r/geology 27d ago

Identification Requests Monthly Rock & Mineral Identification Requests

5 Upvotes

Please submit your ID requests as top-level comments in this post. Any ID requests that are submitted as standalone posts to r/geology will be removed.

To help with your ID post, please provide;

  1. Multiple, sharp, in-focus images taken ideally in daylight.
  2. Add in a scale to the images (a household item of known size, e.g., a ruler)
  3. Provide a location (be as specific as possible) so we can consult local geological maps if necessary.
  4. Provide any additional useful information (was it a loose boulder or pulled from an exposure, hardness and streak test results for minerals)

You may also want to post your samples to r/whatsthisrock or r/fossilID for identification.


r/geology 1d ago

I found a particular erosion while on a mountain peak in Guanajuato Mexico

250 Upvotes

I went to go up a mountain here in Mexico and found this particular well idk if it’s a structure or fossil but I’m interested what caused it


r/geology 8h ago

I need help !

8 Upvotes

I want books that talk about geology in a simple way, and it is preferable that the language of the book be simple as well , thanks ! .


r/geology 3h ago

Career Advice Geophysical survey tech without any academic/geo background

3 Upvotes

I am curious what the geophysical survey/exploration technician options are without a direct geo background?

I recently worked on a small crew as a contractor basically with 2 Geo exploration companies. I was brought on pretty last minute and ended up loving the work. It’s outside of my actual academic background which is a BSc in ecology/plant ecology and heavy/ extensive field work which I love. Everyone aside from our small crew had degrees in Geo sciences or more broadly STEM, I was surprised to be the only person from our crew with anything even remotely close to a geo background. Is this typical for a more entry level role such as geo technician? I had gathered based on conversations it is difficult for these larger corporations to find technicians willing to travel for extended periods of time? (One company was not US which is the one having difficulty finding their own citizens that have the ability to work in the US.) The type of surveying I won’t specify but I had the hang of everything within 4 days. I started to look for more similar positions/opportunities but am not sure where to start, or if it’s even an option without an actual geo background based on the bit I have found.

I hit it off well with the geophysicists and geologists on the project and was wanting to pursue more similar positions to get a feel for the field. Thanks for reading this far! Apologies if this is a bit jumbled!


r/geology 1d ago

Found this weird rock today, does anybody know what it is?(I know nothig about geology)

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123 Upvotes

r/geology 17h ago

Information Magma in the Ocean

30 Upvotes

I tried looking up the answer but i couldn't find anything, but i remember reading when i was young & being taught in high school or sum media that underwater magma is so hot that it immediately evaporates the water and creates a vapor/barrier of air between the magma & water. Is this true or was it rebuked


r/geology 3h ago

Need help regarding my geology course

2 Upvotes

my lectures are yet to be started

hello all new to this sub, and i am a btech student at the petroleum engineering and i have geology subject in it and as given below is my syllabus for the second semester can any one suggest any good book which will help me out


r/geology 4h ago

Information Geological ages

2 Upvotes

Hi! I am an archaeology student. I am working on a paper rn and I need to get some concepts cleared about geological time (the names of the ages are usually mentioned when discussing topography or climate). It gets confusing to understand these terms completely. Could someone recommend some books/journals that could help me get started? Thanks :)


r/geology 23h ago

(OC) Geode in Alaska

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42 Upvotes

r/geology 8h ago

Information Striped flint

2 Upvotes

Is striped flint really "endemic" to Sandomierz region in Poland? Wikipedia only mentions this region both in Polish and English, but it seems quite strange to me. How come there is so much of it here?


r/geology 22h ago

Information How does water get into deep aquifers?

26 Upvotes

I install monitoring wells, sometimes we go 2 or 3 aquifers down. How does the water get there. Does it come from the surface, or is it just trapped there from before times. We'll drill through 200+ feet of mostly dense clay and till. Or does it get down there from somewhere else where maybe its more rocky or sandy so the water has somewhere to trickle down?

Edit. Thanks for the replies


r/geology 1d ago

A completely original observation upon reading Oathbringer

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153 Upvotes

r/geology 1d ago

Field Photo Strange formations/striations on rock surface. Jebel Shams, Oman. Any idea?

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47 Upvotes

Hand drawn banana for scale.


r/geology 11h ago

Is this agate, fossil, or combo?

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0 Upvotes

I think this may be agate, I found it in South Jersey. The formation on the one side and lack their of on the opposite is a head scratcher. Please smack me w some wisdom


r/geology 2d ago

Field Photo Banded iron

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974 Upvotes

Some other neat features as well. Arizona.


r/geology 1d ago

Ramon crater colors park. Don’t know what I’m looking at, but it sure is pretty (and crumbly)

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56 Upvotes

r/geology 5h ago

Is my rock a meteorite?

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0 Upvotes

r/geology 1d ago

Information Help choosing geological compass

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21 Upvotes

I want to buy my first geological compass. However I don't know which one to choose (see picture). The main reason I want to buy it is to taking measurements for dip direction, angle and strike. Can someone who have experienced with this compass help me?


r/geology 1d ago

Information Best fossil hunting places in Northern England?

7 Upvotes

Hi all.

Just wondering if anyone knows good places to go fossil hunting in the north of England? I’m going away for a few days on my birthday and just fancied going somewhere and having a fun activity to do. Don’t mind a hike to get there and a more awkward place to do the hunt.

TIA


r/geology 2d ago

Meme/Humour Ordered vs Received

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651 Upvotes

My wife bought me an agate coffee mug for Christmas.... It's (poorly) painted epoxy.


r/geology 22h ago

Information Helicorder for Streams or Traces

2 Upvotes

I'm looking at creating helicorder charts using a stream held in an mseed data type. Would it make sense to use streams or traces to make the helicorder chart?


r/geology 1d ago

Information Insight into Uyuni Salt Flat

4 Upvotes

I just got back from Uyuni salt flats in Bolivia. Had a great guide, but he was lacking some geological information, understandably. Where can I find more information about the geological formation of this Salar de Uyun? (I googled it, and it all commercial). This salt flat is about 13K ft asl, surrounded by Calderon type mountains and an island within has petrified corals.


r/geology 1d ago

Soil of Gran Canaria Atlantic Ocean Canary Islands Spain to verify the composition of the rocks

8 Upvotes

r/geology 22h ago

Did any nothosaurid species live in North America?

1 Upvotes

Most sources cite that Nothosaurids lived only in Europe, North Africa & China. But some sources claim some Nothosaurid species lived in North America. North Africa & China are pretty close to North America on Pangea. So did any Nothosaurid species live in North America?


r/geology 1d ago

What would the formations under the bridge be called?

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50 Upvotes

r/geology 1d ago

Information Looking for outcrops FL

0 Upvotes

Hey, I’m doing some traveling, and I was curious if there were any well exposed outcrops near Sebastian Florida.