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