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Geochemistry and Petrogenesis of Late Cretaceous Bentonites from the Kanguk Formation, Axel Heiberg and Ellesmere Islands, Canadian High Arctic
(1994-03-15)
Petrographic and geochemical analyses of bulk bentonites, volcanic minerals, and unaltered glass inclusions in quartz phenocrysts reveal the composition and tectonic setting of Late Cretaceous explosive volcanism in the ...
Paleoenvironmental Analysis of Halifax Harbour: Sedimentology, Paleoclimatology, and Holocene Sea Level
(1994-03-15)
Three cores (numbered 2,9,10) collected from Halifax Harbour using new submersible vibracoring equipment permits a reinterpretation of an acoustically distinct seismostratigraphic unit. This unit, never previously sampled, ...
Holocene Relative Sea-Level Change in Nova Scotia
(1993-03-15)
Core samples collected around Atlantic Canada, specifically from the West Head salt marsh, Chezzetcook Inlet, enable temporal and spatial examination of benthic foraminiferal assemblages. Benthic foraminiferal zonations, ...
Comparison of Siliceous Volcanics from the Clarno and John Day Formations, Oregon
(1993-03-15)
The Tertiary Clarno and John Day Formations occur in the Blue Mountains Region of north-eastern Oregon. The two formations are easily distinguishable overall, because the Clarno consists primarily of andesitic to dacitic ...
Origin of Foliation in the Barrington Passage Pluton
(1991-04-15)
New studies provide insight into the processes producing the penetrative foliation observed in the Barrington Passage Pluton (BPP). Preferred alignment of primary minerals, imbrication of feldspars, preferred alignment of ...
The Petrochemistry and Origin of the Bourne Complex, Northwestern Ellesmere Island, Canada
(1991-04-15)
New petrological and petrochemical analyses provide insight into the origin of the hypabyssal and volcanic rocks of the Bourne Complex, northwestern Ellesmere Island, Canada. Field relationships and petrographic characteristics ...
Geophysical Modelling of the LaHave Clay and Emerald Silt Formations, Lahave Basin
(1990-04-15)
A seismic reflection profile across part of the LaHave Basin shows 4 continuous, strong reflectors. This study relates the observed seismic reflection data to the measured physical properties (velocity, density, porosity, ...
Correlation and 40Ar/39Ar Age Dating of the Early Cretaceous Walker Island Member Basalts Axel Heiberg Island - Canadian Arctic
(1991-04-15)
Previous studies have documented the presence of magnetic polarity reversals, which could represent the earliest M0 or M1 reversal of the M-Sequence, in the Early Cretaceous (Aptian-Barremian) sedimentary/volcanic stratigraphic ...
Thermobarometry of Meta-Sedimentary Enclaves in the Ten Mile Lake Intrusion, Liscomb, Nova Scotia
(1990-04-15)
A section of a drill core from the area of the Ten Mile Lake, Liscomb Complex, Nova Scotia, contains many small metasedimentary enclaves in a felsic host. The enclaves investigated are calc-silicate and metapelites and ...
Muscovite 40Ar/39Ar Geochronology of the Western Parry Sound and Britt Domains, Central Gneiss Belt, Grenville Province
(1991-04-15)
40Ar/39Ar analysis of ten muscovite samples from the western Central Gneiss Belt, Grenville Province, Ontario, yielded good argon spectra. The ages calculated show a trend of decreasing age southward into the orogenic ...