Sedimentary organic matter

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Sedimentary organic matter includes the organic carbon component of sediments (including those in aquatic environments) and sedimentary rocks. [1] The organic matter is usually a component of sedimentary material even if it is present in low abundance (usually lower than 1%). Petroleum (or oil) and natural gas are particular examples of sedimentary organic matter (SOM). Marine sediments are one of the largest sources of SOM. [2] [3] Coals and bitumen shales are examples of sedimentary rocks rich in sedimentary organic matter.

The factors which affect preservation vary with the depositional regime, but include the critical interaction between organic and inorganic materials according to local variations. [4]

Origin

Organic matter is essentially synthesized from mineral carbon (CO2) by autotroph organisms living at the boundaries between the geosphere, the atmosphere and the biosphere.

References

  1. ↑ Li, Qi; Zhang, Chao; Shan, Baoqing (2024). "Stability of sedimentary organic matter: Insights from molecular and redox analyses". Environmental Science and Ecotechnology. 22. Elsevier BV: 100470. doi: 10.1016/j.ese.2024.100470 . ISSN   2666-4984. PMC   11402123 .
  2. ↑ Ausín, Blanca; Bossert, Gina; Krake, Nicola; Paradis, Sarah; Haghipour, Negar; Durrieu de Madron, Xavier; Alonso, Belén; Eglinton, Timothy (2023). "Sources and Fate of Sedimentary Organic Matter in the Western Mediterranean Sea". Global Biogeochemical Cycles. 37 (10). doi: 10.1029/2023GB007695 . hdl: 20.500.11850/637175 . ISSN   0886-6236 . Retrieved 2025-08-11.
  3. ↑ Paradis, Sarah; Tiano, Justin; De Borger, Emil; Pusceddu, Antonio; Bradshaw, Clare; Ennas, Claudia; Morys, Claudia; Sciberras, Marija (2024-08-07). "Demersal fishery Impacts on Sedimentary Organic Matter (DISOM): a global harmonized database of studies assessing the impacts of demersal fisheries on sediment biogeochemistry". Earth System Science Data. 16 (8). Copernicus GmbH: 3547–3563. doi: 10.5194/essd-16-3547-2024 . ISSN   1866-3516.
  4. ↑ Hedges, John I.; Keil, Richard G. (1995). "Sedimentary organic matter preservation: an assessment and speculative synthesis". Marine Chemistry. 49 (2–3). Elsevier BV: 81–115. doi:10.1016/0304-4203(95)00008-f. ISSN   0304-4203.
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