Hydrocarbon biomarkers, thermal maturity, and depositional setting of tasmanite oil shales from Tasmania, Australia

Revill, Andrew T.; Volkman, John K.; O'Leary, Teresa; Summons, Roger E.; Boreham, Christopher J.; Banks, Maxwell R.; Denwer, K.

doi:10.1016/0016-7037(94)90365-4

Cited by 116 publications

(44 citation statements)

References 41 publications

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“…Different currents influencing the algal components by transport, either in the water column or by local sea-floor currents, can thus have been present in Knorringfjellet. Tasmanites is commonly most abundant in near shore/low oxygen environments (Revill et al, 1994). The significantly higher contents of this algal group in the Janusfjellet section than in the Knorringfjellet section can also be ascribed to a possible more proximal location of Janusfjellet.…”

Section: Palynofacies and Depositional Environmentmentioning

confidence: 91%

Dinoflagellate cyst biostratigraphy, palynofacies, depositional environment and sequence stratigraphy of the Agardhfjellet Formation (Upper Jurassic–Lower Cretaceous) in central Spitsbergen (Arctic Norway)

Dalseg¹,

Nakrem²,

Smelror³

2016

NJG

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The Upper Jurassic-Lower Cretaceous in the Isfjorden area (central Spitsbergen), consisting mostly of dark shales, with local carbonate-seep deposits, have been analysed for marine palynomorphs and palynofacies. Two dinoflagellate cyst assemblage zones have been defined in the Slottsmøya Member (Agardhfjellet Formation). The palynostratigraphic zones are established with reference to δ 13 C org curves, and are correlated with Early Volgian to Late Ryazanian foraminiferal zones and ammonite zones from the same area. A Leiosphaeridia bloom at 45.62 m in the Janusfjellet profile is correlated with a comparable bloom recovered from several locations on the western Barents shelf. Palynofacies analysis is used to interpret relative sea-level changes and is also used to constrain the sequence stratigraphy of the studied sections at Janusfjellet and Knorringfjellet.

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Section: Palynofacies and Depositional Environmentmentioning

confidence: 91%

Dinoflagellate cyst biostratigraphy, palynofacies, depositional environment and sequence stratigraphy of the Agardhfjellet Formation (Upper Jurassic–Lower Cretaceous) in central Spitsbergen (Arctic Norway)

Dalseg¹,

Nakrem²,

Smelror³

2016

NJG

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“…Thus, the Tasmanites punctatus may have occupied an ecological niche similar to that occupied by modem seaice diatom communities (Revill et al 1994). Dinosteranes are generally below detection in the Paleozoic marine sediments and oils that have been examined and reported to date.…”

Section: The Geological Succession Of Primary Producers In the Oceansmentioning

confidence: 99%

Molecular biogeochemistry of modern and ancient marine microbes

Waldbauer¹

2010

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Biological activity has shaped the surface of the earth in numerous ways, but life's most pervasive and persistent global impact has been the secular oxidation of the surface environment. Through primary production -the biochemical reduction of carbon dioxide to synthesize biomass -large amounts of oxidants such as molecular oxygen, sulfate and ferric iron have accumulated in the ocean, atmosphere and crust, fundamentally altering the chemical environment of the earth's surface. This thesis addresses aspects of the role of marine microorganisms in driving this process. In the first section of the thesis, biomarkers (hydrocarbon molecular fossils) are used to investigate the early history of microbial diversity and biogeochemistry. Molecular fossils from the Transvaal Supergroup, South Africa, document the presence in the oceans of a diverse microbiota, including eukaryotes, as well as oxygenic photosynthesis and aerobic biochemistry, by ca. 2.7Ga. Experimental study of the oxygen requirements of steroid biosynthesis suggests that sterane biomarkers in late Archean rocks are consistent with the persistence of microaerobic surface ocean environments long before the initial oxygenation of the atmosphere. In the second part, using Prochlorococcus (a marine cyanobacterium that is the most abundant primary producer on earth today) as a model system, we explored how microbes use the limited nutrient resources available in the marine environment to make the protein catalysts that enable primary production. Quantification of the Prochlorococcus proteome over the diel cell-division cycle reveals that protein abundances are distinct from transcript-level dynamics, and that small temporal shifts in enzyme levels can redirect metabolic fluxes. This thesis illustrates how molecular techniques can contribute to a systems-level understanding of biogeochemical processes, which will aid in reconstructing the past of, and predicting future change in, earth surface environments. ACKNOWLEDGMENTSI have incurred many debts of gratitude and appreciation over the course of this work. None are greater than those to my advisors, Penny Chisholm and Roger Summons, who allowed and enabled me to pursue such a wide range of scientific interests and offered their help and advice every step of the way. I have been very lucky to have had the chance to learn so much during my Ph.D., and none of that would have been possible without their guidance and support.I have also had the great fortune to know and work with all the members of the Chisholm and Summons labs, who have made this an enjoyable and rewarding place to be. I am especially grateful to Laura Sherman for her skill and dedication in analyzing biomarkers in the late Archean cores -it was truly getting blood from a stone. I was lucky to collaborate with Sébastien Rodrigue, whose expertise and collegiality made the diel experiment even more fruitful than I could have hoped. IntroductionThe coevolution of life and earth surface environments is central to the history and functionin...

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“…The sedimentology of the thick mudrock section that overlies the basal "tillites" has also been the subject of some interest, particularly the Tasmanites Oil Shale facies that is widely regarded as a potential oil source rock (Domack et al, 1993;Revill et al, 1994;Domack, 1995). Domack et al (1993) demonstrated that the Tasmanites Oil Shale is a recurring facies, rather than a single bed as was previously thought, and advocated an offshore marine, oxygenated environment of deposition.…”

Section: Previous Sedimentological Researchmentioning

confidence: 99%

“…Corner, 2006), and both the lack of marine body and trace fossils and the abundance of preserved organic matter in the overlying mudrocks are consistent with data from other such transitions in this time interval (e.g., Buatois et al, 2006), where it has been attributed to release of large volumes of fresh water into partially enclosed basins. Among the distinctive facies of this interval is the "Tasmanites Oil Shale" (Domack et al, 1993;Revill et al, 1994), thin intervals of algal lamosites that yield liquid hydrocarbons on thermal maturation.…”

Section: Stratigraphic Distribution Of Glacial/cold Climate Indicatorsmentioning

confidence: 99%

Stratigraphic signature of the late Palaeozoic Ice Age in the Parmeener Supergroup of Tasmania, SE Australia, and inter-regional comparisons

Fielding

Frank

Isbell

et al. 2010

Palaeogeography, Palaeoclimatology, Palaeoecology

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Hydrocarbon biomarkers, thermal maturity, and depositional setting of tasmanite oil shales from Tasmania, Australia

Cited by 116 publications

References 41 publications

Dinoflagellate cyst biostratigraphy, palynofacies, depositional environment and sequence stratigraphy of the Agardhfjellet Formation (Upper Jurassic–Lower Cretaceous) in central Spitsbergen (Arctic Norway)

Dinoflagellate cyst biostratigraphy, palynofacies, depositional environment and sequence stratigraphy of the Agardhfjellet Formation (Upper Jurassic–Lower Cretaceous) in central Spitsbergen (Arctic Norway)

Molecular biogeochemistry of modern and ancient marine microbes

Stratigraphic signature of the late Palaeozoic Ice Age in the Parmeener Supergroup of Tasmania, SE Australia, and inter-regional comparisons

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