Geddes (crater)

Geddes is a crater on Mercury. It has a diameter of 84 kilometers. Its name was adopted by the International Astronomical Union (IAU) in 2010. Geddes is named for the Irish stained glass artist Wilhelmina Geddes, who lived from 1887 to 1955.[1]

Geddes
Geddes crater at center and Ts'ai Wen-Chi in upper right
PlanetMercury
Coordinates27.2°N 29.6°W / 27.2; -29.6
QuadrangleVictoria
Diameter84 km (52 mi)
EponymWilhelmina Geddes
Mariner 10 image with Geddes at right

Within Geddes is a relatively large irregular depression, making it a pit-floor crater. Such pits are thought to be caused by volcanic activity.[2]

Antoniadi Dorsum cuts across Geddes crater.

Hollows

Hollows are present on the floor of Geddes crater, mostly at the rims of smaller craters within it, and along the rim of the central depression.

  • The central depression of Geddes is irregular in shape and may be a collapse feature rather than an impact crater
    The central depression of Geddes is irregular in shape and may be a collapse feature rather than an impact crater
  • Higher resolution view of the central depression
    Higher resolution view of the central depression
  • View of Geddes at a high sun angle, where the hollows are visible as bright spots
    View of Geddes at a high sun angle, where the hollows are visible as bright spots

References
  1. "Geddes". Gazetteer of Planetary Nomenclature. NASA. Retrieved 2 July 2012.
  2. Gillis-Davis, Jeffrey J.; Blewett, David T.; Gaskell, Robert W.; Denevi, Brett W.; Robinson, Mark S.; Strom, Robert G.; Solomon, Sean C.; Sprague, Ann L. (2009). "Pit-floor craters on Mercury: Evidence of near-surface igneous activity". Earth and Planetary Science Letters. 285 (3–4): 243–250. Bibcode:2009E&PSL.285..243G. doi:10.1016/j.epsl.2009.05.023.


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