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Planetary Interiors

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Minerals

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Isostacy

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Mass Wasting

SlumpSlideCreepFlow

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Tectonics

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Figure 9.21 Box 9.1

Figure 9.23 Figure 9.24

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Plate Tectonics

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Volcanoes

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Landforms

• Shield Volcano (Hawaii)

• Cinder Cone (Lassen National Park)

• Stratovolcano (Mt. Shasta, California

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Hot features

• Fumaroles• Hot springs• Geysers

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Wind

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Dunes

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Alluvial Fan

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Impact Craters

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Terrestrial Impact Craters

• Meteor Crater, AZ• Manicouagan,

Canada• Chicxulub, Yucatan,

Mexico

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Impact Frequency

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Surface Geology of Individual Bodies

• Remote Sensing– Imaging– Photometry– Thermal and reflectance spectra– Radar and radio observations

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Moon• No

atmosphere• Two primary

terrains– Highlands

• Old, highly cratered

– Maria• Younger,

darker

• Volcanism– Maria

• Tectonism– rilles

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Mercury• Primarily covered

with impact craters– Caloris Basin

• No obvious volcanism

• Tectonism– Long, sub-linear

scarps– Likely produced by

planetwide contraction

– Decrease in Mercury’s radius by 1-2 km

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Venus

• Bulk properties similar to Earth

• Features dominated by Volcanism

• Also see– Impact craters– Tectonism– Erosion

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Volcanism

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Craters, Tectonics, & Wind

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Mars

• Crustal Dichotomy– Southern cratered

highlands– Northern lowlands

• All surface processes have visible features

• No obvious active volcanism and tectonism– Dead world?

• Most new research

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Water

• Channels• Teardrop islands• Fluidized ejecta blankets

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Aeolian Features

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Io• Few impact craters• Most volcanically

active body in solar system

• Tectonics, erosion

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Largest Volcano• Olympus Mons

– 27 km high– 550 km across– 102 km diameter caldera

• Loki– 200 km diameter

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Europa

• Icy surface• Processes

– Tectonics– Volcanism/erosion– Cratering

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Cassini at Saturn

• http://saturn.jpl.nasa.gov/home/index.cfm

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More Titan