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ndltd-OhioLink-oai-etd.ohiolink.edu-ucin1213234666
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ndltd-OhioLink-oai-etd.ohiolink.edu-ucin12132346662021-08-03T06:12:52Z Dynamics of Cooling and Plagioclase Crystallization in a Feeder Dike of the Columbia River Flood Basalt Group BROCKMAN, TRACY Image analysis of crystal sizes for plagioclases from a basaltic trachy-andesite feeder dike of the Columbia River Flood Basalt Province yields a linear relation when the natural log of the number of plagioclase crystals of a given size interval per volume is plotted against L (cm). The slope of this line, −(1/Gτ), is related to the plagioclase growth rate, G (cm/sec), and the magma residence time, τ (seconds). For one sample, an observed slope of −5.0329 corresponds to values of τ of 1.9 years, determined using conductive cooling equations. The derived value for G is 1∗10−8.9 cm/sec, in good agreement with previously published results for the plagioclase growth rates found for larger basaltic magma bodies. 2008-09-22 English text University of Cincinnati / OhioLINK http://rave.ohiolink.edu/etdc/view?acc_num=ucin1213234666 http://rave.ohiolink.edu/etdc/view?acc_num=ucin1213234666 unrestricted This thesis or dissertation is protected by copyright: all rights reserved. It may not be copied or redistributed beyond the terms of applicable copyright laws.
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NDLTD
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| language |
English
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NDLTD
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| author |
BROCKMAN, TRACY
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| spellingShingle |
BROCKMAN, TRACY
Dynamics of Cooling and Plagioclase Crystallization in a Feeder Dike of the Columbia River Flood Basalt Group
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| author_facet |
BROCKMAN, TRACY
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| author_sort |
BROCKMAN, TRACY
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| title |
Dynamics of Cooling and Plagioclase Crystallization in a Feeder Dike of the Columbia River Flood Basalt Group
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| title_short |
Dynamics of Cooling and Plagioclase Crystallization in a Feeder Dike of the Columbia River Flood Basalt Group
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| title_full |
Dynamics of Cooling and Plagioclase Crystallization in a Feeder Dike of the Columbia River Flood Basalt Group
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| title_fullStr |
Dynamics of Cooling and Plagioclase Crystallization in a Feeder Dike of the Columbia River Flood Basalt Group
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| title_full_unstemmed |
Dynamics of Cooling and Plagioclase Crystallization in a Feeder Dike of the Columbia River Flood Basalt Group
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| title_sort |
dynamics of cooling and plagioclase crystallization in a feeder dike of the columbia river flood basalt group
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| publisher |
University of Cincinnati / OhioLINK
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| publishDate |
2008
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| url |
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1213234666
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| work_keys_str_mv |
AT brockmantracy dynamicsofcoolingandplagioclasecrystallizationinafeederdikeofthecolumbiariverfloodbasaltgroup
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| _version_ |
1719432828752494592
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