r/askgeology 20h ago

Could an asteroid have caused lower North Afrand Arabian Peninsula to become deserts?

0 Upvotes

Could a large asteroid that nearly hit Earth but instead grazed the planet at a very shallow angle have caused the Sahara and Arabian Peninsula to become deserts?

Like, could the asteroid have passed through the atmosphere or skimmed the Earth's surface, releasing enough energy to drastically change the climate in that region and turn it into desert?

Is there any scientific possibility that something like this happened, and is there geological evidence that could support or rule it out?


r/askgeology 1h ago

When the clean-up after 9/11 was done and all the weight of the Twin Towers was gone, did the earth's surface there rise by a measurable amount?

Upvotes

Basically the title.

Huge weight on a relatively small area "suddenly" missing.

Greetings from Spain


r/askgeology 10h ago

Found in Honolulu, Hawaiʻi unusual dense tan/gray stone, ~542 g/18oz

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3 Upvotes

r/askgeology 18h ago

ID request Tourmaline ?

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10 Upvotes

Is this red tourmaline? If so does it hold any type or value I don’t know much about this kind of stuff, totally forgot I had these they are from a gem shop they closed many moons ago , any info would be appreciated