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http://hdl.handle.net/11375/8806
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DC Field | Value | Language |
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dc.contributor.advisor | Crocket, J. H. | en_US |
dc.contributor.author | Wolff, Marvin John | en_US |
dc.date.accessioned | 2014-06-18T16:44:03Z | - |
dc.date.available | 2014-06-18T16:44:03Z | - |
dc.date.created | 2009-06-29 | en_US |
dc.date.issued | 1977-04 | en_US |
dc.identifier.other | opendissertations/398 | en_US |
dc.identifier.other | 1216 | en_US |
dc.identifier.other | 883789 | en_US |
dc.identifier.uri | http://hdl.handle.net/11375/8806 | - |
dc.description.abstract | <p>The major and trace element geochemistry together with the Rb-Sr isotopic data indicate the Stephen Lake Pluton and Kakagi Lake volcanic suite to be possible differentiates of parent magmas of similar composition.</p> <p>A co-magmatic origin of plutonic and volcanic felsic rocks is weakly suggested by normative mineral differentiation trends, major element similarities, K/Rb, Rb/Sr and Rb/Sr/Ba ratios and by differences in K, Rb, Ba and Zr contents.</p> <p>Sr isotopic analysis reveals that the Stephen Lake Pluton possesses an initial ratio of 0.7015 ± 0.0007 and an isochron age of 2534 ± 96 Ma. The low initial ratio reflects a basaltic magma source and the introduction of new material into the crust at this time. The Kakagi Lake acid volcanic suite scatters about a reference isochron of 2600 Ma with a low initial ratio. The distinctive low initial ratios of both the pluton and the volcanics are strongly suggestive of a percentage of similar composition.</p> <p>Comparison with surrounding granitoid plutons of the same age suggest the source region was heterogeneous with Rb/Sr ratios ranging from 0.020 to 0.035.</p> | en_US |
dc.subject | Geology | en_US |
dc.subject | Geology | en_US |
dc.title | The Geochemical Nature of an Archean Plutonic-Volcanic Suite as Exemplified by the Kakagi-Stephen Lakes Area, N.W. Ontario | en_US |
dc.type | thesis | en_US |
dc.contributor.department | Geology | en_US |
dc.description.degree | Master of Science (MS) | en_US |
Appears in Collections: | Open Access Dissertations and Theses |
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File | Size | Format | |
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fulltext.pdf | 3.92 MB | Adobe PDF | View/Open |
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