UPSIDE-DOWN Rivers On Mars?! (Response to MinutePhysics)
The "Mountain or Valley?" illusion makes our brains turn valleys inside out. But inside-out valleys are a real thing, both on Earth and on Mars.
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Show Notes
To learn more about this topic, start your googling with these keywords:
- Inverted relief: a topographic feature, such as an old riverbed, that has reversed its elevation relative to other features.
- Duricrust: a hard mineral crust formed at or near the surface of soil in semiarid regions by the evaporation of groundwater.
- Geomorphology: the study of the physical features of the surface of the earth and their relation to its geological structures.
- Exhumed paleochannel: a remnant of an inactive river or stream channel that has been either filled or buried by younger sediment, and then subsequently uncovered by erosion.
- Erosion: the action of surface processes, including wind and water, that move dirt and rock from their original location to some other place.
- Capillary action: the tendency of a liquid in a capillary tube or absorbent material to rise or fall as a result of surface tension.
- Mineral precipitation: when dissolved compounds in a solution bond together to form a solid (a simple example is how dissolved sodium and chloride ions come together to form salt as water evaporates)
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