this post was submitted on 05 Feb 2024
9 points (90.9% liked)

Geology

393 readers
1 users here now

For all things geology, including serious discussions, memes, field photos, rockhound questions, and more. See also: Mining, Geophysics, Geology Careers, and !earthscience@mander.xyz

General rules: must be geoscience related; must adhere to lemmy.ca moderation rules; no pseudoscience.

founded 2 years ago
MODERATORS
 

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

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

you are viewing a single comment's thread
view the rest of the comments
[–] troyunrau@lemmy.ca 3 points 10 months 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.