GEOG 441 Lecture Notes - Lecture 3: Reull Vallis, Terra Cimmeria, Dust Devil Tracks
Document Summary
Promethei terra just east of hellas planitia. West and southwest of terra cimmeria, promethei terra lies adjacent to the eastern margins of hellas planitia. Like all the noachian regions, it is generously covered with craters in a profusion of size ranges. The landscape features ancient rugged highland terrain interspersed with lower elevation basins filled with sediments eroded and transported from the highland massifs. In southernmost promethei terra is a roughly half-circular ridge, promethei. Rupes, which is evidently the remnant of a very large impact basin now mostly covered by planum australe. Evidence of valley networks is apparent, as well, and northernmost promethei. Terra is the source region for one of the great outflow channels debouching in eastern hellas: harmakhis vallis, its tributary reull vallis, and the tributary of the latter, teviot vallis. The region is quite dusty, and dust piles up in great beds dozens of meters thick in many a crater.
