cross-posted from: https://lemmy.world/post/32622211

xkcd #3112: Geology Murder

Title text:

After determining that his body was full of pipes carrying iron-rich fluid, our current theory is that the dagger-shaped object precipitated within the wound.

Transcript:

Transcript will show once it’s been added to explainxkcd.com

Source: https://xkcd.com/3112/

explainxkcd for #3112

Original Video Title:
The Strange Island within a Lake within an Island within a Lake within an Island

• Invidious
• Youtube

https://www.youtube.com/watch?v=VThzfnYXPbM

Hawaii's Kilauea volcano just produced its most spectacular lava fountains in decades, sending molten rock in a wide arc more than 1,000 feet into the air. This occurred alongside a 14,000 foot high eruption plume which was easily seen from the summit of Mauna Kea. Today's video will discuss Sunday's eruption which created scenes that almost look fake due to how unusual they were.

Archive link: https://archive.is/SmCzU

Please do not explore the evacuated locations and currently bare riverbed as you could be swept away without any prior warning

Evacuation and Affected Locations

Country: Canada
Province: BC
Local Regions: Chilcotin River, Fraser River

Additional Sources

• EmergencyInfoBC
• Globalnews.ca
• CTV News Vancouver

Geology Hub: https://www.youtube.com/watch?v=LoRx-tUzbjw

Interesting description of the 3 phases involved when such deep mantle earthquakes have a theoretical limit of 3.8 magnitude.

Geology Professor Shawn Wilsey on location with a twisted slate rock unit in Idaho. (8:12 minutes)

https://en.wikipedia.org/wiki/Foliation_(geology)

Foliation with slatey cleavage perpendicular to bedding - Giggity Giggity

Some background on the earthquake swarm off the Vancouver Island coast.

Forbidden Fibers

These look to me like regular intrusive iron rich veins. Boulder is about 1m across, and sandstone/mudstone, area is volcanic.

I am not a geologist.. any ideas?

Brand new amateur collector here, I have a piece of a rock that im trying to identify that is covered in what seems to be iron, which is hiding this bright blue rock ive never seen before, however the rock is full of bubbles and is extremely jagged, is there a way to examine and polish without harming the shape