Conifer and angiosperm biomarkers in clay sediments and fossil plants from the Miocene Clarkia Formation, Idaho, USA

Otto, Angelika; Simoneit, Bernd R.T.; Rember, William C.

doi:10.1016/j.orggeochem.2004.12.004

Cited by 131 publications

(57 citation statements)

References 36 publications

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“…This suggestion can be supported by the fact that the angiosperm terpenoids are mainly observed as apolar compounds in the conifer cone macrofossil. On the other hand, there has been a report of major amounts of bioterpenoids such as -amyrin and friedeline in conifer shoot fossils from the Miocene Clarkia Formation and attributed them to migration from leaves (Otto et al, 2005). However, angiosperm-derived polar terpenoids are less abundant in the polar fraction of the conifer cone macrofossil in our study, so that these terpenoids may be hardly affected by contamination due to migration of organic matter from the adjacent sediments.…”

Section: Resultscontrasting

confidence: 54%

Evaluation of paleoenvironment using terpenoid biomarkers in lignites and plant fossil from the Miocene Tokiguchi Porcelain Clay Formation at the Onada mine, Tajimi, central Japan

Sawada

Nakamura

Arai

et al. 2013

International Journal of Coal Geology

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Section: Resultscontrasting

confidence: 54%

Evaluation of paleoenvironment using terpenoid biomarkers in lignites and plant fossil from the Miocene Tokiguchi Porcelain Clay Formation at the Onada mine, Tajimi, central Japan

Sawada

Nakamura

Arai

et al. 2013

International Journal of Coal Geology

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“…Most of palaeochemotaxonomic investigations are derived from published chemotaxonomic data (Otto and Wilde, 2001) and to some parts from the studies of fossil plants found in sedimentary rocks (Otto and Simoneit, 2001;Otto et al, 2005;Dutta et al, 2011). Unfortunately, our knowledge on botanical palaeochemotaxonomy is still very scarce.…”

Section: Introductionmentioning

confidence: 99%

Determination of the molecular signature of fossil conifers by experimental palaeochemotaxonomy – Part 1: The Araucariaceae family

Hautevelle

Michels

2013

Biogeosciences

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Twelve species of the conifer family Araucariaceae, including Araucaria (6 species), Agathis (3 species) and Wollemia (1 species) genera, were submitted to artificial maturation by confined pyrolysis. The aim of these experiments is to transform the biomolecules synthesized by these species into their homologous geomolecules in laboratory conditions. Determination of the diagenetic molecular signatures of Araucariaceae through experimentation on extant representatives allows us to complete our knowledge in botanical palaeochemotaxonomy. Such knowledge is relevant to palaeoenvironmental, environmental and archaeology purposes. All artificially diagenetic species of Araucariaceae are firstly characterized by a predominance of saturated tetracyclic diterpenoids including ent-beyerane, phyllocladanes and ent-kauranes. Moreover, Araucaria genus shows a high relative abundance of bicyclic sesquiterpenoids, particularly the cadalane-type compounds accompanied by those of eudesmane and bisabolane types as well as chamazulene and pentamethyl-dihydroindenes. Diterpenoids are of labdane, isopimarane and abietane types (essentially derived from abietanoic acids) as well as isohexyl alkylaromatic hydrocarbons. Compared to the tetracyclic diterpenoids, these compounds show a relatively lower abundance, reaching trace levels in the case of saturated abietanes. Distributions of sesquiterpenoids and diterpenoids of Agathis show some similarities to that of Araucaria, with the exception of one species, in which the tetracyclic compounds are absent and the abietane type (essentially derived from abietanoic acids) predominant. High similarities between the Wollemia and Araucaria genera are observed. Both are characterized by some high relative abundance of tetracyclic compounds with no predominance of other specific diterpenoids

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“…Terpenoids are common constituents of the resins of higher plants, and they are important biomarkers for higher plants, especially for conifers. For example, the diterpenoids with skeletal structure of abietanes, pimaranes and kauranes are nonspecific markers of gymnosperm plants (Otto et al, 1997); the sesquiterpenoids with skeletal structure of the cedranes and cuparanes are specific markers of the species of the Cupressaceae (Grantham and Douglas, 1980;Otto and Wilde, 2001); and triterpenoids of oleanane, ursane and lupane classes are biomarkers for angiosperms (Otto et al, 2005). Such matter caused by the time-consuming geochemical evolution, thermal simulation experiments have been carried out in the laboratory to study the early generation of hydrocarbons (Shi et al, 1988(Shi et al, , 2001Huo et al, 2002).…”

Section: Introductionmentioning

confidence: 99%

Long-term, low temperature simulation of early diagenetic alterations of organic matter from conifers: Aliphatic hydrocarbons

2010

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Early diagenetic alterations of organic matter from conifers were simulated at low temperature of 80°C for five and a half years. Their diagenetic products of aliphatic hydrocarbons were identified and quantified. The results reveal that in the early sedimentation of organic matter from conifers, n-alkanes have developed; natural terpenoids have transformed into diagenetic terpenoids, in which some seldom reported evolutionary intermediates-two cadinatetraenes, three norabietatetraenes and one abietatetraene-were detected and identified. The diagenetic pathways for cadalane-type sesquiterpenoids and abietane-type diterpenoids are proposed. The experimental data also show that the diagenesis of aliphatic hydrocarbons is influenced by different inorganic environments. The influences can be concluded as follows: high salinity is propitious to generate and expulse aliphatic hydrocarbons; iron may promote the increase of alkanes, but interrupt the alterations of terpenoids; gypsum, when not coexisting with metal, may slow the degradation from long chain alkanes to short ones; and heavy metal probably delays the early diagenesis of both alkanes and terpenoids. These influences observed under low temperature may enrich studies on early diagenesis of organic matter from higher plants.

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Conifer and angiosperm biomarkers in clay sediments and fossil plants from the Miocene Clarkia Formation, Idaho, USA

Cited by 131 publications

References 36 publications

Evaluation of paleoenvironment using terpenoid biomarkers in lignites and plant fossil from the Miocene Tokiguchi Porcelain Clay Formation at the Onada mine, Tajimi, central Japan

Evaluation of paleoenvironment using terpenoid biomarkers in lignites and plant fossil from the Miocene Tokiguchi Porcelain Clay Formation at the Onada mine, Tajimi, central Japan

Determination of the molecular signature of fossil conifers by experimental palaeochemotaxonomy – Part 1: The Araucariaceae family

Long-term, low temperature simulation of early diagenetic alterations of organic matter from conifers: Aliphatic hydrocarbons

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