18 dossier(s) trouvé(s) portant l’étiquette "sediment" (les projets pluriannuels sont regroupés):
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Investigation of a possible impact structure on Victoria Island, NWT
chercheur principal: Osinski, Gordon
Année(s) de permis: 2015 2012
Résumé: The objectives of this research are to: (1) Confirm of a meteorite impact origin for the Collinson Inlet structure. In order to confirm the meteorite impact origin of this structure, unequivocal shock metamorphic criteria need to be documented. Shatter cones are the only diagnostic shock effect visible to the naked eye (French and Koeberl 2010). The research team will seek out the potential s...


The Study of Environmental Change, Truelove Lowland, Devon Island, N.W.T.
chercheur principal: King, Roger H.
Année(s) de permis: 1994 1992 1991 1990 1988
Résumé: This is a continuation of a long-term study of the record of past environmental changes preserved in the sediments of the Truelove Lowland. Sediment traps that were placed in Immerk & Loon Lake will be removed & analyzed. Also the temperature & moisture conditions of soil surrounding Fish Lake will be monitored and samples will be collected....


Investigation of ground ice development in sediments of the Mackenzie Delta area
chercheur principal: Burn, Chris R
Année(s) de permis: 1997 1996 1995 1994 1993 1992 1991
Résumé: The researcher will continue to collect samples of ground ice and measure temperatures in lakes and ponds. This information is used to help understand how the ground heaves as it freezes in winter, and to determine the extent of soil settlement during thaw in summer. The information about lakes is used to help understand the relations between water depths and temperatures beneath the lake....


Quaternary Geology of the Winter Lake Map Area
chercheur principal: Kerr, Daniel E.
Année(s) de permis: 1993
Résumé: The researcher will be conducting geological field work in the region defined by the NTS Winter Lake Map (No. 86A). The work will involve surveying the land features and collecting samples of the rock and sediments in order that this information can be summarized on a geological map....


Marine geological and geophysical studies in Hudson Strait and Ungava Bay during 1993
chercheur principal: MacLean, Brian
Année(s) de permis: 1993 1990
Résumé: This survey will take place from a ship travelling through the Hudson Strait and Ungava Bay region. The researchers will collect information on the history and characteristics of the seabed. Some samples of sediments on the seafloor will be taken for further analyses. Transfer of a few of the ship's crew may take place at Cape Dorset but all other activities will take place in locations remote ...


Freezing history and depositional setting of massive ground ice in the Canadian High Arctic
chercheur principal: Bell, Trevor
Année(s) de permis: 1993 1990 1988
Résumé: This study will provide a better understanding of permafrost conditions in the high arctic as well as the environmental conditions that lead to permafrost formation. Study sites include the Fosheim Peninsula on Ellesmere Island and May Point and Mokka Fiord on eastern Axel Heiberg Island....


Late Quaternary history and paleoenvironmental change in the Lake Hazen Basin on Ellesmere Island
chercheur principal: Smith, Rod
Année(s) de permis: 1993 1992
Résumé: It is believed that during the last ice-age on northern Ellesmere Island, Lake Hazen was `pushed' further south as a result of the presence of glaciers. The researchers are investigating the Lake Hazen Basin area to determine the nature of this ancient lake. Sediment samples will be taken from both Lake Hazen as well as the surrounding area to study the past environment and organisms (now fossils...


Cambrian sedimentology and paleontology
chercheur principal: Pratt, Brian R.
Année(s) de permis: 1995 1993
Résumé: The Cambrian period is an interval of geologic time that is poorly known in arctic Canada. Previous studies have been very basic and almost no fossils have been recovered. Sections of sedimentary rock will be measured in detail, with attention focused on the structure of the sediments as well as the presence of fossils. A map will then be constructed showing the layers in which fossils occur. ...


Preglacial channel and sediment-fill of the ancestral Mackenzie River Valley between Wrigley and Fort Good Hope, NWT
chercheur principal: Smith, Derald
Année(s) de permis: 1993
Résumé: The Mackenzie River Valley, from Wrigley to Fort Good Hope, will be surveyed in order to document the nature of the river prior to the last glaciation. Sediments will be sampled in order to determine their age (using radiocarbon dating techniques). Field work will take place along the Mackenzie River between Wrigley and the mouth of the Redstone River, in the lower section of Gt. Bear River, and...


Eastern arctic climate of the past 2000 years: the Varved Lake sediment record
chercheur principal: Overpeck, Jonathan
Année(s) de permis: 1993 1991 1989
Résumé: The goal of our ongoing project is to collect samples of mud from the bottom of several undisturbed lakes on southern Baffin Island. In the laboratory, we will then examine the chemistry, texture and fossils found in this mud in an effort to document how the environment (mainly climate) of this region has changed over the past 2000 years. We hope that this work will eventually aid efforts to imp...


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