Thesis (Ph. D.)--Oregon State University, 2007. / Printout. Includes bibliographical references (leaves 164-176). Also available on the World Wide Web.

Thesis (Ph. D.)--University of Queensland, 2006. / Includes bibliographical references.

Thesis (M.S.)--Virginia Polytechnic Institute and State University, 2000. / Includes bibliographical references (leaves 20-23).

Thesis (M.S.)--University of New Orleans, 2005. / Title from electronic submission form. "A thesis ... in partial fulfillment of the requirements for the degree of Master od Science in the Departmet of Geology and Geophysics"--Thesis t.p. Vita. Includes bibliographical references.

Thesis (PhD)--Göteborg University, c2007. / A collection of papers by the author, some with co-authors. Includes bibliographical references.

Thesis (M.S.)--Ohio University, November, 2008. / Title from PDF t.p. Includes bibliographical references.

Viable cysts collected from natural sediments were induced to excyst. Ten cyst-theca relationships, first established elsewhere, were confirmed for British Columbia (B.C.). These were: Gonyaulax tamarensis, Protoperidinium aspidotum, P. claudicans, P. conicoides, P. conicum, P. cf. denticulatum, P. leonis, P. oblongum, and P. punctulatum. Five cyst-theca relationships were established for the first time: Peridiniopsis cf. hainanensis, Protoperidinium sp. nov., P. thorianum, and two apparently new species of Gonyaulax. P. pentagonum was found to have a cyst different from the cyst of this species in the Atlantic. Forty-five samples from Recent sediments were collected along the coast of B.C. Twenty-three of the samples had very few cysts. Hidden Basin was the chief source of viable cysts for the excystment experiments. Ten cyst-based taxa were described from the sediment samples. These were: Operculodinium centrocarpum, the cyst of Scrippsiella faeroense (= Micrhystridium bifurcatum), Spiniferites belerius, S. bentori, S. bulloideus, S. elongatus, S. membranaceus, S. nodosum, and S. ramosus. Tanyosphaeridium sp. has been recorded previously as the cyst of Polykrikos schwarzi. Two new cyst-based taxa are described for the first time. These are a cyst of Protoperidinium sp., and Spiniferites "sp. A". Cyst assemblages in the Recent sediments of B.C. were similar to many temperate estuarine and neritic areas. Some cysts which are characteristic of these areas in other regions, have not yet been found in B.C. The relative importance of some cysts also varies from that found in similar sediments elsewhere. The dominance of Operculodinium centrocarpum in many of the cyst assemblages, including B.C., is a pattern typical of temperate estuarine conditions. Some cysts appear to be characteristically associated with fjord environments. Scrippsiella faeroense, for example, has been found in Norwegian fjords and Scottish sea lochs as well as some B.C. fjords and inlets. / Science, Faculty of / Botany, Department of / Zoology, Department of / Graduate

Harmful organic contaminants, such as petroleum hydrocarbons, are ubiquitous in coastal marine ecosystems around the world, a problem that will only be exacerbated with rising sea level and increased inundation of coastal urban areas. Therefore, it is necessary to understand the fate of these contaminants following their deposition on marine sediment, where they can potentially persist for long periods of time. As organic carbon remineralization rates depend on the respiration process employed by the bacteria in the sediment, it was the goal of this study to determine how the sediment redox environment, with an emphasis on Fe redox chemistry, affects the biodegradation of recalcitrant petroleum hydrocarbon compounds. While amendment of natural sediment with Fe minerals that are commonly transported to coastal areas following erosion from continental crust did successfully catalyze Fe reduction and inhibit sulfate reduction, the effect on the hydrocarbon biodegradation rate was negligible. However, inoculation of the sediment with Shewanella oneidensis, an exoelectrogenic, Fe reducing bacteria known to catalyze the degradation of hydrocarbon compounds found in crude oil, did significantly affect the redox environment and sediment microbial communities and alter the pattern of hydrocarbon loss in the sediment over time. / Includes bibliography. / Thesis (M.S.)--Florida Atlantic University, 2021. / FAU Electronic Theses and Dissertations Collection

One hundred and seventy four shale and argillaceous carbonate samples have been analyzed spectrographically for boron. The samples represent argillaceous sediments varying in age from the Proterozoic to the Cretaceous. A negative correlation between per cent CO2 and boron suggests that boron is mainly distributed in the argillaceous fraction and in the silica fraction. The B 2497.73A° line, because of an Fe coincidence at 2497.82A°, was found to be unsuitable for boron determinations in either the first or second orders of a Jarrel-Ash Wadsworth-mount spectrograph (Dispersion 5.2 and 2.6 A/Mm. respectively). Consequently, an analytical method utilizing B 2496.78a° in the second order spectrum was used. The boron results of this method compared to a chemical method appear to be systematically lower at concentrations above 24 ppm. boron. For example, two samples analyzed chemically contained 24 and 117 ppm. boron whereas the same samples analyzed spectrographically contained 24 and 79 ppm. boron. Absolute boron values probably could be recalculated by adjusting the working curve. Shales containing an apparent boron content above 75 ppm. appear to indicate a marine or hypersaline depositional environment. One section, Whitehorse F. (Triassic) has been misclassified into brackish or fresh water depositional environment based on low (below 75 ppm.) boron content. However, the mineralogy of this section is atypical (very high carbonate content) and the results may be misleading. Samples from the Fernie, Banff, Mount Hawk, Thorold and Grimsby, and the sub-Devonian all contain more thin 75 ppm. thus indicating marine depositional environments. A brackish water environment is suggested for shales from the Littleton and Kaakapau (Blackstone) Formations. One shale section, the Proterozoic (Miette Group), may have been deposited under a fresh water environment. / Thesis / Master of Science (MSc)

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