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Hebrus Valles

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Title: Hebrus Valles  
Author: World Heritage Encyclopedia
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Subject: Amenthes quadrangle, Outflow channels, Transit of Venus from Mars, Asopus Vallis, Moons of Mars
Collection: Amenthes Quadrangle, Valleys and Canyons on Mars
Publisher: World Heritage Encyclopedia

Hebrus Valles

Hebrus Valles
Hebrus Valles, as seen by THEMIS. Direction of flow was determined by shape of streamlined islands. Terraces may have been due to separate flood events.

Hebrus Valles is an ancient system of troughs and valleys in the Amenthes quadrangle of Mars, located at 20.2° north latitude and 233.4° west longitude. It is 317 km long and was named after a river in the Balkans which runs through present day Bulgaria, Greece and Turkey. Some authors have identified the troughs and valleys of Hebrus Valles as outflow channels, but their origin and history remain ambiguous.[1]

Hebrus Valles has tributaries, terraces, and teardrop shaped islands. These features are all characteristic of erosion by fluid flow, but may or may not support the identification of this feature as carved by a single catastrophic outburst flood of water (as the term outflow channel would imply).


  1. ^ Carr, M.H. (2006), The Surface of Mars. Cambridge Planetary Science Series, Cambridge University Press.
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