Photo of Glinka crater (bottom) by MESSENGER
Glinka is a pit-floored crater on Mercury, which was discovered in 1974 by Mariner 10 spacecraft. Its floor is covered by the smooth plain material and displays a kidney-shaped collapse feature, which is also called a central pit. The size of the pit, which was first noticed in MESSENGER images obtained in January 2008, is 20 × 8.5 km. It is surrounded by a bright pyroclastic deposit. Such a feature may have resulted from collapse of a magma chamber underlying the central part of the crater. The collapse feature is an analog of Earth's volcanic calderas.
- Gillis-Davis, Jeffrey J.; Blewett, David T.; Gaskell, Robert W.; et al., 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.
- "Mercury: Glinka". USGS. Retrieved November 18, 2009.
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