Geochemical characterization of sedimentary organic matter. Black carbon isolation discussion
L. Sánchez-García, J.R. de Andrés, J.A. Martín-Rubí. Geochemical characterization of sedimentary organic matter. Black carbon isolation discussion. Boletín Geológico y Minero de España. 2006, Vol. 117, p. 571-2006.
Organic Geochemistry provides a variety of proxies that can be used to reconstruct records of marine and continental paleoenvironments
and paleoclimates (Meyers et al., 1997). In this paper, different fractions of organic matter, sequentially extracted from fifteen marine
sediments (lipids; humic acids, HA; black carbon, BC), have been studied by means of elemental (Corg, C/N, heavy metals), isotopic (d13C) and
molecular indicators (lipids, AH, BC). These analyses, along with physical-chemical study of the samples (pH, granulometry, density, etc.),
allow to characterize the studied area from a geochemical and environmental point of view. Pyrolisis-GC/MS of HA and application of two
different BC-estimation methodologies provide interesting information about the most refractory organic matter fraction in the sediments.
Organic Geochemistry provides a variety of proxies that can be used to reconstruct records of marine and continental paleoenvironments
and paleoclimates (Meyers et al., 1997). In this paper, different fractions of organic matter, sequentially extracted from fifteen marine
sediments (lipids; humic acids, HA; black carbon, BC), have been studied by means of elemental (Corg, C/N, heavy metals), isotopic (d13C) and
molecular indicators (lipids, AH, BC). These analyses, along with physical-chemical study of the samples (pH, granulometry, density, etc.),
allow to characterize the studied area from a geochemical and environmental point of view. Pyrolisis-GC/MS of HA and application of two
different BC-estimation methodologies provide interesting information about the most refractory organic matter fraction in the sediments.