My Blogs (olelog) are mainly based on my daily reading of earth science news.
Here on whatonearth.olehnielsen.dk I try to weave some of the pieces together to a greater whole with added background info.
The carbon cycle is outlined in the (UNEP) figure below. The majority of carbon is found in rocks, either as carbonate, usually associated with calcium in limestones (as CaCO3), or as dispersed organic carbon, in sedimentary rocks, particularly shales. About three quarters of the total carbon in the outer regions of the Earth is contained in carbonates containing inorganic carbon and one quarter in rocks containing dispersed organic compounds. The combined carbon content of all other carbon reservoirs (atmosphere, plants and animals, soil, fossil fuels, dissolved compounds) comes to less than 1% of the total.
Carbon flow in soil
Last modified on
If you have any problems with this page or wish to comment on the site, please e-mail the webmaster