Impact of weathering processes on n-alkane pattern in badlands
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2023
Authors
Stefanović, MilicaŠajnović, Aleksandra
Kašanin-Grubin, Milica
Vergari, Francesca
Troiani, Francesco
Moreno-de-las-Heras, Mariano
Gallart, Francesc
Desloges, Joseph
Jovančićević, Branimir
Article (Published version)
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Show full item recordAbstract
The aim of this study is to investigate the influence of weathering processes on the distribution of n-alkanes in
unweathered and weathered samples of badland material. Organic matter (OM) of both the weathered and
unweathered zones in badland environments is derived from the same sources such any differences between the
n-alkane pattern of the two zones can be attributed to the impact of weathering processes under different climate
conditions. Organic geochemical and mineralogical characterizations were employed to investigate twenty-one
samples from weathered badland environments in Italy, Spain, and Canada that originally derive from marine,
distal alluvial, and fluvial depositional settings, respectively.
According to the distribution of n-alkanes and diterpanes, unweathered samples from Italy have an original
mixed aquatic-terrestrial origin of OM, with a variable (low to moderate) contribution of terrestrial plants as
precursors, while unweathered samples from Spain pred...ominantly contain OM originating from submerged/
floating macrophytes deposited under reducing conditions. Unweathered samples from Canada predominantly
consist of terrigenous OM.
Intensity of changes in n-alkanes distribution when subjected to weathering depends on the type of precursor
biomass and quantity of smectite. Predominantly terrigenous OM under semi-arid conditions shows the highest
affinity for adsorption is in contact with smectite surfaces. Mid- and long-chain odd n-alkanes have a tendency to
build colloidal particles with polar organic compounds such as fatty acids by strong binding and thus their
preservation from degradation is possible.
Keywords:
Climate conditions / Saturated hydrocarbons / Microorganisms / OM origin / SmectiteSource:
CATENA, 2023, 231, 107352-Publisher:
- Elsevier
Funding / projects:
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-MESTD-inst-2020-200026)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200287 (Innovation Center of the Faculty of Technology and Metallurgy) (RS-MESTD-inst-2020-200287)
- Ministry of Science, Technological Development and Innovation of the Republic of Serbia, institutional funding - 200168 (University of Belgrade, Faculty of Chemistry) (RS-MESTD-inst-2020-200168)
Institution/Community
Inovacioni centarTY - JOUR AU - Stefanović, Milica AU - Šajnović, Aleksandra AU - Kašanin-Grubin, Milica AU - Vergari, Francesca AU - Troiani, Francesco AU - Moreno-de-las-Heras, Mariano AU - Gallart, Francesc AU - Desloges, Joseph AU - Jovančićević, Branimir PY - 2023 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/6570 AB - The aim of this study is to investigate the influence of weathering processes on the distribution of n-alkanes in unweathered and weathered samples of badland material. Organic matter (OM) of both the weathered and unweathered zones in badland environments is derived from the same sources such any differences between the n-alkane pattern of the two zones can be attributed to the impact of weathering processes under different climate conditions. Organic geochemical and mineralogical characterizations were employed to investigate twenty-one samples from weathered badland environments in Italy, Spain, and Canada that originally derive from marine, distal alluvial, and fluvial depositional settings, respectively. According to the distribution of n-alkanes and diterpanes, unweathered samples from Italy have an original mixed aquatic-terrestrial origin of OM, with a variable (low to moderate) contribution of terrestrial plants as precursors, while unweathered samples from Spain predominantly contain OM originating from submerged/ floating macrophytes deposited under reducing conditions. Unweathered samples from Canada predominantly consist of terrigenous OM. Intensity of changes in n-alkanes distribution when subjected to weathering depends on the type of precursor biomass and quantity of smectite. Predominantly terrigenous OM under semi-arid conditions shows the highest affinity for adsorption is in contact with smectite surfaces. Mid- and long-chain odd n-alkanes have a tendency to build colloidal particles with polar organic compounds such as fatty acids by strong binding and thus their preservation from degradation is possible. PB - Elsevier T2 - CATENA T1 - Impact of weathering processes on n-alkane pattern in badlands SP - 107352 VL - 231 DO - 10.1016/j.catena.2023.107352 ER -
@article{ author = "Stefanović, Milica and Šajnović, Aleksandra and Kašanin-Grubin, Milica and Vergari, Francesca and Troiani, Francesco and Moreno-de-las-Heras, Mariano and Gallart, Francesc and Desloges, Joseph and Jovančićević, Branimir", year = "2023", abstract = "The aim of this study is to investigate the influence of weathering processes on the distribution of n-alkanes in unweathered and weathered samples of badland material. Organic matter (OM) of both the weathered and unweathered zones in badland environments is derived from the same sources such any differences between the n-alkane pattern of the two zones can be attributed to the impact of weathering processes under different climate conditions. Organic geochemical and mineralogical characterizations were employed to investigate twenty-one samples from weathered badland environments in Italy, Spain, and Canada that originally derive from marine, distal alluvial, and fluvial depositional settings, respectively. According to the distribution of n-alkanes and diterpanes, unweathered samples from Italy have an original mixed aquatic-terrestrial origin of OM, with a variable (low to moderate) contribution of terrestrial plants as precursors, while unweathered samples from Spain predominantly contain OM originating from submerged/ floating macrophytes deposited under reducing conditions. Unweathered samples from Canada predominantly consist of terrigenous OM. Intensity of changes in n-alkanes distribution when subjected to weathering depends on the type of precursor biomass and quantity of smectite. Predominantly terrigenous OM under semi-arid conditions shows the highest affinity for adsorption is in contact with smectite surfaces. Mid- and long-chain odd n-alkanes have a tendency to build colloidal particles with polar organic compounds such as fatty acids by strong binding and thus their preservation from degradation is possible.", publisher = "Elsevier", journal = "CATENA", title = "Impact of weathering processes on n-alkane pattern in badlands", pages = "107352", volume = "231", doi = "10.1016/j.catena.2023.107352" }
Stefanović, M., Šajnović, A., Kašanin-Grubin, M., Vergari, F., Troiani, F., Moreno-de-las-Heras, M., Gallart, F., Desloges, J.,& Jovančićević, B.. (2023). Impact of weathering processes on n-alkane pattern in badlands. in CATENA Elsevier., 231, 107352. https://doi.org/10.1016/j.catena.2023.107352
Stefanović M, Šajnović A, Kašanin-Grubin M, Vergari F, Troiani F, Moreno-de-las-Heras M, Gallart F, Desloges J, Jovančićević B. Impact of weathering processes on n-alkane pattern in badlands. in CATENA. 2023;231:107352. doi:10.1016/j.catena.2023.107352 .
Stefanović, Milica, Šajnović, Aleksandra, Kašanin-Grubin, Milica, Vergari, Francesca, Troiani, Francesco, Moreno-de-las-Heras, Mariano, Gallart, Francesc, Desloges, Joseph, Jovančićević, Branimir, "Impact of weathering processes on n-alkane pattern in badlands" in CATENA, 231 (2023):107352, https://doi.org/10.1016/j.catena.2023.107352 . .