127 dossier(s) trouvé(s) portant l’étiquette "paleontology" (les projets pluriannuels sont regroupés):
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The ecology and paleoecology of benthic macroinvertebrates in the Mackenzie Delta region
chercheur principal: Quinlan, Roberto
Année(s) de permis: 2017 2016 2015 2014 2013
Résumé: This study will examine the effects of permafrost and flooding on the ecological structure and carbon exchange of contrasting lakes in the Mackenzie River Delta. Patterned ground marked by ice-wedge polygons is formed by freezing and thawing of the soil, which forms cracks into which ice can spread and cause the soil to uplift. These processes have effects on the hydrology and water chemistry of a...


Hay River vertebrate fossil recovery
chercheur principal: Henderson, Donald M
Année(s) de permis: 2013
Résumé: The objectives of this research project are to: 1) excavation of the body fossil(s) and their careful packaging for removal and travel; and 2) make latex rubber peels of the fossilized trackways left on a fine-grained limestone. If the quality of the tracks merits it, the rock slabs hosting the tracks may be removed for safe-keeping and public display. The fossil will be collected using standar...


Late Cretaceous Palaeontology of northwestern Northwest Territories, Canada
chercheur principal: Vavrek, Matthew J
Année(s) de permis: 2013
Résumé: This project is a continuation of the collaborative research program on ancient biodiversity in the Canadian Arctic. Recently, the group completed work supported by Polar Continental Shelf Project in the Brackett Basin in the westcentral Northwest Territories and the Bonnet Plume Basin in northeastern the Yukon Territory, during which the research team recovered both new vertebrate (dinosaur) foss...


Testing the northern route for Younger Dryas meltwater
chercheur principal: Keigwin, Lloyd D
Année(s) de permis: 2013
Résumé: Here is the project summary from the (U.S.) National Science Foundation proposal that led to this expedition: The research team propose a three-year project to investigate the origin of the Younger Dryas cooling that began about 13,000 years ago. For decades this cold event has been associated with sea ice in the Arctic and North Atlantic Oceans, and the storage and release of fresh water from ...


Progressive behavioural innovation in Ediacaran and Cambrian burrowing animals from the Mackenzie Mountains (NWT, Canada)
chercheur principal: Narbonne, Guy
Année(s) de permis: 2013 2012
Résumé: The world’s earliest animals appeared in the Ediacaran Period about 580 million years ago, and soft worm-like animals capable of movement appeared suddenly worldwide 555 million years ago. The previous studies (Narbonne and Aitken, Palaeontology, 1990; MacNaughton and Narbonne, Palaios, 1999; Narbonne, The Rise of Animals, 2007) have shown that these fossils are especially well represented in the ...


Stratigraphy of the Hyland Group, Selwyn Mountains
chercheur principal: Turner, Elizabeth C
Année(s) de permis: 2013
Résumé: This project seeks to understand the ancient marine environments recorded in these rocks, and thereby to interpret this poorly known, dramatic time in North America’s tectonic evolution. The areas addressed will be those that were briefly described in 1993: 1 location is in Yukon Territory (YT) and 2 are in Northwest Territories (NWT). This work will complement licensed research currently under wa...


Reconstructing Pliocene Environmental Change and Landscape Dynamics using the Beaufort Formation on Northwest Banks Island, NT
chercheur principal: Gosse, John C
Année(s) de permis: 2013
Résumé: The primary objectives are to i) collect fossils (i.e. peat, bone, wood, and other sedimentary proxies) for paleoenvironmental reconstructions and, ii) document the age of the Beaufort Formation (Fm) at Ballast Brook, northwest Banks Island using a new approach based on the exposure of quartz sand grains to cosmic radiation: terrestrial cosmogenic nuclide (TCN) burial dating. The cosmogenic nuclid...


The Search for Early Fossil Sharks in Lower Devonian rocks of the Mackenzie Mountains, NWT
chercheur principal: Wilson, Mark V.H.
Année(s) de permis: 2013 1998 1996 1990
Résumé: The 2 objectives of this research project are: 1) to recover some of the oldest-known body fossils of sharks and their relatives as well as other associated fossils. The anatomy of the fossil species will be described in detail and published in international journals. These fossils will allow identification of fragments of related species found at other sites worldwide, and will allow the researc...


Cambrian stratigraphy
chercheur principal: Pratt, Brian R.
Année(s) de permis: 2012 2002 2000 1998
Résumé: The principal investigator has been working off and on for many years on the stratigraphy and paleontology of Cambrian strata of the Mackenzie Mountains. This is a critical region of North America because the record of sedimentation on the flank of the continent as it was over half a billion years ago is particularly extensive with little interruption. At the section of interest the lower part of ...


Palaeontology of the Summit Creek Formation, western Northwest Territories, Canada
chercheur principal: Vavrek, Matthew J
Année(s) de permis: 2012
Résumé: The research team will be prospecting for and collecting Cretaceous fossils from the Summit Creek Formation in order to better understand what terrestrial biodiversity was like at high latitudes at that time. This project is a continuation of the collaborative research program on ancient biodiversity in the Canadian Arctic. Recently, the research team completed work supported by Polar Continental ...


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