Analysis of Heavy Minerals in Arenaceous Lutites From the Northern Canada Basin, Arctic Ocean ...
Heavy minerals from arenaceous lutites in three widely spaced cores from the northern Canada Basin were analyzed for the first time to determine the provenance of these sediments. The abundant minerals (sp. gr. == 2.70) in decreasing order for most samples were detrital carbonate, micas, clinoamphib...
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Old Dominion University
1982
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| Online Access: | https://dx.doi.org/10.25777/qzwy-2c79 https://digitalcommons.odu.edu/oeas_etds/306/ |
| Summary: | Heavy minerals from arenaceous lutites in three widely spaced cores from the northern Canada Basin were analyzed for the first time to determine the provenance of these sediments. The abundant minerals (sp. gr. == 2.70) in decreasing order for most samples were detrital carbonate, micas, clinoamphibole, clinopyroxene, garnet, epidote, tourmaline, and chlorite. The majority of pyroxene grains were etched. Sedimentary sources dominated and metamorphic and igneous sources were important but secondary. The northern Canada Arctic Archipelago and northern Greenland is proposed as the provenance for the heavy minerals in the arenaceous lutites for at least the past three million years. The sediments represent ice-rafted deposition during increased periods of glacial activity. Results obtained imply that input from continental glaciers of mainland Canada as distinct from glaciers originating in the northern Canada Arctic Archipelago and northern Greenland has been relatively unimportant for the northern Canada Basin ... |
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