Joints in Gelatin - fracture anatomy with an injection of Plaster of Paris

Geologist Callan Bentley makes a beautiful fracture (a "joint") by injecting Plaster of Paris into a clear gelatin "rock" under compressive stress.

[@N7KOM]

Very nice demo, Callan!

[@quakekatut8641]

I never knew. I'll never look at a fracture the same way again! Thanks for such an informative presentation.

[@gregoryramsey7166]

Man, a night on UA-cam is great stuff. I was very pleased to stumble on this.

[@charlesward8196]

Frickin’ awesome demonstration! And, THREE new vocabulary words: concentric ribs, plumose lines and hackles.

[@johnfaithfull8187]

Fantastic! 👏

[@PlayNowWorkLater]

That was such an amazing demonstration! Helped a lot by your explanation. I had no idea that was what the rest of a dike looked like. I drive by a few magmatic intrusions into granite canyons, darker intrusions that have a much finer crystalline composition than the surrounding granite. But yeah, all I see is the crack like feature as seen from the side. I am a total newb to geology, just do it for fun. Lucky to be surrounded by cool geological features. Granite. Basalt columns. An old volcanic vent. And even a moubtain littered with oceanic fossils. Realizing enjoyed stumbling on your channel. Cheers