Anonymous at Sat, 22 Mar 2025 10:22:34 UTC No. 16625691

i love shield volcanoes!!

Anonymous at Sat, 22 Mar 2025 10:40:30 UTC No. 16625705

>>16625691
Shield volcanoes are cool, the lower silica content and higher temperature means the magma can flow freely and make for cool pictures. Though since it's always flowing you don't get cool rocks filled with big crystals like you would in a composite volcano.

Anonymous at Sat, 22 Mar 2025 12:57:23 UTC No. 16625766

>>16625682
Does anyone have an idea what rock this is? It should be from the Late Jurassic and I measured a density of 1.5 g/cm3, despite it doesn't look porous. I am not sure what rock could have such a low density that look like that. Also what are those black areas?

Anonymous at Sat, 22 Mar 2025 13:47:33 UTC No. 16625789

>>16625766
I failed to measure the density correctly.. The density is actually ~ 2.7 g/cm3. So I assume it is some kind of limestone

Anonymous at Sat, 22 Mar 2025 14:14:17 UTC No. 16625803

>>16625682
sugilite looks pretty cool

Anonymous at Sat, 22 Mar 2025 14:31:25 UTC No. 16625813

>>16625766
It kind of looks like shale to me, the flaky texture, and also I'm pretty sure I'm seeing some mica in it, possibly both muscovite from the light flakes, and biotite in the darker flakes.

Anonymous at Sun, 23 Mar 2025 02:40:33 UTC No. 16626324

>>16625682
Is lignite sedimentary or metamorphic?

Anonymous at Sun, 23 Mar 2025 03:12:24 UTC No. 16626338

>>16626324
who's steve jobs?

Anonymous at Sun, 23 Mar 2025 03:21:31 UTC No. 16626341

>>16626338
ligma jobs, gotem.

Anonymous at Tue, 25 Mar 2025 17:19:00 UTC No. 16628311

>>16625682
When will we send a probe to the upper mantle?
https://iodp.org/docs/workshops/reaching-the-mantle-frontier-moho-and-beyond-presentations/242-13-self-sinking-capsules-to-investigate-earth-s-interior-ojovan/file