Next Figure | Table of Contents

Figure F21. Comparison of total organic carbon (TOC) concentrations and Corg/Ntotal values of black shales (defined as >1% TOC) for black shale units of the five sites drilled during Leg 207 on Demerara Rise. Increasing C/N values with higher TOC concentrations probably reflect preservational conditions that favored burial of carbon and recycling of the nitrogenous components of marine organic matter.

Next Figure | Table of Contents