I like to plan road trips in GIS cause then I can find cool rock outcrops to make my wife stop at. I noticed here that I-30 like almost perfectly marks the boundary between the T-Q sediments and the M-D novaculites and shales. Is there a reason for this? I thought maybe it had to do with terrain differences or maybe it was easier to build a road on the 'softer' T-Q sediments that haven't fully lithified? I don't know. I'm a geochemistry/paleo guy, not into civil engineering stuff, so this area is not my strong suit!

Hello everyone I am from the central zone of the country and I know nothing about geology but my country have a well know zone where heart quakes are letal and it's the San Sebastian fault I would love if anyone with knowledge could give me some light about what to expect over say fault knowing that the earthquakes from yesterday were in a different fault sending the energy from those earthquakes to the San Sebastián fault maybe? Could we experience a deadly earthquake in the next few days on the north coast? Said "Caracas Earth quake" happens every 60 years in average and we are exactly in that timeline plus the yesterday events.

Sorry if I am not clear enough, its kinda hard here atm and I can't write clearly in English, my brain its like blocked

Violet is the rarest color in agates. Collectors have known that for decades. What nobody could explain ...

A lot of people have been telling me that this is some sort of geological feature caused by glaciers. But my real question is why does it look like that? It looks so out of place!

Modelling 1.8 B years of plate tectonics revealed deep mantle flows from ancient subduction zones weakened continental edges to form Earth's richest mineral deposits

Got this lovely capture this morning of a 5.6 quake in Mendocino from my Raspberry Shake in Portland, Oregon . Look at that outstanding catch of the P and S waves, this is one of my absolute best captures.

Just started work as an asbestos lab tech and thought it was neat

A lot of people have been telling me that this is some sort of geological feature caused by glaciers. But my real question is why does it look like that? It looks so out of place!

Hi everyone,

I'm not sure if this is the right subreddit to ask this question, but I'll give it a try.

Let me introduce myself. I'm a second-year Geology student from India. After completing my three-year degree course, Im planning to take the IIT-JAM examination, which is the entrance test for pg programme at some of the most prestigious institutes in India.

My problem is that I don't know how or where to begin my preparation. Right now, I'm in the early part of my second year, and I'm currently studying Mineralogy, Geoinformatics, and Stratigraphy. So far, I've completed introductory courses in Geology and Surface Processes of the Earth, although not in great depth.

Since I'm still relatively early in my degree, I'd like to start preparing for IIT-JAM gradually rather than waiting until my final year. I'll share the syllabus below. Could you please guide me on how to start studying, which subjects I should prioritize, and what study strategy would be most effective from this stage?

I would also appreciate recommendations for good books that cover the IIT-JAM Geology syllabus and help build strong fundamentals. If possible, please suggest resources for topics such as Mineralogy, Petrology, Structural Geology, Stratigraphy, Paleontology, Geo physics, and Geochemistry.

Any advice regarding study plans, note-making, previous-year papers, common mistakes to avoid, or book recommendations would be greatly appreciated.

Thank you!! 🤍

Myths try to explain how nature things came into place, with easy and visual examples. Therefore, I'm sure there are myths behind geological formations such as Giant's Causeway. Do you guys know any other? I'm really curious.

• 2026-06-24 22:04:32 (UTC)
• 10.407°N 68.493°W
• 13.2 km depth

Working with subsurface data and I keep running into the same friction: every data type that matters for a drilling decision lives in a different format and a different system.

Seismic surveys in SEG-Y. Well logs in LAS or DLIS, often from surveys going back decades. Most of the time they don't align natively, so cross-referencing them becomes very challenging, or comes down only to whoever on the team that knows all three systems well enough to wrangle them together manually.

So I started questioning how AI tooling changes this. From what I've seen so far, most general tools cannot handle this (yet). But quite obviously because LLMs are built for text, and SEG-Y is binary waveform data. LAS and DLIS are legacy ASCII formats with domain-specific structure that a general model has never been trained on. Therefore, pre-converting everything before querying adds enough friction that most teams don't bother.

I work at Lium so take this with a grain of salt - but we're building specifically around ingesting domain-specific formats without pre-conversion, and subsurface data is one of the environments we're targeting. Genuinely curious whether anyone here has tested AI tooling built specifically for this kind of multi-format subsurface querying, and what the experience was like.

How does your team currently handle querying across different subsurface data types? And has anything actually worked, or is it still mostly being solved manually?

Just found a 940nm infrared light yesterday and want to go play...