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January 30 @ 4:00 pm - 5:00 pm CST

EEPS Seminar:  Todd Longbottom, Baylor University, Department of Geosciences


Title:  Sedimentary Organic Matter Diagenesis: Oxidative Transformations and Dynamics upon Pyrolysis

Abstract:  The organic matter fraction preserved in ancient sediments is the largest carbon pool on earth, and holds immense importance in the context of global biogeochemical cycling and as petroleum source rock. This talk represents an organic geochemical approach to furthering the understanding of several diagenetic processes that contribute to the nature and properties of organic matter in marine, lacustrine, and soil environments.  Specifically, the post-depositional microbial oxidation of organic matter in outcrop, and the experimental thermal alteration of organic matter (programmed anhydrous and hydrous pyrolysis) were explored, as these diagenetic pathways represent important transformative processes and rate modifiers in the global carbon cycle. Specific attention is paid the kerogen fraction, or the fraction of sedimentary organic matter operationally-defined as insoluble in common organic solvents, which is the most abundant, structurally-diverse, and underutilized component of fossil organic matter. Future research involving the development of novel methods for the estimation of the proportion and composition of petrogenic carbon (OCpetro) in riverine particulate organic carbon (POC), combined with numerical modeling of ecosystem- or global-scale biogeochemical dynamics will be outlined



January 30
4:00 pm - 5:00 pm


100 Keith-Wiess Geological Laboratories
Rice University, 6100 Main Street, MS 126
Houston, TX 77005 United States
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For outside visitors, the best way to get to our department is to come in on Rice Blvd and turn into entrance 20 (intersection of Rice and Kent St.). At the stop sign, you will see a visitor parking lot.  From there, walk east to the department.  The google map below shows exactly where our building is.