possible Curiosity … Continue reading

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Valleys, deltas, and lacustrine sediment in the southwestern Melas Basin, Valles Marineris

Planetary Geomorphology Image of the Month, July 30, 2015: Joel Davis (University College, London, UK). During the last few decades, dry river valley networks and delta fan structures have been found to be increasingly common on ancient terrains on the … Continue reading

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HiRISE: Searching for clinoforms in a possible delta

A delta is a pile of sediment dumped by a river where it enters a standing body of water. Evidence for deltas that formed billions of years ago on Mars has been mounting in recent years. One line of evidence … Continue reading

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THEMIS: Channel and delta

THEMIS image of the Day, July 1, 2015. This VIS image shows two channels. The channel in the center of the image ends in a crater, where it has created a delta deposit. These unnamed craters and channels are located … Continue reading

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HiRISE: Bar and pit where valley enters crater

So, a valley enters a crater bar… Valley entering northern mid-latitude crater. Beautiful Mars series.

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Jezero Crater records two water-related events

Researchers from Brown University have completed a new analysis of an ancient Martian lake system in Jezero Crater, near the planet’s equator. The study finds that the onslaught of water that filled the crater was one of at least two … Continue reading

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THEMIS: Crater delta

THEMIS Image of the Day, June 2, 2014. A delta deposit sits on the floor of this unnamed crater in Arabia Terra. The channel that created the delta dissects the crater rim. More THEMIS Images of the Day by geological … Continue reading

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THEMIS: Delta deposit

THEMIS Image of the Day, March 17, 2014. A delta deposit is located where a channel enters Ismenius Cavus. More THEMIS Images of the Day by geological topic.

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Most deltas on Mars created by short, catastrophic floods

Rivers that run into lakes and other standing bodies of water drop sediment where the flow slackens as it enters the body of water. Over time, the accumulating material builds a delta — a wedge of sediment whose form can … Continue reading

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