Show simple item record

dc.contributor.authorPlet, Chloe
dc.contributor.authorGrice, Kliti
dc.contributor.authorScarlett, Alan
dc.contributor.authorRuebsam, W.
dc.contributor.authorHolman, Alex
dc.contributor.authorSchwark, Lorenz
dc.date.accessioned2023-01-24T07:08:20Z
dc.date.available2023-01-24T07:08:20Z
dc.date.issued2020
dc.identifier.citationPlet, C. and Grice, K. and Scarlett, A.G. and Ruebsam, W. and Holman, A.I. and Schwark, L. 2020. Aromatic hydrocarbons provide new insight into carbonate concretion formation and the impact of eogenesis on organic matter. Organic Geochemistry. 143: ARTN 103961.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/90155
dc.identifier.doi10.1016/j.orggeochem.2019.103961
dc.description.abstract

Investigations of aromatic biomarkers extracted from carbonate concretions can contribute to characterization of the enhanced microbial activity that mediates carbonate concretion formation. This microbial footprint can be further inferred from the stable isotopic values of carbonate (δ13C) and pyrite (δ34S). Here, we used a combination of GC–MS and GC × GC-ToF-MS to compare the aromatic fractions of two Toarcian carbonate concretions from the H. falciferum ammonite zone of the Posidonia Shale (SW-Germany) and their host sediment. The results revealed that n-alkylated and phytanyl arenes were enhanced in the concretions, relative to the host sediment. These findings support a very early diagenetic (eogenetic) microbial source for alkylated and phytanyl arenes derived from the microbial ecosystem mediating concretion formation. In contrast, aromatic compounds formed by thermal maturation (e.g. polycyclic aromatic hydrocarbons, aromatic steroids, organic sulphur compounds) remained invariant in host rock and concretion samples. When combined with bulk sediment and concretion properties, the distribution of aromatic compounds indicates that eogenetic microbial activity upon concretion growth does not diminish organic matter quality.

dc.languageEnglish
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD
dc.relation.sponsoredbyhttp://purl.org/au-research/grants/arc/DP130100577
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subjectScience & Technology
dc.subjectPhysical Sciences
dc.subjectGeochemistry & Geophysics
dc.subjectPhytanyl toluene
dc.subjectPhytanyl benzene
dc.subjectStable isotopes
dc.subjectGC x GC-ToF-MS
dc.subjectMicrobial eogenesis
dc.subjectPAHs
dc.subjectPOSIDONIA BLACK SHALE
dc.subjectSW-GERMANY
dc.subjectSEA-LEVEL
dc.subjectLOWER TOARCIAN
dc.subjectISOTOPIC COMPOSITION
dc.subjectANAEROBIC OXIDATION
dc.subjectDIAGENETIC GROWTH
dc.subjectCLAY FORMATION
dc.subjectANOXIC EVENT
dc.subjectSOUTH CHINA
dc.titleAromatic hydrocarbons provide new insight into carbonate concretion formation and the impact of eogenesis on organic matter
dc.typeJournal Article
dcterms.source.volume143
dcterms.source.issn0146-6380
dcterms.source.titleOrganic Geochemistry
dc.date.updated2023-01-24T07:08:19Z
curtin.departmentDepartment of Chemistry
curtin.departmentSchool of Earth and Planetary Sciences (EPS)
curtin.accessStatusOpen access
curtin.facultyFaculty of Science and Engineering
curtin.contributor.orcidGrice, Kliti [0000-0003-2136-3508]
curtin.contributor.orcidScarlett, Alan [0000-0002-9559-2154]
curtin.contributor.orcidHolman, Alex [0000-0001-5687-1268]
curtin.contributor.researcheridGrice, Kliti [L-2455-2016]
curtin.identifier.article-numberARTN 103961
dcterms.source.eissn1873-5290
curtin.contributor.scopusauthoridGrice, Kliti [7005492625]
curtin.contributor.scopusauthoridPlet, Chloe [57148110100]
curtin.contributor.scopusauthoridScarlett, Alan [8401941500]
curtin.contributor.scopusauthoridHolman, Alex [55369807700]
curtin.contributor.scopusauthoridSchwark, Lorenz [7004473576]


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record

http://creativecommons.org/licenses/by-nc-nd/4.0/
Except where otherwise noted, this item's license is described as http://creativecommons.org/licenses/by-nc-nd/4.0/