However, relatively recently there has also been the discoveries of extraterrestrial sources of kerogen, including in meteorites, Martian samples and planetary nebulae:
It's not clear to me how much to attribute to how much terrestrial kerogen could be present during our planetary formation vs that which is continuously replenished during the carbon cycle.
Anyone know of studies of the relative contributions?
The geologic carbon and kerogen cycle looks to be be:
https://en.wikipedia.org/wiki/Fossil_fuelHowever, relatively recently there has also been the discoveries of extraterrestrial sources of kerogen, including in meteorites, Martian samples and planetary nebulae:
https://en.wikipedia.org/wiki/Kerogen#Extra-terrestrial
It's not clear to me how much to attribute to how much terrestrial kerogen could be present during our planetary formation vs that which is continuously replenished during the carbon cycle.
Anyone know of studies of the relative contributions?