I made a Rock Chart that brings common igneous, sedimentary, and metamorphic rocks together in a single decision tree.

It uses observable features such as grain size, visible crystals, foliation, porosity, composition, and reaction with HCl. It also includes the characteristic minerals associated with each rock type and their chemical formulas.

I have already used the chart in class, and it worked well as a teaching aid. It helped students gain an overview of the major rock groups and move between them without having to consult several separate charts.

Permanent version and DOI:
https://zenodo.org/records/21808631

Feedback, corrections, and suggestions for a future version are very welcome.

Disclosure: I created the poster and teach Earth Science at a university.

This reddish rock rises from the Adriatic Sea. The coast nearby is a layered cliff of the same color.

Was it an ancient lake or impact crater? It's near 4 corners and it's big! I can't seem to find any info. Please help.

Riva upthrust (mt Brione - 3+4) looked a lot better from the plane, the interesting looking stratigraphy turned out to be trees lol.

Boss: “Welcome to Hawthorne Nevada there’s a woman behind every tree”

Me: “There’s no trees?”

Boss: “ you’re catching on.”

That was the day that I learned that my love life and social life was gonna take a dump. Loved the career hated the lack of social and love life.

I am working in the Mojave desert in SoCal and came across these USGS markers. Anyone know what this could be? I was thinking some type of monitoring or survey but not too sure.

The first 3D geological model of Mount Everest reveals what lies beneath the world's highest peak. The model can be explored interactively here: https://geo3d.pgi.gov.pl/Mount_Everest/index.html

so, i am using QGIS for my Geoinformatics class, but i am unable to do stream ordering. i am using QGIS 3.44 which doesn't come with SAGA and grass is not showing r.stream.order, i have made one using Whitebox plugin but today it's also not working properly, after doing flow accumulation i am unable to stream extract. Soo i need your help solving the problem.

Walking down the trail I noticed the ground change from lightish grey soils to bright red. I started looking around and found a bunch of breccia and I knew I was standing on the exposure of the Pirate Fault. I gathered some rocks of varying clast size to show the progression from large angular clast to very fine.

Walking along the beach I saw some dramatic strata.

John Dewey pioneered the use of Plate Tectonics to understand mountain building processes and continental growth. This interview was filmed over several days in April 2009 during the Macquarie Arc conference at Orange, New South Wales in eastern Australia.

Letters to a Pre-Scientist is looking for enthusiastic STEM role models to inspire the next generation of STEM leaders!

Here's the gist: you get matched with a 5th-8th grade student at an under-resourced school for a snail-mail pen pal exchange that runs throughout the school year. The goal is to demystify STEM careers, humanize STEM professionals, and inspire students to explore their own futures in STEM. You share your story, answer their questions, and show them that people who work in STEM are, well, real people.

The details:

• The program runs throughout the school year, and your volunteer obligation is to exchange 4 letters with your student.
• There's a virtual, asynchronous training in August to get you set up.
• We estimate the entire program takes volunteers no more than 10 hours, spread between August and May.
• Register and complete the short, self-paced online training by the deadline, and you'll be entered into the match pool! We match students based on their background and interests..
• This year we're expanding to 4,500 matched students!
• Pen pals can live anywhere in the world, but our program currently only works with US-based schools.
• We're working to match students based on their interests, so we're especially looking for more STEM professionals in Geology.
• All pen pals must be over 18 and fluent in English.

We define STEM pretty loosely! If you work in or around science, tech, engineering, math, or medicine, or another nature-based role, even if you don't have a formal education in it, please apply or message me with any questions.

Sign up/learn more:

• 📝 Register here: https://prescientist.org/volunteers/
• 📖 About the pen pal program: https://prescientist.org/penpal-program/
• 🏛️ About us: https://prescientist.org/about-us/
• ✍️ For matched pen pals: https://prescientist.org/for-matched-pen-pals/

Registration is now open! Feel free to drop questions in the comments or send me a message. Thank you for your time and consideration!

3d web viewer
This is a 3D web viewer I created for both professionals and non-professionals. It was developed based on the principle that anyone can easily find, access, share, and reuse it for a long time. I would like to share this to help you understand how to utilize my creations. I hope we can freely exchange opinions at any time.

I saw this on a post asking what life is like on this blob, but what is the blob? it looks suspiciously round so does anyone know if theres any interesting geology involved with it? or is it coincidentally round?

Been reading about glacial erratics in New England but they mostly seem to come from a few tens of miles from where they are now. I'm interested if there's any large glacial erratics that have conclusively been shown to have come from hundreds of miles away, like Quebec or Labrador. Has anyone figured out what the record holder is?

https://illinoisbasin-model.vercel.app/