https://preview.redd.it/61pdmgomwnwc1.png?width=960&format=png&auto=webp&s=e7b271abee64b656c4219b44a9601099e39594c5

I figure this one was intruded or partially melted but also developed a microfault. Transported via glacier from the Canadian Shield.

EDIT: trying to reupload pic because it wasn't showing up for some reason.

Can you tell me what your experience has been like so far and if it’s job that can be learned on the spot?

I see there are some people that have degrees unrelated to any environmental science working those jobs. I’m hoping my geology degree helps.

Hi everyone,

So, I was out sampling today and came across an interbedded silstone and conglomerate unit. Proximal to these outcrops, there is the most puzzling volcanic rock I have ever seen. It appeared to be conglomeratic with a volcanic ( black, aphanitic) matrix. The matrix was sharp and porous. I was thinking it was possibly a flow breccia, but almost all of the clasts (silica/chert) were rounded to subrounded. Could this mean that the volcanism interacted with the conglomerate?

Relative ages: The volcanics are much younger (by ~100ma.) than the sediments.

Does anybody have an idea as to what I could be seeing?

How would you classify it?

This was the bonus question on my historical geology final. I thought it was fun to answer so wanted to see what some of y'all's thoughts are!

"Ponder the question was evolution of humans and agriculture overall “good” or “bad”, and how would you define/ measure this? I do not have a right answer to grade, but just want you to think."

Hi, would anyone be willing to share their answers for the bree creek quadrangle? I’m working on it currently and I have no idea if I’m heading in the right direction. It’s an independent project of mine currently…

I graduated with a bachelors in geology back in fall 2021 and didn’t do research on the side while in school. Since then I’ve been working in the nonprofit arts education field where I’ve worked as a teaching assistant and teaching artist which entails visiting public schools and teaching art and dance.

I applied for a project analyst job that seems pretty manageable to do based off the job description, but I saw someone on LinkedIn with the exact same job from the same company with an environmental studies/international affairs degree, and some research experience, I’m starting to think the research experience is necessary.

Do I have a shot at all?

Check out this video around 18:30 https://www.youtube.com/watch?v=Lngf0N8OrN0

It's a youtuber that goes around the grand canyon (because that's a thing apparently) , and he found those rocks that look like coral reefs.

I’ll be on vacation in Iceland in a few months and will be touring with a geologist. Is there anything I should ask them?

I’d like to know bc I’m thinking about it.

Hey everyone, I’m a transfer student (CCC to UC). I’ve been admitted into Berkeley and Santa Barbara for geology and am wondering if anybody can provide insight on those geology programs.

I live in SB, but grew up in the bay, so either will be a very familiar place.

How do the geology programs compare? Can anybody help? My main interests are volcanology and hydrogeology.

Have geologists predicted what the earth’s landmasses will be like in millions of years?

Hello everyone, sorry if this is a bit off-topic for this sub, but I wanted some help with a datapack I making. I'm a complete layman on the topic of geology, so that's why I came here, to possibly get some help and understand what I can do.
Short version is this, I wanted to add more recipes to make more stone blocks renewable and accessible, in the same line we have for stuff andesite, diorite and granite, as you can see below:

https://preview.redd.it/8fwpwsxkbfwc1.png?width=198&format=png&auto=webp&s=33aa753a39d8f318566960bb509e8a4a30fde3b3

The rocks I would like apply this to are basalt, blackstone, calcite, deepslate, dripstone, and tuff. You can suggest combinations of materials could be plausible enough for the game, or explain some relations between these rocks if you find those could help me as well.

https://preview.redd.it/aaxpfynjcfwc1.png?width=192&format=png&auto=webp&s=d14cfcf1f3e49ac8d078faaf32ee7a0bbf76eaa5

If rock striations were formed by incredible pressure, such as from the weight of an ocean, rather than being layered by addition, it would suggest a different geological process at work. Here's how such a scenario might play out:

1. Compressive Forces: Instead of layers being deposited over time, the rock would experience intense compression from the pressure exerted by the ocean or other geological forces. This compression would cause the rock to deform and possibly fracture in certain directions, resulting in striations aligned with the direction of compression.

2. Metamorphism: The intense pressure would likely cause the minerals within the rock to recrystallize and reorient themselves, a process known as metamorphism. This could result in the formation of new minerals and textures within the rock, altering its appearance and composition.

3. Fold Structures: If the compression was not uniform, it could lead to the formation of fold structures within the rock layers. These folds would manifest as bends or curves in the rock, with associated striations reflecting the direction and intensity of the compressive forces.

4. Tectonic Activity: In areas of active tectonic activity, such as near plate boundaries, intense pressure from converging plates can cause rocks to fold, fault, and undergo other forms of deformation. This could contribute to the formation of striations in the rock layers.

Overall, while the specific mechanisms would differ from those involved in traditional sedimentary layering, the formation of striations through compression is certainly feasible within the context of geological processes involving intense pressure and deformation.

Hello everyone. One question bothers my mind and I can't really solve this problem on my own. Close to where I live in Germany there is a beautiful landscape called "Elbe Sandstone Mountains".

I learned that most of the sandstone formed about 100 million years ago. It is known that there was a shallow sea above Germany that time and in it, the sandstone formed. But the problem is: plate tectonics is moving continents around. That means, the 100-million-years-ago-sea (meaning the part of the continental plate which today is Germany) must have been at a very different part of the globe back in that times.

I found a great animated map which shows the contours of todays countries and the "surface" which was on it millions of years ago. But I want the information the other way around: Where was the surface I step my foot on today located 100 million years ago?

This must be a very fundamental and widely answered question in geology. Because if we want to find out about the formation of whatever outcrop we look at today, a key question would be where it was located back in the day. There would be huge differences in the forming conditions if it was located near the poles or near the equator. Is there a website / tool / book on it? Maybe someone can give a keyword on that kind of research or modelling?

I found this Zircon in one of my samples, this is one of the bigger ones I've ever found (this was 10x zoom on the scope); I''ll probably put it in our SEM too at some point.

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I live in Los Angeles and would like to find out how deep the bedrock is under my land. It's about 2 acres, so I would rather get a map than a collection of a few random boreholes. There should be some form of seismic or ground-penetrating radar tech that I could buy or hire someone to try for me. I found a company with a device called "Tromino" that seems to do this...in France...but they don't seem to list prices for their device.

Pointers appreciated.

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Alders: the most likely to catch your clothes, break your phone, and steal your hat. Biogeochemistry in mineral exploration by Colin E. Dunn, published 2007.

how can you take good pics of rocks thin section under a petrographic microscope!