Field data and till composition in the GEM-2 Rae Glacial Synthesis Activity field areas, Nunavut and Northwest Territories

Two alkaline igneous complexes and three lines of diatreme breccias were emplaced in the East Arm of Great Slave Lake during the lower Proterozoic. Field relationships suggest that those rocks are broadly cogenetic and were emplaced about 2.1 Ga ago.One of the intrusions, the Easter Island dyke, was rotated subsequent to emplacement such that both top and bottom are now exposed. Field and petrographic data are indicative of progressive differentiation along (i.e., up) the dyke and are substantiated by chemical data. The differentiation history of the early gabbros of the Blachford Lake complex is similar. Late differentiates of both complexes closely resemble the igneous matrices of the breccias and petrographic and chemical data support the proposal of cogenesis and contemporaneity.The field data show that there was a period of significant faulting and concomitant alkaline igneous activity in the East Arm area in the lower Proterozoic.

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Geological and geochemical data from Mackenzie Corridor. Part VII: new geochemical, Rock-Eval 6, and field data from the Ramparts and Canol formations of northern Mackenzie Valley, Northwest Territories

10.4095/306299 ◽

2017 ◽

Cited By ~ 1

Author(s):

P Kabanov

Keyword(s):

Northwest Territories ◽

Field Data ◽

Geochemical Data ◽

Rock Eval

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Inversion of horizontal‐loop electromagnetic field data: Case histories from Ontario and Northwest territories, Canada

10.1190/1.1822117 ◽

1992 ◽

Author(s):

George J. Palacky

Keyword(s):

Electromagnetic Field ◽

Northwest Territories ◽

Field Data ◽

Case Histories

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Observations of soil freezing and frost heave at Inuvik, Northwest Territories, Canada

Canadian Journal of Earth Sciences ◽

10.1139/e85-024 ◽

1985 ◽

Vol 22 (2) ◽

pp. 283-290 ◽

Cited By ~ 46

Author(s):

M. W. Smith

Keyword(s):

Northwest Territories ◽

Field Data ◽

Negative Temperature ◽

Frozen Soil ◽

Soil Freezing ◽

Frost Heave ◽

Moisture Regime ◽

Silty Clay ◽

Field Observations ◽

Moisture Migration

Field observations of soil temperature, moisture regime, and frost heave in silty clay hummocks at Inuvik, Northwest Territories, over the fall and early winter reveal that a significant amount of moisture migration and frost heave occurs within frozen soil at temperatures down to −2.4°C. The field data are analysed using thermodynamic considerations, and the apparent hydraulic conductivity is determined as a function of negative temperature. The conductivity falls from near 7 × 10−9 m s−1 above 0 °C to about 3.5 × 10−12 m s−1 at −1 °C, then remains fairly constant down to −2.4 °C. The observed decrease in heave with time is explained in terms of a diminishing water supply at the base of the active layer.

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