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File:Sirenum Fossae - PIA25645.tif

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Description Today's VIS image shows a portion of Sirenum Fossae. The linear features are tectonic graben. Graben are formed by extension of the crust and faulting. When large amounts of pressure or tension are applied to rocks on timescales that are fast enough that the rock cannot respond by deforming, the rock breaks along faults. In the case of a graben, two parallel faults are formed by extension of the crust and the rock in between the faults drops downward into the space created by the extension. Numerous sets of graben are visible in this THEMIS image, trending from north-northeast to south-southwest. Because the faults defining the graben are formed perpendicular to the direction of the applied stress, we know that extensional forces were pulling the crust apart in the west-northwest/east-southeast direction. The Sirenum Fossae graben are 2735km (1700 miles) long and stretch from eastern Terra Sirenum into western Daedalia Planum.
Date (published)
Source Catalog page · Full-res (JPEG · TIFF)
Author NASA/JPL-Caltech/ASU
Camera location29° 13′ 14.88″ S, 146° 51′ 39.6″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo
This image or video was catalogued by Jet Propulsion Laboratory of the United States National Aeronautics and Space Administration (NASA) under Photo ID: PIA25645.

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This media is a product of the
2001 Mars Odyssey mission
Credit and attribution belongs to the Thermal Emission Imaging System (THEMIS) team, NASA/JPL-Caltech/ASU

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Public domain This file is in the public domain in the United States because it was solely created by NASA. NASA copyright policy states that "NASA material is not protected by copyright unless noted". (See Template:PD-USGov, NASA copyright policy page or JPL Image Use Policy.)
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current16:13, 3 April 2023Thumbnail for version as of 16:13, 3 April 2023673 × 1,418 (706 KB)Junior Jumper (talk | contribs)== {{int:filedesc}} == {{NASA Photojournal | catalog = PIA25645 | image = yes | mission = 2001 Mars Odyssey | instrument = THEMIS | addition_date = 2022-12-09 | caption = Today's VIS image shows a portion of Sirenum Fossae. The linear features are tectonic graben. Graben are formed by extension of the crust and faulting. When large amounts of pressure or tension are applied to rocks on timescales that are fast enough that the rock cannot respond by deforming, the rock breaks along faults. In...

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