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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
31

4D interpretation of texture and architecture of a coarse grained slope channel system using automated statistics from high resolution outcrop photography

Tuitt, Natasha R. T. January 2014 (has links)
The building blocks of a sedimentary system are essential inputs into studies of reservoir character and comparisons with other sedimentary systems. Yet, our current knowledge of the building blocks of deep water slope channel deposits is still largely speculative. A quantitative approach has been utilised in order to analyse a host of lithological data and objectively identify these sedimentary components. The laterally-extensive and gently-dipping continental slope deposits of the San Fernando Channel System, Baja California, provide the required control on sub-seismic-scale temporal and lateral variations of lithofacies and 3D architecture. High resolution photo-panoramas (with better than 2mm accuracy) of the prominent conglomeratic component of the succession were collected from various key parts of the outcrop. Image analysis of segments extracted from the photo-panoramas generates key parameters for comparison of texture and fabric of conglomerates, such as clast to matrix ratio, major axis length and relative orientation. Statistical analysis of these data enabled the erection of an objective lithofacies scheme for the gravel fraction, the grouping of lithofacies into objectively-defined assemblages, and the establishment of models for the lateral and stratigraphic distributions of these assemblages. 12 lithofacies were objectively identified through hierarchical cluster analysis of 4 quantitative lithological parameters. Statistical analyses indicate significant differences in diversity in the lithofacies assemblages between the early and later parts (termed Stage 1 and Stage 2) of a channel complex set (sensu Sprague, et al., 2002), and to a lesser extent between marginal and axial parts of the system. These can be related to spatial differences and temporal changes in the nature of the turbidity currents flowing through the channel system. Gravelly units become more organised and less diverse with time in one CCS, and each successive CCS more organised at earlier stratigraphic levels than the next, except for the last CCS which is interpreted as influenced by a tectonic paroxysm. These seemingly autocyclic changes in organisation are interpreted as process-responses to changes in equilibrium profile as the nature of confinement changes with the infilling of an initial erosional confinement, to confinement by a master levee and gradual infilling through the evolution of each CCS.
32

The neoproterozoic Yanbian group and associated plutons in the westernYangtze block, SW China

Sun, Weihua, 孙卫华 January 2009 (has links)
published_or_final_version / Earth Sciences / Doctoral / Doctor of Philosophy
33

Intrusive relations of the Batholith of Southern California near Bonsall, California

Walker, Giles Eldred, 1930-, Walker, Giles Eldred, 1930- January 1958 (has links)
No description available.
34

Emplacement history of the Pearly Gates anorthosite pluton and spatially related Tessiarsuyungoakh intrusion, and metamorphic petrology of the adjacent Tasiuyak paragneiss, northern Labrador /

Tettelaar, Tanya Anne, January 2004 (has links)
Thesis (M.Sc.)--Memorial University of Newfoundland, 2005. / Includes bibliographical references. Also available online.
35

Plagioclase zoning profiles of a small pluton in Arizona

Williams, Paul January 1981 (has links)
No description available.
36

Plutonism and tectonic evolution of the Ras Gharib segment of the northern nubian shield, Egypt

Abdel-Rahman, Abdel-Fattah Mostafa January 1986 (has links)
No description available.
37

The intrusive rocks of the Hepburn metamorphic-plutonic zone of the central Wopmay Orogen, N.W.T. /

Lalonde, André E. January 1986 (has links)
No description available.
38

Origin of the permian panzhihua layered gabbroic intrusion and the hosted Fe-Ti-V oxide deposit, Sichuan Province, SW China

Pang, Kwan-Nang. January 2008 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2008. / Also available in print.
39

A petrochemical study of the Mount Fubilan Intrusion and associated ore bodies, Papua New Guinea

Doucette, John. January 1900 (has links) (PDF)
Thesis (Ph.D.)--Oregon State University, 2000. / Includes bibliographical references (leaves 359-373).
40

Reactions between country rock xenoliths and the magma of Uitkomst Complex, with implications for the origin of the sulphide mineralisation

Hulley, Vierah. January 2005 (has links)
Thesis (M. Sc.(Geology))-University of Pretoria, 2005. / Includes bibliographical references. Mode of access: World Wide Web.

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