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On trees... (mander.xyz)
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[-] ColeSloth@discuss.tchncs.de 51 points 8 hours ago

Also cool that for a period of like 60 million years, nothing decomposed dead trees. As they would die or fall over, they'd just stay there, piling up. This is where most oil came from. The massive amounts of trees stacking up before bacteria and fungus evolved to decomposed them. Imagine 60 million years worth of trees just lying around.

[-] Dogyote@slrpnk.net 20 points 6 hours ago

Didn't those trees become coal, not oil?

[-] DancingBear@midwest.social 1 points 6 hours ago* (last edited 6 hours ago)

I think near water they became oil and far from water they became coal

[-] RunawayFixer@lemmy.world 17 points 4 hours ago

No, most coal comes from plants in swamps, because the water helped preserve the organic matter.

Plants in swamps die -> organic matter on the bottom of the swamp -> peat -> brown coal -> black coal.

Oil apparently comes mostly from plankton.

On the different origins: https://www.carboeurope.org/how-are-fossil-fuels-formed-the-science-behind-oil-coal-and-natural-gas/

[-] InverseParallax@lemmy.world 13 points 4 hours ago

Oil was effectively plankton and other sea stuff.

Coal was forests.

[-] ravenaspiring@sh.itjust.works 10 points 7 hours ago

I love this fact, and am curious where you learned it?

[-] ColeSloth@discuss.tchncs.de 21 points 6 hours ago

I learned it nearly 30 years ago in school. I just did a search and found a link about it, though.

Also, seems that either I remembered wrongly, or my teacher made a mistake, but it seems it was most of the worlds coal; not oil, that came from all the piles of trees from that period.

https://www.thorogood.co.uk/treevolution-how-trees-came-first-and-rot-came-later-in-earths-deep-past/

this post was submitted on 24 May 2025
848 points (98.7% liked)

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