Olympus Mons
description
Transcript of Olympus Mons
Olympus Mons
Mitchell Kirshner3/11/14
History•19th century•Mariner 9•Viking•Mars Global Surveyor
Location18.65 °N, 226.2 °WNorthwest of Tharsis23 km tall, +21.287 km, -8.180km600 km across
Timeline MOC and THEMIS used to find that
Noachian period >3.7Ga yielded global volcanism
followed by vent volcanism in Tharsis, Elysium, and Circum-Hellas
later just in Tharsis and Elysium Activity localized to Tharsis around
1.6Ga volcanism was active until 200-100
Ma
Effusion• rate of magma supply to Kilauea and
Moana Loa averages .01 km3/yr• Volume is estimated to be 2.6*10^6
km^3• Using rate accumulation values given in
Hawaii, it would take 130 million years to construct shield volcano
Gravity
Aureole DepositsNorthwestEastFlank failure-induced landslidesIce-Lubricated Gravity SpreadingGlacial Interactions
Escarpment8 kmAssymetryNorthwest=shallow, southeast=steepWaterMass movementFaults
Caldera•SiO2 content •Lava fountain cinders
Magma Chamber•d<16 km•Estimated depth of Martian primary melts• 140-200 km
Atmospheric EffectConstant column density~5 decrease in mass from bottomLow atmospheric density
WaterDeep within volcanoShielded from radiationEast flank- faults
Future LandingsDifficult to study via rover8km escarpmentParachuteDust
The End