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