Geddes is a crater on

Mercury Mercury commonly refers to: * Mercury (planet), the nearest planet to the Sun * Mercury (element), a metallic chemical element with the symbol Hg * Mercury (mythology), a Roman god Mercury or The Mercury may also refer to: Companies * Merc ...

. It has a diameter of 84 kilometers. Its name was adopted by the

International Astronomical Union The International Astronomical Union (IAU; french: link=yes, Union astronomique internationale, UAI) is a nongovernmental organisation with the objective of advancing astronomy in all aspects, including promoting astronomical research, outreac ...

(IAU) in 2010. Geddes is named for the Irish stained glass artist

Wilhelmina Geddes Wilhelmina Geddes ''HRUA'' (25 May 1887 – 10 August 1955) was an Irish stained glass artist who was an important figure within the Irish Arts and Crafts movement and also the twentieth century British stained glass revival. Notable works includ ...

, who lived from 1887 to 1955. Within Geddes is a relatively large irregular depression, making it a

pit-floor crater The geology of Mercury is the scientific study of the surface, crust, and interior of the planet Mercury. It emphasizes the composition, structure, history, and physical processes that shape the planet. It is analogous to the field of terrestr ...

. Such pits are thought to be caused by volcanic activity. 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. Geddes crater interior EN1022540782M.jpg, The central depression of Geddes is irregular in shape and may be a collapse feature rather than an impact crater Geddes crater EN0258458455M.web.png, Higher resolution view of the central depression Geddes crater EN0225439415M.jpg, View of Geddes at a high sun angle, where the hollows are visible as bright spots

References

Impact craters on Mercury {{Mercury-planet-stub