Definition
Rimae are arcuate, sinuous, or straight grooves on the lunar surface and are thought to have an endogenic origin, that is, either tectonic or volcanic. On July 30, 1971, Apollo 15 landed near Rima Hadley (also termed Hadley Rille, 25°N, 3°E) and took photographs of that area. Rima Hadley is a steep-walled meandering rille that has a length of more than 100 km, a width of 1–2 km, and a depth of up to 400 m. It is of lava-flow origin and is the only place where lunar rock outcrops have been observed. Thus far, 111 lunar features have been named rimae.
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© 2015 Springer-Verlag Berlin Heidelberg
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van Gasselt, S. (2015). Rima, Rimae. In: Gargaud, M., et al. Encyclopedia of Astrobiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-662-44185-5_1378
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