Athabasca Valles

Athabasca Valles

MarsGeo-Valley
name=Athabasca Valles
latitude=8.6
N_or_S=N
longitude=205.0
E_or_W=W
length=285.0 km
naming=River in Canada. (Changed from Athabasca Vallis.)

Athabasca Valles is a valley on Mars, the youngest known channel cut into its surface by catastrophic flooding. [ [http://www.atypon-link.com/IAHS/doi/abs/10.1623/hysj.48.4.655.51407?cookieSet=1&journalCode=hysj Hydraulic modelling of Athabasca Vallis, Mars / Modelisation hydraulique de Athabasca Vallis, Mars ] ] The flood produced distinctive "teardrop" landforms similar to those found in the channeled scabland region of the United States on Earth. [ [http://www.msss.com/mars_images/moc/dec02/athabasca/ Mars Global Surveyor MOC2-322 Release ] ] It is thought that these landforms were produced though depositional processes wherein the floodwaters dropped sediment behind resistant bedrock outcroppings and craters.http://www.lpi.usra.edu/meetings/lpsc2003/pdf/1066.pdf] The source of water for the flood is thought to be Cerberus Fossae.

Around 80% of the craters in Athabasca Valles are secondary craters from the impact that created Zunil crater. [cite journal|author=McEwan, A.S. et al|url=http://www.mars.asu.edu/christensen/classdocs/mcewen_zunil_Icarus_2005.pdf|title=The rayed crater Zunil and interpretations of small impact craters on Mars|journal=Icarus|volume=176|pages=351 - 381|date=2005]

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