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