Matching Pairs Carbon storesOnline version Sizes of Carbon Stores by Raphael Heath 1 Soils 2 Intermediate and deep oceans 3 Surface Ocean 4 Plants in oceans 5 Plants on land 6 sedimentary rocks 7 Atmosphere 8 Earth's crust 9 Fossil fuels 100,000,000 Pg 1,000,000 Pg 1,500 Pg 38,000 Pg 750 Pg 5,000 to 10,000 Pg 3 Pg 560 to 610 Pg 725 - 970 Pg