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