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