Originally Posted by Exhaustgases
Some coal may or may not be something that was living. Oil is found at depths where nothing can leak there, due to the layers of hard rock, clay etc. Clay alone will stop and hold most anything, except very hot nuclear material from say fukushima. Oil is constantly being produced by heat and pressure and H2o and minerals in the slurry.
See, these discussions always end up including some "imaginary friend", who made things just right...but always skirting around the fringes of the actual science and geology, with may, might, believe, methane augmented to try to make it seem like there's conjecture about certain things...because really, the imaginary friend did it...and not that long ago.
There's certainly abiotic oil...chemical processes and equilibrium demand it...but to claim it's ALL abiotic is imaginary friend time.
Coal...we can trace it's provenance through it's make-up and organic structure through the grades, and know that what's anthracite was once akin to lignite, and why the same coal seam that they mine here, 2400 feet above sea level extends another few hundred miles inland, a few hundred miles seaboard, and disappears under the oceam some 3,000 feet lower than here.
All covered in ...sedimentary rock, from when it was a giant flood plain...multiple seams, separated in time, and moved about by geological process.