000055795 001__ 55795
000055795 005__ 20210628124747.0
000055795 0247_ $$2Handle$$a2128/2489
000055795 0247_ $$2URI$$a2489
000055795 0247_ $$2ISSN$$a1433-5530
000055795 020__ $$a3-89336-455-2
000055795 020__ $$a978-3-89336-455-8
000055795 037__ $$aPreJuSER-55795
000055795 041__ $$aEnglish
000055795 082__ $$a333.7
000055795 1001_ $$0P:(DE-Juel1)VDB45705$$aDutta, Suryendu$$b0$$eCorresponding author$$gmale$$uFZJ
000055795 245__ $$aBiomacromolecules of Fossil Algae, Spores and Zooclasts from Selected Time Windows of Proterozoic to Mesozoic Age as Revealed by Pyrolysis-Gas Chromatography-Mass Spectrometry : A Biogeochemical Study
000055795 260__ $$aJülich$$bForschungszentrum Jülich GmbH Zentralbibliothek, Verlag$$c2006
000055795 300__ $$aXVI, 138 S.
000055795 3367_ $$0PUB:(DE-HGF)11$$2PUB:(DE-HGF)$$aDissertation / PhD Thesis
000055795 3367_ $$0PUB:(DE-HGF)3$$2PUB:(DE-HGF)$$aBook
000055795 3367_ $$02$$2EndNote$$aThesis
000055795 3367_ $$2DRIVER$$adoctoralThesis
000055795 3367_ $$2BibTeX$$aPHDTHESIS
000055795 3367_ $$2DataCite$$aOutput Types/Dissertation
000055795 3367_ $$2ORCID$$aDISSERTATION
000055795 4900_ $$0PERI:(DE-600)2414988-3$$826755$$aSchriften des Forschungszentrums Jülich. Reihe Umwelt / Environment$$v67
000055795 502__ $$aRWTH Aachen, Diss., 2006$$bDr. (FH)$$cRWTH Aachen$$d2006
000055795 500__ $$aRecord converted from VDB: 12.11.2012
000055795 520__ $$aThis study has revealed the molecular composition of extraordinarily well preserved palynomorphs (organic-walled microfossils) from selected time windows of Proterozoic to Mesozoic time. Sedimentary rock samples were collected from 11 localities: Hazro area (SE Turkey), Ruhr Basin (Germany), Weilerbach-Quierchied (Germany), Zwickau (Germany), Alstätte Embayment (German-Dutch border), Wülfrath (Germany), Gotland (Sweden), Oklahoma (USA), Virginia (USA), Rampura (India) and Tasmania (Australia). All samples are of low thermal maturity (Rock Eval T$_{max}$ 418°C (R$_{c}$~0.40) - 444°C (R$_{c}$~0.75)), except sediments from Suket Shale (Rampura, India). Palynomorphs which are taxonomically well assigned by project collaborators have been handpicked from the total organic residues. For the present investigations, various types of palynomorphs, for example, $\textit{Tasmanites, Leiosphaeridia}$, chitinozoans, scolecodonts, various megaspores and $\textit{Chuaria circularis}$ have been selected. An approach combining microscopy, Micro-Fourier transform infrared (FTIR) spectroscopy and pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS) has been applied. $\textit{Tasmanites}$ (thick-walled) and $\textit{Leiosphaeridia}$ (thin-walled) are assigned to prasinophycean green algae. Although, $\textit{Tasmanites}$ and $\textit{Leiosphaeridia}$ are morphologically distinct, their overall chemical compositions are similar. The pyrolysates from both thick-walled and thin-walled prasinophytes are dominated by a series of $\textit{n}$-C$_{6-22}$ alkene/alkane doublets which are typical of pyrolysis products of algaenan, the microbiological resistant algal biopolymer. The pyrolysates of the $\textit{Tasmanites}$ from Tasmania (Upper Carboniferous/Lower Permian) show a normal tricyclic terpenoid product distribution, but no traces of tricyclic terpenoids have been detected from the pyrolysates of $\textit{Tasmanites}$ from Turkey (Dadas Formation, Upper Silurian/Lower Devonian) and USA (Arbuckle Mountains, Oklahoma, Upper Devonian/Lower Carboniferous and Chattanooga Shale, Upper Devonian, Virginia). However, the pyrolysates of $\textit{Leiosphaeridia}$ from Turkey show the presence of monounsaturated and diunsaturated tricyclic terpenes as well as monoaromatic tricyclic terpanes. Hence, the inherent source-biomarker relationship between the $\textit{Tasmanites}$ and tricyclic terpenoids does not always exist. Furthermore, tricyclic terpenoid pyrolysates of the $\textit{Leiosphaeridia}$ confirms that there are more than one biological source(s) of these biomarkers and they are not exclusively from or always diagnostic of $\textit{Tasmanites}$. $\textbf{Chitinozoans}$ represent a group of flask-like, marine, organic-walled microfossils with uncertain biological affinity. Biomacromolecules of Chitinozoa (Dadas Formation, Upper Silurian, SE Turkey) of present investigation consist of both aliphatic and aromatic moieties. Aromatic pyrolysis products predominate over aliphatic pyrolysis products. Alkylbenzenes, alkylnaphthalenes, alkylphenols and alkylphenanthrenes are the major aromatic compounds found in the pyrolysates of Chitinozoa. A series of $\textit{n}$-alkene/$\textit{n}$-alkane doublets in the pyrolysates represents the aliphatic moiety. Micro-FTIR data are consistent with the pyrolytic studies emphasizing that biomacromolecules of the Chitinozoa investigated in the present study consist of both aromatic and aliphatic components. No pyrolysis products diagnostic of chitin have been detected in the present study. It is unlikely that the original macromolecules of Chitinozoa before fossilization were made of chitin related compounds. Chitinozoans belong to a group of rare marine fossils that have a substantial amount of ‘lignin-like’ macromolecular matter. Both spectroscopic and pyrolytic investigations demonstrate that the sporopollenin of the fossil $\textbf{megaspores}$ (from Cretaceous and Pennsylvanian sediments, Germany) consists of both aliphatic [...]
000055795 536__ $$0G:(DE-Juel1)FUEK405$$2G:(DE-HGF)$$aGeosysteme - Erde im Wandel$$cP21$$x0
000055795 655_7 $$aHochschulschrift$$xDissertation (FH)
000055795 8564_ $$uhttps://juser.fz-juelich.de/record/55795/files/Umwelt_67.pdf$$yOpenAccess
000055795 909CO $$ooai:juser.fz-juelich.de:55795$$pdnbdelivery$$pdriver$$pVDB$$popen_access$$popenaire
000055795 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess
000055795 9141_ $$y2006
000055795 9131_ $$0G:(DE-Juel1)FUEK405$$bUmwelt$$kP21$$lGeosysteme - Erde im Wandel$$vGeosysteme - Erde im Wandel$$x0
000055795 920__ $$lyes
000055795 9201_ $$0I:(DE-Juel1)VDB51$$d31.12.2006$$gICG$$kICG-V$$lSedimentäre Systeme$$x1
000055795 970__ $$aVDB:(DE-Juel1)86985
000055795 980__ $$aVDB
000055795 980__ $$aJUWEL
000055795 980__ $$aConvertedRecord
000055795 980__ $$aphd
000055795 980__ $$aI:(DE-Juel1)ICG-5-20090406
000055795 980__ $$aUNRESTRICTED
000055795 980__ $$aFullTexts
000055795 9801_ $$aFullTexts
000055795 981__ $$aI:(DE-Juel1)ICG-5-20090406