Figure F35. Plot of source rock pyrolysis hydrogen index and Tmax values for lithostratigraphic Unit III and Subunits Iva–IVc. Fields for Types I (waxy), II (algal/microbial), and III (land plant/detrital) organic matter are shown. Compositions of sediment at Site U1409 are dominated by thermally immature algal/microbial and detrital organic matter.
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