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