Research Interests - Paul A. Schroeder


Illite/smectite Research

Below is a list of publications related to the nature of the smectite to illite transition, which has been long recognized as one of the most important geological reactions assoicated with the burial and transformation of clay-rich sediments. The role of nitrogen fixation and release during burial diagenesis and in hydrothermal environments is of interest, particularly from the standpoint of understanding long-term nitrogen cycling and understanding nitrogen's role in hydrocarbon generation.  The basis for this research has mostly been from the study of samples in the deep subsurface in the Gulf of Mexico and in terrestrial hot springs in Kamchatka, Russia.

  1. Diaz, M., Robert, J-L. Schroeder, P. A. and Prost, R. 2010 Far infrared study of the influence of the octahedral sheet composition on the K+-layer interactions in synthetic phlogopites. Clays and Clay Minerals, v. 58(2) 263-271.
  2. Kyle, Jennifer, Schroeder, P.A., and Wiegel, J. 2007 Microbial silicification in sinters from two terrestrial hot springs in the Uzon Caldera, Kamchatka, Russia. Geomicrobiology Journal. v. 24, 627-641.
  3. Kyle, Jennifer and Schroeder, Paul A. 2007 Role of smectite in siliceous sinter formation and microbial texture preservation: Octopus Spring, Yellowstone National Park, Wyoming, USA. Clays and Clay Minerals, v. 55(2): 189-199.
  4. Schroeder, P.A. and Irby, R. 1998 Detailed X-ray diffraction characterization of illite-smectite from an Ordovician K-bentonite, Walker County, Georgia, USA. Clay Minerals, v. 33, 671-674.
  5. Schroeder, P.A., and McLain, A.A., 1998, Illite-smectites and the influence of burial diagenesis on the geochemical cycling of nitrogen: Clay Minerals, v. 33, 539-546.
  6. Schroeder, P.A. and Ingall E. D. 1994 A method for the determination of nitrogen in clays, with application to the burial diagenesis of shales. Journal of Sedimentary Research, v. A64, 694-697.
  7. Schroeder, P.A. 1993 A chemical, XRD and 27Al NMR investigation of Miocene Gulf Coast shales with application to understanding illite/smectite crystal chemistry: Clays and Clay Minerals, v. 41(6). 668-679
  8. Schroeder, P.A. 1992 Far infrared study of the interlayer torsional-vibrational mode of mixed-layer illite/smectite. Clays and Clay Minerals. v. 40(1), 81-91.
  9. Schroeder, P.A. 1990 Far infrared, X-ray powder diffraction and chemical investigation of potassium micas, American Mineralogist. v. 75, 983-991.
  10. Berner, R. A., E. K. Berner, P.A. Schroeder, T. W. Lyons, 1990 Comment and Reply on "Sodium-calcium ion exchange in the weathering of shales: Implications for global weathering budget". Geology v. 18(2), 190.
  11. Ingall, E.D., P.A. Schroeder and Robert A. Berner 1990 The nature of organic phosphorus in marine sediments: New insights from 31P NMR. Geochimica et Cosmochimica Acta, v. 54, 2617-2620.

For a complete listing of publication activities, see my Curriculum Vitae


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