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Arsia Mons

Target Name:  Mars
Spacecraft:  Viking orbiter
Produced by:  Calvin J. Hamilton
Copyright: © Calvin J. Hamilton
(Publisher Permission Request)

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The caldera on Arsia Mons is considerably larger than the calderas on either Ascraeus Mons or Pavonis Mons. However, the last major collapse event on Arsia Mons was followed by a substantial outpouring of lava within the caldera. The caldera rim has been breached on the southwest side while the caldera floor lavas bury portions of the northeast rim. Aligned between these breaks in the caldera is a series of very subdued domes on the caldera floor, perhaps representing localized sources of the lava that flooded the caldera. The flaks of the shield have been deeply eroded near the locations of the breaks in the caldera rim and lava flows extend away from the volcanoes at these embayments.

This image is Copyright © by Calvin J. Hamilton. Any commercial/for-profit use of this image needs to be addressed to Calvin J. Hamilton. The caption is by LPI.

Copyright © 1995-2016 by Calvin J. Hamilton. All rights reserved.