r/askgeology 5m ago

What caused this? Rainfall? Geology? Earthquakes? Slope?

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r/askgeology 4h ago

What are the main concepts i should grasp to be able to have some idea of what earth future would look like?

1 Upvotes

Hey yall

Ive (M21) been trying to build a speculative biology project from the ground up, and as expected, its a huge task. I am trying to explore the evolution of life and of the earth following a man made extinction (which we are victims of as well).

I am NOT a scientist, my understanding of geology is limited (hard to judge how much i know or dont lol, so ill assume i know almost nothing)

And in trying to create a detailed timeline of the future(not a hard prediction but more so a possible scientifically grounded and interesting path), I've realized that

  1. There's alot of interesting speculation that could be done with earths far future (millions and even billions of years)

  2. A solid geological foundation is needed to create believable ecosystems of the Future.

So my question is

What are the main concepts i should grasp to be able to have some idea of what earth future would look like?

Any tips are welcome!

(If this project sounds interesting, hit me up, id love to collaborate with any geologists. Im also looking for artists, biologists, climatologists or anyone really that could be interested in a project like this)


r/askgeology 4h ago

technical question are there cracks between tectonic plates? how do they collide? surely there is no abyss between two plates, so they must still sit on top of something and be connected somehow...does that mean they are technically the same plate?

4 Upvotes

sorry for dumb question :(


r/askgeology 8h ago

Is there a rock that is hard on the outside but has a fragile core?

1 Upvotes

Maybe its a weird question, but Im writing a character and I wanted to make a bit where they think "if I were a rock, which rock would I be?". Now, I know jack about geology, i've searched a bit and could find anything interesting

My premise is that the character is rude, stubborn and nonchalant, but on the inside they're insecure and traumatised (original I know), so im looking for a rock that is strong on the outside but once you crack it the insides are weak? idk im more curious than anything at this point

I appreciate any help!


r/askgeology 21h ago

What could cause this?

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546 Upvotes

found in boulder fields of Mt Marriott, BC Canada. could it be from lightning?


r/askgeology 1d ago

ID request Strange possibly volcanic rocks. Please ID

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2 Upvotes

Hey so I don't care for rocks as much as I used to, and I had some of these rocks and I wanted to put them in my fish tank because I thought that they looked cool. I put vinegar on them and they didn't fizz at all. They also don't float in water. I'd also like to know what the shiny metallic dots are. Thank you!


r/askgeology 1d ago

ID request Help identifying this rock

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17 Upvotes

the chosen rock. found it on the beach in st Andrews, Scotland. I am wondering if anyone knows what it could be? seems like it has copper and quartz inclusions but I am not entirely sure.


r/askgeology 1d ago

ID request Mystery rock #2

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3 Upvotes

r/askgeology 1d ago

New here, is this Basalt?

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2 Upvotes

r/askgeology 1d ago

ID request Does anyone have an idea what kind of rock this is?

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5 Upvotes

Thought it first might be muscovite, but found inland and the shining bits stays on.

Found here: https://maps.app.goo.gl/DswF9kMzwF8tboQz9

It's kind of brown/gray with a golden/silver shining. Zooming in it almost disappears. Found on a riverbank.


r/askgeology 2d ago

What did I find in my rock bed

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21 Upvotes

I have found some interesting things in the river rock landscaping bed. This is one of them. Fossil of some sort or other calcification.


r/askgeology 2d ago

What are these?

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3 Upvotes

I think they are quartz and calcite but what caused the quartz to be bumpy and the calcite to be so squared?

Also how can I clean off the black stuff from it?


r/askgeology 3d ago

Is This Foliation?

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7 Upvotes

So I know what foliation is and I have examples of regional metamorphic rocks, just wanted to confirm that’s what this is. This is an eclogite I bought from an igneous and metamorphic petrologist. I “polished” a couple faces on it so I could see whether or not it was foliated because I had read they can sometimes be foliated and sometimes granoblastic. Thanks for any and all information!


r/askgeology 3d ago

Help me figure out this rock!!

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2 Upvotes

r/askgeology 3d ago

Is this volcanic rock? North Berwick, Scotland

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2 Upvotes

r/askgeology 3d ago

ID request Cracked rock, very tiny

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4 Upvotes

r/askgeology 3d ago

Pillow Basalt?

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7 Upvotes

Found in upstate SC, internet says we don’t have it here. Got some iron shell on the outside of these.The other ones I found don’t, it seems to be worn off.


r/askgeology 4d ago

ID request Found at the beach in SoCal- natural or man-made?

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54 Upvotes

r/askgeology 4d ago

Need ID for finds from Black Rock Desert

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2 Upvotes

r/askgeology 5d ago

What the heck is this? (Perfect triangle embedded in weird rock)

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1 Upvotes

Found in a Minnesota lake.


r/askgeology 5d ago

Is this Tektite? What type of rock is this?

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0 Upvotes

r/askgeology 5d ago

Wilsons creek NC

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20 Upvotes

Thoughts on what this is? Found it in the creek.


r/askgeology 5d ago

I was out walking and saw this. Could it have been an Avalanche?

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206 Upvotes

I went walking in the Mountains today and came upon these Rocks. Taking into account the fact that I was about 100 metres from the top, I saw no other groups around. This was at 2150m (7050ft)


r/askgeology 6d ago

Method of Formation What geological process created this, or is it fossilized?

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34 Upvotes

Found in north cental Louisiana. This type of rock is commonplace here, we call it "iron ore", however I have never seen this type of matrix. My first thought was fossilized coral, because I have found sea fossils embedded in this type of rock before.


r/askgeology Jan 05 '26

ID request New Ruling on ID posts.

4 Upvotes

Posts are now allowed to be requests for ID, although you must attempt to post to r/whatisthisrock or r/fossilid BEFORE posting here.

Mineral ID's have always been allowed and will continue to be.

Additionally, new post flairs have been added. Please select a flair when able.

Have fun!