An article republished from June of 2020 about using electrosensitivity to identify possible cave passage in Colorado

Hello, fellow enthusiasts. I am reading The Geology of Australia book by Robert Henderson (& David Johnson), and am trying to figure out what is the area in between the dotted lines that isn't North-West-South Australian craton. It is mentioned that the continent is, in its core, made up of three main cratons, which are wonderfully displayed and elaborated upon. Though, what about the cratonic crust outside of the main cratons? Why is only three cratons talked about when there is still much more space to explain? Especially, that archean/proterozoic crusts protrude outside the dotted line, and vice versa. I am confused as to why such a great portion of the continent is left without elaboration.

I have found photos which help visualise and partially clue my question, though I am still left wondering.

Looking to see if anyone knows what could cause this interesting deposition(?)

I'm a newer Envi Sci/Geoscience student and took these photos while hiking. The first 2 pictures show the walls of this little area, with the 3rd showing the stream flowing through the center.

This was around an area that had recent (~11,000 yo) glacial activity.

Thanks!!

edit: Totally realized, I forgot to add! These were taken around Devil's Lake State Park in Wisconsin. :)

near an abandoned mine at Asgata. used to mine copper and sulfur

Here are some inages I took on my week up there (26th septembre to 3rd october) as a result of my graduation (12th november) from my degree in Envionmental Sciences.

First time hunting finds for these geologic erratic specimens. The really bright one had freshly washed ashore.

Not a technical person though but recent events in Nepal are all in proximity to the epicentre of Gorkha Earthquake(2015). Rasuwa(August 2026), Manang/ Mustang(Sep 2026) and Gorkha(Today). I wanted to ask what is the probability of recent hazards being related of the earthquake of 2015.

So we are drilling limestone in the limestone terrain area, Eastern Ghat Mobile Belt, and from the drilled core we find the needle shaped like mineral developed in the limestone. What it could be and how it may have formed ?

0/10 not even so much as an emission of ash.

I live right on the crack between a footwall (mountains) and the hanging wall (my yard)

The Wandan mud volcano in southern Taiwan had a minor eruption starting around 3am today at vents near the mud volcano temple.

It last erupted in July 2026 and has had numerous small eruptions in the last few years.

Video courtesy of my friend 張寶惠, the temple caretaker.

A Denver museum of nature and science documentary covering the discovery of Silent Splendor in the state of Colorado

View in the Alpstein mountain range. Part of the north east alps in switzerland. Always amazing to me to see something that once lay flat beeing moved and manipulated like this.

Question: what determines the layer thickness of the rock layers. Like i see several meter thick layers and some only very thin ones. What Environment influences the thickness most.

Regards

How many can you name?

The other day I went up to the Folgefonna glacier close to Jondal, Norway, and I'm always surprised by how there are so many rocks that aren't like the typical rust red iron rocks I see in other places, but they have a streak of purple instead. They also break apart like something is oxidising. I really know nothing about these things, but if anyone wants to say a few words about what we're looking at, it would make me happy. According to the map at Norway's geological survey, this area is mostly migmatite, quartz, granite and a bit of ultramafic rocks. I did upload a video of how you get to the trailhead, but that requires zero geological knowledge. :P

Hey everyone, I’m a mid-20s remote sensing professional currently working on an agtech project. I’ve been using some hyperspectral systems and find a lot of the geological applications really interesting, so now I’m kind of considering a possible career change into exploration geo. Would it be possible to get a masters in geology even though my undergrad is in geography? I have a pretty well-rounded background with lots of field work, chemistry, etc, but little actual geology. Obviously I would take prerequisite courses and stuff if necessary, but I can’t imagine going back for a full geology undergrad is worth it. Just wondering if anyone else has done this or if there are any masters programs in particular that are a good fit for this. Thanks in advance for any help or advice!

A clip from my volcano comedy special: https://www.youtube.com/watch?v=72IwnxnejfE

There are some majestic serpentinite formations around here, but sometimes it's the little things that make you stop and stare...

Found on a walk in Marin County, CA