{ "title": "Cutting across the Medusa Fossae", "authors": "HiRISE", "metadata": { "thumbnailURL": "https://static.uahirise.org/anews/2020-11-30/ESP_032620_1780.jpg", "excerpt": "At this location is an exceptionally long sinuous ridge that cuts across newly mapped geologic units of the Medusae Fossae Formation on Mars." }, "version": "1.5", "identifier": "ESP_032620_1780", "language": "en", "layout": { "columns": 10, "width": 1024, "margin": 85, "gutter": 20 }, "documentStyle": { "backgroundColor": "#faf7f2" }, "components": [ { "role": "heading1", "layout": "heading1Layout", "text": "HiPOD: 30 November 2020" }, { "role": "divider", "layout": "bigDividerLayout", "stroke": { "width": 3, "color": "#8c2028" } }, { "role": "title", "layout": "halfMarginBelowLayout", "text": "Cutting across the Medusa Fossae" }, { "role": "video", "layout": "fullBleedLayout", "URL": "https://uahirise.org/media/clips/ESP_032620_1780.mp4", "stillURL": "https://static.uahirise.org/anews/2020-11-30/ESP_032620_1780-title.jpg", "accessibilityCaption": "HiClip narration by Tre Gibbs." }, { "role": "body", "format": "html", "layout": "hipodMarginLayout", "text": "


At this location is an exceptionally long sinuous ridge, possibly an inverted fluvial feature, that cuts across newly mapped geologic units of the Medusae Fossae Formation.

In the eastern (left) part of the image, the sinuous ridge appears in a manner that suggests erosion of the surrounding landscape. Interestingly, this fluvial feature has no elevation within and to the west location, indicating that fluvial activity may have occurred within this material before widespread erosion.

With HiRISE resolution, we might be able to have more information on the timing of fluvial activity and its relationship to the history of the Medusa Fossae Formation.

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ID: ESP_032620_1780
date: 12 July 2013
altitude: 269 km (167 mi)

Clip narration by Tre Gibbs

NASA/JPL/UArizona

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