Wrinkle ridge

Dorsum (plural Dorsa, from Latin dorsum = back) is in the Planetary Geology a label for altitude ridge-like surface structures of planets, satellites and asteroids. It is a purely morphological designation, so says nothing about their origins. A well-known example is Schiaparelli Dorsum on Mars.

Terms

To name Dorsa there are the following conventions of the International Astronomical Union:

• Mercury: deceased scientists who have contributed to the Mercury Research
• Venus: Sky Gods
• Moon: Geoscientists; see List of mountains and mountains of the Moon
• Mars: No uniform designation process
• Asteroids Ida: Employees of the Galileo Project
• Eros: scientists who have contributed to the exploration of Eros
• Vesta: scientists who have contributed to the exploration of Vesta