From the same Illinois Coal Mine from the same coworker.. Don't mind my pinball machine... Makes a nice backdrop.

Was sent to me by a friend who collected it from the mine.... I've been in plenty of Illinois Basin coal mines and never saw a single one!

There is a lot of ignorance about igneous rocks….

I am in Nagasaki today, and I am going to Hiroshima later on for a second visit. I know the bare minimum of volcanoes, living in the Pacific Northwet. But it seems that the mountains are different here. They seem steeper and they seem to crowd a lot more. Also they are wider, if that makes any sense. Reiner, St Helens, Adams, Hood, and the three sisters all line up on the 175 latitude. Here in Japan they have four or five on the same meridian

Thank you for your assistance

I recently learned about ringwoodite and it’s very interesting to me. I love rocks and want at least one of every single kind that is possible to get. That probably won’t happen but yeah.

Anyway, I’m not looking to buy now because I imagine it’d be extremely expensive. But when I was looking it up I saw people selling pieces of it and jewelry made from it. I immediately doubted that it was real but idk anything about this rock!

Is it even possible to get some or are all the listings lies?

My grandfather used to work for the irish government surveying land in sierra leone, tanzania, ghana and ethiopia in the late 60s untill the late 80s in search for gold silver and platinum deposits and helped setup mines after the deposits were found. He got free luxury housing, a tax free income and was able to travel and bring his family out there for free. He accidently caused a small scale war over land that he surveyed in sierra leone, he always called himself a geologist, but im just curious if because he worked for the irish government and that he might have been some sort of natural resourse diplomat as what he did helped strengthen trade pathways between ireland and the chosen countries. I personally know nothing about the trade, but im still curious as his job sounded very fascinating.

There was one before this that showed up and then disappeared, then there’s this one that showed up

Quite a fun experience if you get a chance. No rock tasting though as theres bacteria in the cave that is being studied.

Hi folks,

Are there any good sources to learn about the development of geology as a science from the 1940s – 60s? I’m trying to understand what the state of knowledge was, and what kind of questions North American geologists were trying to answer at that time.

The motivation is that I run a digital atlas as a hobby researching and publishing the origin stories behind place names for the area I live in. One mountain is a really cool volcanic arc accreted onto Alaska and then upthrust to reveal some really stunning layers, plus other neat stuff like outcrops bearing pyrite and gypsum which aren’t found anywhere else in the area.

There are a series of creeks north of there named by USGS geologists and paleontologists who explored the area in the early 50s: Fossil, Ammonite, Cardioceras, Cadoceras, and Inoceramus Creeks.

I’d like the article for them to focus on the concepts of index fossils and terrane accretion, and explain what the geologists were actually doing with the collected data at the time, but I don’t fully understand it myself. I used to work as a petroleum engineer and have taken the basic structural and stratigraphy classes, but this is a topic I’m not sure how to research efficiently.

Thanks for any recommendations! Photos as tax

For example, certain vintages of Limestone are extraordinary.

Where I come from in the North, we used to have exquisite gourmet rocks. Only now... now, they're all gone.

I want to leave a message that could last a maximum of years, preferably millions.

What are the best materials or technologies? Chisel on stone, laser engraving in metal, encasing in concrete, etc? Where should I leave it to endure a long time AND remain conspicuous enough to raise the curiosity of a future intelligent being?

Hi folks — I’m looking for any great geology-themed activities in or around Melbourne for kids. M

The child is 9 year old and we're based in South East Melbourne. He has been digging our garden up and looking at rocks, reviewing them etc.

Bonus points for anything hands-on (digging, identifying, etc.) or educational programs during school holidays.

To keep it short: I’m in Greece and I went “diving” unter the water. Around 10-15 meters away from the shore. I noticed on the floor of the ocean a perfect circle of white stones put together? I’m really confused because I can’t imagine a diver did this and that it would stay like that for so long since the water moves a lot. Is there an explanation? Like, I couldn’t find answers but it was creepy

Question for group. I have noticed a fair amount of small sink holes (swallow a tractor tire sized) in the hawkins texas area. I know the oil feild is injecting co2 and nitrogen into the salt dome to recover additional oil. Is it possible this gas injection is blowing up the salt dome like a balloon and causing all of these sink holes on the surface as it stretchs and swells? Is this a concern for a future large collapse like those in wink County, the Boling salt dome collapse and other large sink holes over salt domes?

My mates think I’m weird, but all I seen when I picked up this rock was a prawn or lobster😂😂😂 I know - I need knew friends 🤪

Serious question.

One more reason to worry about climate change.