STRATIGRAPHY OF THE MACKENZIE RIVER DELTA, NORTHWEST TERRITORIES, CANADA
نویسندگان
چکیده
منابع مشابه
‘Drunken forest’ and near-surface ground ice in Mackenzie Delta, Northwest Territories, Canada
In Mackenzie River delta, emergent point bars are colonized by straight white spruce trees in association with alder and willow bushes. On older surfaces, colonized by mosses, the trees are characteristically leaning. In white spruce communities above the level of regular flooding, the trees are stunted and tilted. Tree lean and ground ice content were measured at 18 sites in the delta. There i...
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The extent of near-surface permafrost, or perennially frozen ground within 3m of the surface, was estimated for the Mackenzie River delta by determining its association with riparian vegetation communities in the field, and by subsequently mapping these vegetation communities using SPOT-5 data and the supervised maximum-likelihood classification technique. Near-surface permafrost was absent ben...
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A small collection of artifacts obtained from an aboriginal Mackenzie Inuit grave eroded by the Mackenzie River is described. The site appears to date to within the second half of the 19th century, following European contact but before acculturative processes and population decline, which brought about the extinction of traditional Mackenzie Inuit culture.
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We assayed microsatellite DNA variation among 1013 broad whitefish, Coregonus nasus, from 36 localities within the lower Mackenzie River (Northwest Territories, Canada) to provide the first assessment of fine-scale population structuring of broad whitefish in this large system. Among sampling locations, averaged across all loci, the number of alleles ranged from 3.00 to 6.71 and heterozygosity ...
متن کاملCharacterizing baseline concentrations, proportions, and processes controlling deposition of river-transported bitumen-associated polycyclic aromatic compounds at a floodplain lake (Slave River Delta, Northwest Territories, Canada)
Inadequate knowledge of baseline conditions challenges ability for monitoring programs to detect pollution in rivers, especially where there are natural sources of contaminants. Here, we use paleolimnological data from a flood-prone lake ("SD2", informal name) in the Slave River Delta (SRD, Canada), ∼ 500 km downstream of the Alberta oil sands development and the bitumen-rich McMurray Formation...
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ژورنال
عنوان ژورنال: Geological Society of America Bulletin
سال: 1965
ISSN: 0016-7606
DOI: 10.1130/0016-7606(1965)76[103:sotmrd]2.0.co;2