Late Eskimo Archaeology in the Western Mackenzie Delta Area

1952 ◽  
Vol 18 (1) ◽  
pp. 30-39
Author(s):  
Douglas Osborne
Keyword(s):  
New Mexico ◽  
The Arctic ◽  
Mackenzie Delta ◽  
American Philosophical Society ◽  
Delta Area ◽  
University Of New Mexico ◽  
Arctic Coast ◽  
Mackenzie River

Although the American Philosophical Society–University of New Mexico Mackenzie Valley Expedition of 1938 (Bliss, 1939, p. 365) was not primarily concerned with Eskimo archaeology, the members felt, while at the trading rendezvous Aklavik on the lower Mackenzie River, that the opportunity to run down to the Arctic coast was too obvious to be neglected. The archaeology of the Western Eskimo of the Mackenzie area has never been well studied; little, as a matter of fact, has been added since 1930 when Mathiassen wrote the introduction to his Western Eskimo report. This paper will add somewhat to a meager store of fact.

A new find of Early Cretaceous radiolarians on the Arctic coast of East Siberia (Lena River delta area)

2014 ◽  
Vol 458 (1) ◽  
pp. 1047-1051 ◽  
Author(s):  
V. S. Vishnevskaya ◽  
E. O. Amon ◽  
V. A. Marinov ◽  
B. N. Shurygin
Keyword(s):  
Early Cretaceous ◽  
River Delta ◽  
The Arctic ◽  
East Siberia ◽  
Delta Area ◽  
Lena River ◽  
Arctic Coast ◽  
Lena River Delta

scholarly journals Water Expulsion and Pingo Formation in a Region Affected by Subsidence

1967 ◽  
Vol 6 (46) ◽  
pp. 568-572 ◽  
Author(s):  
R. C. Bostrom
Keyword(s):  
Northwest Territories ◽  
River Delta ◽  
Tectonic Subsidence ◽  
The Arctic ◽  
Delta Area ◽  
Pass Through ◽  
Recent Sediments ◽  
Mackenzie River

Abstract Geophysical evidence indicates that the delta area of the Mackenzie River, Northwest Territories, is affected by tectonic subsidence. Pingos are of sparse occurrence in the Arctic as a whole but they occur in hundreds in the Mackenzie River delta. In a region of subsidence, as recent sediments pass through the base of permafrost, compaction becomes possible. The resulting water expulsion produces an artesian head responsible for building pingos.

Pleistocene geology and geomorphology of the Smoking Hills Upland and lower Horton River Arctic coast of mainland Canada

1989 ◽  
Vol 26 (9) ◽  
pp. 1677-1687 ◽  
Author(s):  
William H. Mathews ◽  
J. Ross Mackay ◽  
Glenn E. Rouse
Keyword(s):  
Sediment Transport ◽  
Early Pleistocene ◽  
The Arctic ◽  
Mackenzie Delta ◽  
Indirect Influence ◽  
Drainage Patterns ◽  
Arctic Coast ◽  
Peripheral Areas ◽  
Late Wisconsinan ◽  
Intermediate Surface

The Smoking Hills Upland and lower Horton River valley, on the Arctic coast of Canada 300 km east of the Mackenzie Delta, retain an extended record of subaerial erosion of nearly flat-lying Cretaceous shales. This erosion led to the development of (i) a very gently sloping low-relief upland surface (Early Pleistocene(?)), (ii) a slightly steeper intermediate surface, and (iii) younger steep valley walls, terraces, and broad valley bottoms. No direct glacial contribution to any of these landforms can be recognized. An early interglacial(?) fluvial episode is recorded in plateau-cap sediments. Suggestions of an early (mid-Pleistocene or earlier) glaciation overwhelming the Smoking Hills Upland are found in (i) anomalies in drainage patterns, (ii) disturbances in bedding, believed to have been caused by ice thrusting, and (iii) local occurrences of diamictons. Later, probably Early Wisconsinan, glaciation left meltwater channels in peripheral areas. The Late Wisconsinan ice sheet did not reach the Smoking Hills Upland but may have had an indirect influence by modyfying discharge and sediment transport of Horton River.

Interpretation of the Gravity Anomaly at Darnley Bay, N.W.T.

1971 ◽  
Vol 8 (8) ◽  
pp. 1037-1042 ◽  
Author(s):  
R. A. Stacey
Keyword(s):  
Gravity Anomaly ◽  
Background Field ◽  
The Body ◽  
Shallow Depth ◽  
The Arctic ◽  
Mackenzie Delta ◽  
Early Paleozoic ◽  
Truncated Cone ◽  
Arctic Coast

The almost circular gravity anomaly which lies at the head of Darnley Bay on the Arctic coast 400 km east of the Mackenzie Delta, has a radius of 50 km with Bouguer values rising 130 mgal above the background field. It is concluded that the anomaly is due to a basic or ultrabasic body in the form of a truncated cone (which may narrow towards the surface or downwards), lying at a comparatively shallow depth within the Proterozoic sediments. Having obtained a feasible configuration for the body, the influence it may have had on the deposition of later Proterozoic and early Paleozoic sediments is discussed in speculative terms.

