Mineral Surface Control of Organic Carbon in Black Shale

We show that 85% of variation in total organic carbon can be explained by mineral surface area in a black shale deposit from two locations in the late Cretaceous Western Interior Seaway, United States. This relation suggests that, as in modern marine sediments, adsorption of carbon compounds onto clay mineral surfaces played a fundamental role in the burial and preservation of organic carbon. Our data also provide evidence for organic matter within the smectite interlayer. This association implies that organic carbon sequestration in a representative oil-prone black shale facies may be more closely related to patterns of continental weathering and clay mineralogy than to ocean water chemistry or marine productivity.

[1]  B. Teppen,et al.  Potential contributions of smectite clays and organic matter to pesticide retention in soils. , 2001, Journal of agricultural and food chemistry.

[2]  P. Leo.  A Nuclear Magnetic Resonance (NMR) and Fourier-Transform Infrared (FTIR) Study of Glycine Speciation on a Cd-Rich Montmorillonite , 2000 .

[3]  Y. Furukawa.  Energy-filtering transmission electron microscopy (EFTEM) and electron energy-loss spectroscopy (EELS) investigation of clay–organic matter aggregates in aquatic sediments , 2000 .

[4]  S. Derenne,et al.  Protection of organic matter by mineral matrix in a Cenomanian black shale , 2000 .

[5]  M. Kastner,et al.  ORGANIC MATTER PRESERVATION ON CONTINENTAL SLOPES: IMPORTANCE OF MINERALOGY AND SURFACE AREA , 1998 .

[6]  J. Oades,et al.  Comparative organic geochemistries of soils and marine sediments , 1997 .

[7]  M. Bosetto,et al.  Study of the humic-like compounds formed from L-tyrosine on homoionic clays , 1997, Clay Minerals.

[8]  H. Nakazawa,et al.  The Microstructure of Humic Acid-Montmorillonite Composites , 1996, Clay Minerals.

[9]  L. Gianfreda,et al.  Physicochemical Properties of Protein-Smectite and Protein-Al(OH)x-Smectite Complexes , 1995, Clay Minerals.

[10]  J. Hedges,et al.  Sedimentary organic matter preservation: an assessment and speculative synthesis , 1995 .

[11]  D. Laird,et al.  Atrazine desorption from smectites , 1994 .

[12]  L. Mayer.  SURFACE AREA CONTROL OF ORGANIC CARBON ACCUMULATION IN CONTINENTAL SHELF SEDIMENTS , 1994 .

[13]  J. Hedges,et al.  Sorption of organic matter to mineral surfaces and the preservation of organic matter in coastal marine sediments , 1993 .

[14]  A. Kearsley,et al.  Analysis of sedimentary organic materials by scanning electron microscopy: the application of backscattered electron imagery and light element X-ray microanalysis , 1992 .

[15]  R. Newman,et al.  THE OCCURRENCE OF INTERLAYER CLAY‐ORGANIC COMPLEXES IN TWO NEW ZEALAND SOILS , 1986 .

[16]  B. Sageman,et al.  Marine Shales: Depositional Mechanisms and Environments of Ancient Deposits , 1994 .