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http://hdl.handle.net/11375/17788
Title: | Geochronology and K/Rb Ratios of an Anorthosite Near Parry Sound, Ontario |
Authors: | Fryer, Brian Jackson |
Advisor: | McNutt, R. H. |
Department: | None |
Keywords: | Parry Sound, Ontario;metanorthosite;K/Rb ratio |
Publication Date: | Apr-1968 |
Abstract: | <p> The primary purpose of this study was to date the last metamorphism of a metanorthosite near Parry Sound, Ontario, by the Rb-Sr method on the mineral phases: biotite, hornblende and plagioclase. Due to problems with the mass spectrometer, the prepared samples could not be run. </p> <p> K/Rb ratios on biotites and plagioclase give a calculated K/Rb whole rock ratio for the mafic rich bands of about 230, consistent with the main trend of igneous rocks. The plagioclase K/Rb ratio, however, is much higher, and the anorthosite body as a whole may have a much higher K/Rb ratio, consistent with oceanic tholeiites and achondritic meteorites and indicating a possible lower crustal or mantle origin. </p> |
URI: | http://hdl.handle.net/11375/17788 |
Appears in Collections: | Bachelor theses |
Files in This Item:
File | Description | Size | Format | |
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Fryer_Brian_J_1968Apr_BSc.pdf | 5.88 MB | Adobe PDF | View/Open |
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