Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1991. / Vita. Abstract. Includes bibliographical references (leaves 42-45). Also available via the Internet.

Thesis (M.S.)--Naval Postgraduate School, 1980. / Includes bibliographical references (leaves 70-72).

In the first part of this thesis definitions of sea level are given and causes and effects of its seasonal and secular variations are briefly discussed. The second part deals with the numerical determination of these changes on the coast of British Columbia. Using raw tidal data in the form of monthly means of sea level, seasonal variations are determined as annual oscillations with mean amplitudes between 5 and 12 cm for seven stations on the B.C. coast. The investigation of secular variations is based on (raw) annual means of sea level. These variations are essentially represented by linear trends which are statistically significant at the stations VICTORIA, VANCOUVER, POINT ATKINSON and PRINCE RUPERT, where they indicate submergence. Assuming an eustatic rise of sea level at the rate of 1.0 mm/yr, the influence of land movement on submergence is estimated. For VICTORIA, a probable land uplift since 1909 and for VANCOUVER, POINT ATKINSON and PRINCE RUPERT a definite land subsidence since about 1943 is found. The rates of land subsidence range between 1 and 2 mm/yr. / Applied Science, Faculty of / Civil Engineering, Department of / Graduate

This study describes the conodont palaeontology of Upper Ordovician sections in Avalonia and Baltica. 24 species from 17 genera are systematically described and are attributed to the North Atlantic Realm. Sections can be correlated using graptolites and conodonts. The taxa are typical of the accepted Aphelognathus to Periodon shallow to deep-water biofacies. From the late Caradoc in Avalonia and Baltica, the Amorphognathus and deeper-water biofacies persisted in shelf settings. The stability of this distribution through the Ashgill, a period when Avalonia and Baltica drifted towards sub-tropical latitudes, suggests ocean cooling associated with glaciation was the dominant control on biofacies.Microfacies analysis of the phosphatic Amorphognathus superbus Biozone limestones from the Nod Glas Formation of the Welsh Borders indicates the presence of the oxygen minimum zone. Biofacies distribution in this section reflects the subtle variations in temperature within this unique habitat. A hypothesis is presented for the evolution of Amorphognathus ordovicicus in which range expansion into slope settings enabled parapatric speciation. Amorphognathus ordovicicus evolved gradually from a deeper water ancestor by the loss of the lateral process and cusp adjacent denticles on the M element. The initial and subsequent transgressions of the Ashgill brought Amorphognathus ordovicicus, and its cool water niche, into shelf areas. Gradual evolution in deep-water is predicted by the Plus ça Change model. The crown enamel of Periodon, Protopanderodus and Drepanodus records seasonally entrained growth with periods of refractional growth followed by longer functional episodes. Periodon exhibits reduced growth and comparatively short growth duration. Drepanodus and Protopanderodus show continued growth. It is hypothesised that Periodon was nektobenthic and adapted to harsh but stable conditions in the deep-sea, an r-strategist. Drepanodus and Protopanderodus were nektonic and grew to a large size indicating that they were AT-strategists. Upper Ordovician North Atlantic Realm nektobenthic conodonts were characterised by a high diversity and abundance of small sized individuals compared with coeval shelf faunas, a situation analogous to the modem oceans.

Thesis (Ph. D.) in Geological Sciences--University of Maine, 2002. / Includes vita. Includes bibliographical references (leaves 141-149).

No description available.

Thesis (Ph. D.)--University of Missouri-Columbia, 2006. / The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on April 29, 2009) Vita. Includes bibliographical references.

Thesis (Ph. D.)--Johns Hopkins University, 1966. / Bibliography: leaves 66-70.

Thesis (Ph. D.)--Ohio State University, 2005. / Title from first page of PDF file. Includes bibliographical references (p. 228-244).

Relative sea level (RSL) reconstructions from paleo records are often the most valuable data set in testing and constraining glacial isostatic adjustment (GIA) models. In some regions, the amplitude and rate of the reconstructed RSL changes are large making the data difficult to fit. Arguably, the reconstructed RSL curve from Maine, USA, is the classic example of such a data set with peak values at about 120 m dropping to a low stand of around -40 m within a few kyr. To our knowledge, no GIA model has captured these extreme variations and the record has been somewhat neglected by the GIA community. Here we critically assess and present a revised pre-10 ka RSL data base for this region and combine it with two recent Holocene compilations. To determine if a successful model fit can be found, output based on a parameter set of five ice models and 440, spherically-symmetric, Maxwell Earth viscosity models was compared to the compiled data. Results show that none of the ice models produce a good fit for the large suite of 1D viscosity models considered. Specifically, the modelled timing and rate of RSL fall are generally too early and low, and the RSL low stand from the models is significantly higher than that observed. A model sensitivity analysis suggests that Earth models that can simulate time-dependent viscosity (e.g., those including transient and/or non-linear effects) are required to fit the Maine RSL data set.