Thesis (M.Sc.)--York University, 2004. Graduate Programme in Geography. / Typescript. Includes bibliographical references (leaves 196-210). Also available on the Internet. MODE OF ACCESS via web browser by entering the following URL: http://gateway.proquest.com/openurl?url%5Fver=Z39.88-2004&res%5Fdat=xri:pqdiss &rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:MR11810

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The low ambient air temperatures, together with the low annual rainfall and complete lack of vegetation in the Canadian High Arctic, results in a breakdown of the carbonate rock material by mechanical means. The importance of chemical decomposition, soil formation and transport of ionic material in solution is negligible, when compared with the role played by these same processes in more temperate climates. The purpose of this thesis is to investigate certain aspects of the alkali, alkaline earth and heavy metal geochemistry of selected components of the weathering cycle. The discussion will deal with concentration levels of these parameters in stream waters and, to a lesser extent, soils and stream sediments. Analytical results show that element distributions in the streams resemble those of more temperate carbonate terrains. However, the solute levels are, in general, lower, indicating that a greater proportion of the metals is travelling in colloidal form and/or adsorbed to siltsized material carried by the streams. These findings confirm the belief that chemical weathering and transport in solution are of little importance in the area studied. / Thesis / Master of Science (MSc)

Missing page 48 / <p> The low ambient air temperatures, together with the low annual rainfall and complete lack of vegetation in the Canadian High Arctic, results in a breakdown of the carbonate rock material by mechanical means. The importance of chemical decomposition, soil formation and transport of ionic material in solution is negligible, when compared with the role played by these same processes in more temperate climates. </p> <p> The purpose of this thesis is to investigate certain aspects of the alkali, alkaline earth and heavy metal geochemistry of selected components of the weathering cycle. The discussion will deal with concentration levels of these parameters in stream waters and, to a lesser extent, soils and stream sediments. </p> <p> Analytical results show that element distributions in the streams resemble those of more temperate carbonate terrains. However, the solute levels are, in general, lower, indicating that a greater proportion of the metals is travelling in colloidal form and/or adsorbed to slit-sized material carried by the streams. </p> <p> These findings confirm the belief that chemical weathering and transport in solution are of little importance in the area studied. </p> / Thesis / Bachelor of Science (BSc)

Lower Silurian conodont biostratigraphy is poorly known and not well correlated with the parallel graptolite biozonation. The Cape Phillips Formation contains a continuous record of sedimentation, and exceptionally well preserved faunas in the unstable shelf region of the Franklinian miogeoclinal succession in the Canadian Arctic Islands and north-west Greenland and affords a rare opportunity to integrate the conodont and graptolite biozonation. Detailed biostratigraphic sampling was completed from the base of the Cape Phillips Formation (Upper Ordovician), over the Ordovician-Silurian boundary, and through the entire Lower Silurian (Llandovery and Wenlock) succession on Cornwallis Island in the Canadian Arctic Islands. A total of 180 4.5 kg, samples were collected, yielding 7,575 conodont elements, from which 59 species representing 29 genera were recognised. One new genus and species are established arom the lower Wenlock. Eleven conodont zones were recognized, 1 of which is new, and 3 of which are modified. Due to the multidisciplinary approach of the fieldwork, the conodont zones are integrated with the detailed graptolite biozonation over the entire interval.