r/geology 28d ago

Identification Requests Monthly Rock & Mineral Identification Requests

7 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 10h ago

In Southwest Oklahoma on erosion hills. Is it selenite?

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88 Upvotes

Hello. I found these on some erosion hills in southwest Oklahoma. We have lots of cobblestones and and quartz in the area but I've never seen something quite like this. I'm thinking it's selenite, but not sure. Thanks for any info y'all have.


r/geology 13h ago

Found a really good hanging wall / footwall at an abandoned mine today

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118 Upvotes

The ore body (gold primary, silver secondary) was mined from two directions. I flipped the footwall photo so it was in the correct orientation to line of the faulting. Location: Sheep Hole Wilderness, San Bernardino County, California. Major units: pre-Cenozoic granite and metamorphic undivided rocks and Mesozoic granitic rocks, unit 3.


r/geology 23m ago

TW. Im new to this

Upvotes

Can anybody educate me about this geo-formation I discovered and cracked open?


r/geology 1h ago

Information Interesting rock

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Upvotes

Hi guys! Came to this sub to see if I can find some info on this rock i found on the beach. It got my attention cause of the stunning straight bands on it. Anyone can say what this/these band/bands is/are?


r/geology 11h ago

Field Photo "La Cabeza" Andesitic lava dome in the Iztaccihuatl volcanic complex, Mexico.

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16 Upvotes

r/geology 1d ago

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

291 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 18h 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 23h ago

I need help !

9 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 1d ago

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

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151 Upvotes

r/geology 19h ago

Need help regarding my geology course

3 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 1d ago

Information Magma in the Ocean

36 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 19h 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 1d ago

Information Striped flint

3 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 1d ago

(OC) Geode in Alaska

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42 Upvotes

r/geology 1d ago

Information How does water get into deep aquifers?

30 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 2d ago

A completely original observation upon reading Oathbringer

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164 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 2d ago

Field Photo Banded iron

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1.0k Upvotes

Some other neat features as well. Arizona.


r/geology 1d ago

Is this agate, fossil, or combo?

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1 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

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

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60 Upvotes

r/geology 21h 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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656 Upvotes

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


r/geology 1d 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?