Figure F5. Comparison of C/N (organic carbon; total nitrogen) ratios to organic carbon concentrations in Miocene, Pliocene, and Pleistocene sediments from Sites 1087, 1085, 1084, and 1082 in Cape and Walvis Basins and Sites 532 and 1081 on Walvis Ridge. Improved preservation of marine organic matter is accompanied by diagenetically elevated C/N values.