this post was submitted on 05 Feb 2024
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Geology

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cross-posted from: https://lemmy.ca/post/14740589

high arctic desert. Yes there's water, but no real vegetation.

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[โ€“] [email protected] 3 points 1 year ago* (last edited 1 year ago) (1 children)

Check out the Google Earth satellite image, there's a figure-eight, I wonder how it ended up looking like two craters side-by-side, their rims apparently touching.

Here it is.

[โ€“] troyunrau 3 points 1 year ago

The lower grey feature is the crater -- the grey rock is impact melt breccia -- the lava pool that flooded the crater after impact. The upper feature is erosional -- river valleys -- that only gives the illusion of a crater due to its roughly circular expression combined with the human eye wanting to see patterns. But the rocks there are definitively not crater rocks.