Emma Dean is a small impact crater in the

Meridiani Planum Meridiani Planum (alternatively Terra Meridiani) is a large plain straddling the equator of Mars. The plain sits on top of an enormous body of sediments that contains bound water. The iron oxide in the spherules is crystalline (grey) hematite (Fe ...

extraterrestrial plain situated within the

Margaritifer Sinus quadrangle The Margaritifer Sinus quadrangle is one of a series of list of quadrangles on Mars, 30 quadrangle maps of Mars used by the United States Geological Survey (USGS) Astrogeology Research Program. The Margaritifer Sinus quadrangle is also referred ...

(MC-19) region of the planet

Mars Mars is the fourth planet from the Sun. It is also known as the "Red Planet", because of its orange-red appearance. Mars is a desert-like rocky planet with a tenuous carbon dioxide () atmosphere. At the average surface level the atmosph ...

. This geological feature was visited by the ''Opportunity'' rover from sols 929 to 943. The much larger crater Victoria lies about 100m to the east. Emma Dean lies directly on top of the ejecta blanket from Victoria and could therefore expose material originating from deep inside Victoria. The crater is named after Emma Dean, John Wesley Powell's wife and one of the boats in

Grand Canyon The Grand Canyon is a steep-sided canyon carved by the Colorado River in Arizona, United States. The Grand Canyon is long, up to wide and attains a depth of over a mile (). The canyon and adjacent rim are contained within Grand Canyon Nati ...

Powell expedition.

References

Impact craters on Mars Margaritifer Sinus quadrangle {{Mars-crater-stub

See also

References