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Mars: recent and episodic volcanic, hydrothermal, and glacial activity revealed by the Mars Express High Resolution Stereo Camera (HRSC)
Proceedings article published in 2005 by
G. Neukum,
R. Jaumann,
H. Hoffmann,
E. Hauber,
Jw W. Head,
S. van Gasselt 
,
At T. Basilevsky,
B. A. Ivanov,
S. van Gasselt,
Sc C. Werner,
T. McCord,
Jb B. Murray,
R. Greeley,
Co Investigator Team Hrsc
,
At T. Basilevsky,
B. A. Ivanov,
S. van Gasselt,
Sc C. Werner,
T. McCord,
Jb B. Murray,
R. Greeley,
Co Investigator Team Hrsc
Abstract
The analysis of HRSC image data shows that calderas on five major volcanoes in the Tharsis and Elysium regions have undergone repeated activation and resurfacing during the last 20% of Martian history, with caldera floors as young as 100 Ma, and flank eruptions as young as 2 Ma.