scholarly journals UV/PAR radiation and DOM properties in surface coastal waters of the Canadian shelf of the Beaufort Sea during summer 2009

2013 ◽  
Vol 10 (4) ◽  
pp. 2761-2774 ◽  
Author(s):  
J. Para ◽  
B. Charrière ◽  
A. Matsuoka ◽  
W. L. Miller ◽  
J. F. Rontani ◽  
...  
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Beaufort Sea ◽  
The Arctic ◽  
Mackenzie Delta ◽  
Fluorescence Excitation ◽  
Low Salinity ◽  
Fluorescent Dissolved Organic Matter ◽  
Main Driver ◽  
Mackenzie River

Abstract. Surface waters from the Beaufort Sea in the Arctic Ocean were evaluated for dissolved organic carbon (DOC), and optical characteristics including UV (ultraviolet) radiation and PAR (photosynthetically active radiation) diffuse attenuation (Kd), and chromophoric and fluorescent dissolved organic matter (CDOM and FDOM) as part of the MALINA field campaign (30 July to 27 August). Spectral absorption coefficients (aCDOM (350 nm) (m−1)) were significantly correlated to both diffuse attenuation coefficients (Kd) in the UV-A and UV-B and to DOC concentrations. This indicates CDOM as the dominant attenuator of both UV and PAR solar radiation and suggests its use as an optical proxy for DOC concentrations in this region. While the Mackenzie input is the main driver of CDOM dynamics in low salinity waters, locally, primary production can create significant increases in CDOM. Extrapolating CDOM to DOC relationships, we estimate that ∼16% of the DOC in the Mackenzie River does not absorb radiation at 350 nm. The discharges of DOC and its chromophoric subset (CDOM) by the Mackenzie River during the MALINA cruise are estimated as ∼0.22 TgC and 0.18 TgC, respectively. Three dissolved fluorescent components (C1–C3) were identified by fluorescence excitation/emission matrix spectroscopy (EEMS) and parallel factor (PARAFAC) analysis. Our results showed an aquatic dissolved organic matter (DOM) component (C1), probably produced in the numerous lakes of the watershed, that co-dominated with a terrestrial humic-like component (C2) in the Mackenzie Delta Sector. This aquatic DOM could partially explain the high CDOM spectral slopes observed in the Beaufort Sea.

scholarly journals UV/PAR radiations and DOM properties in surface coastal waters of the Canadian shelf of the Beaufort Sea during summer 2009

2012 ◽  
Vol 9 (11) ◽  
pp. 15567-15602 ◽  
Author(s):  
J. Para ◽  
B. Charrière ◽  
A. Matsuoka ◽  
W. L. Miller ◽  
J. F. Rontani ◽  
...  
Keyword(s):  
Solar Radiation ◽  
Beaufort Sea ◽  
The Arctic ◽  
Mackenzie Delta ◽  
Fluorescence Excitation ◽  
North East ◽  
The North ◽  
Fluorescent Dissolved Organic Matter ◽  
Solar Radiation Incident ◽  
Mackenzie River

Abstract. Water masses from the Beaufort Sea in the Arctic Ocean were evaluated for dissolved organic carbon (DOC), and optical characteristics including UV and PAR diffuse attenuation (Kd), and chromophoric and fluorescent dissolved organic matter (CDOM and FDOM) as part of the MALINA field campaign (30 July to 27 August). Even with relatively low mean daily solar radiation incident on the sea surface (0.12 ± 0.03, 8.46 ± 1.64 and 18.09 ± 4.20 kJ m−2 for UV-B (305 nm), UV-A (380 nm) and PAR, respectively), we report significant light penetration with 10% irradiance depths (Z10% (λ)) reaching 9.5 m for 340 nm (UV-A) radiation in the Eastern sector and 4.5 m in the Mackenzie River influenced area (Western sector). Spectral absorption coefficients (aCDOM (350 nm) (m−1)) were significantly correlated to both diffuse attenuation coefficients (Kd) in the UV-A and UV-B and to DOC concentrations. This indicates CDOM as the dominant attenuator of UV solar radiation and suggests its use as an optical proxy for DOC concentrations in this region. Extrapolating CDOM to DOC relationships, we estimate that ~ 16% of the DOC in the Mackenzie River does not absorb radiation at 350 nm. DOC and CDOM discharges by the Mackenzie River during the MALINA Cruise are estimated as ~ 0.22 TgC and 0.18 TgC, respectively. Three dissolved fluorescent components (C1–C3) were identified by fluorescence Excitation/Emission Matrix Spectroscopy (EEMS) and PARAFAC analysis. Our results showed an in-situ biological component (C1) that co-dominated with a terrestrial humic-like component (C2) in the Mackenzie Delta sector, whereas the protein-like (C3) component dominated in the saltiest waters of the North East sector.

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