Volatile Analysis of Glaciovolcanic Glass Rinds Collected From Pillow Ridge in the Mount Edziza Volcanic Complex, Ncvp, British Columbia, Canada
Quenched glass rinds that form during lava-ice interactions on pillow lavas have proven to be helpful in constructing models for paleo-ice thickness of previously glaciated regions (Jakobbson and Gudmundsson, 2008). Glass samples were acquired from a variety of pillow exposures at Pillow Ridge tinda...
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ftcollegewooster:oai:openworks.wooster.edu:independentstudy-8319 2023-05-15T16:41:16+02:00 Volatile Analysis of Glaciovolcanic Glass Rinds Collected From Pillow Ridge in the Mount Edziza Volcanic Complex, Ncvp, British Columbia, Canada Reinthal, Mary C 2016-01-01T08:00:00Z application/pdf https://openworks.wooster.edu/independentstudy/7399 https://openworks.wooster.edu/cgi/viewcontent.cgi?article=8319&context=independentstudy English (United States) eng Open Works https://openworks.wooster.edu/independentstudy/7399 https://openworks.wooster.edu/cgi/viewcontent.cgi?article=8319&context=independentstudy Senior Independent Study Theses glaciovolcanic volatile Geology Geochemistry Volcanology text 2016 ftcollegewooster 2022-04-27T05:45:51Z Quenched glass rinds that form during lava-ice interactions on pillow lavas have proven to be helpful in constructing models for paleo-ice thickness of previously glaciated regions (Jakobbson and Gudmundsson, 2008). Glass samples were acquired from a variety of pillow exposures at Pillow Ridge tindar in the Mount Edziza Volcanic Complex of (MEVC). Here, we combine Fourier Transform Infrared Spectrometry (FTIR) analysis of volatiles in 95 doubly polished glass chips with whole rock major element (XRF) analysis, an igneous thermodynamic modeling program for calculating liquid phase equilibria (rhyolite-MELTS), and the VolatileCalc solubility model to calculate emplacement pressures as a proxy for ice thickness at Pillow Ridge (178-925m). Ice thickness calculations were highly variable for the Ridge, although for pillow units, minimum pressures converge at ~20 bars, which is similar to data collected at Iceland (Reinthal et al., 2016). We have determined that the simplifying assumption that that lower overburden pressures create fragmented basalt and that higher pressures will create effusive eruptions should be revised to incorporate complex relationships among eruptive dynamics, magmatic conditions, and ice thickness. We determined that the northern canyons of Pillow Ridge—Pillow Canyon and Slot Canyon—fit into the general Pillow Ridge lithostratigraphy via sub-ice drainage events that occurred during the evolution of the Ridge. With this, we have established a new model for Pillow Ridge combining two previously existing models and further constraining the ice sheet thicknesses for the different pillow packages. Text Ice Sheet Iceland The College of Wooster: Open Works British Columbia ENVELOPE(-125.003,-125.003,54.000,54.000) Canada Mount Edziza ENVELOPE(-130.634,-130.634,57.716,57.716) |
institution |
Open Polar |
collection |
The College of Wooster: Open Works |
op_collection_id |
ftcollegewooster |
language |
English |
topic |
glaciovolcanic volatile Geology Geochemistry Volcanology |
spellingShingle |
glaciovolcanic volatile Geology Geochemistry Volcanology Reinthal, Mary C Volatile Analysis of Glaciovolcanic Glass Rinds Collected From Pillow Ridge in the Mount Edziza Volcanic Complex, Ncvp, British Columbia, Canada |
topic_facet |
glaciovolcanic volatile Geology Geochemistry Volcanology |
description |
Quenched glass rinds that form during lava-ice interactions on pillow lavas have proven to be helpful in constructing models for paleo-ice thickness of previously glaciated regions (Jakobbson and Gudmundsson, 2008). Glass samples were acquired from a variety of pillow exposures at Pillow Ridge tindar in the Mount Edziza Volcanic Complex of (MEVC). Here, we combine Fourier Transform Infrared Spectrometry (FTIR) analysis of volatiles in 95 doubly polished glass chips with whole rock major element (XRF) analysis, an igneous thermodynamic modeling program for calculating liquid phase equilibria (rhyolite-MELTS), and the VolatileCalc solubility model to calculate emplacement pressures as a proxy for ice thickness at Pillow Ridge (178-925m). Ice thickness calculations were highly variable for the Ridge, although for pillow units, minimum pressures converge at ~20 bars, which is similar to data collected at Iceland (Reinthal et al., 2016). We have determined that the simplifying assumption that that lower overburden pressures create fragmented basalt and that higher pressures will create effusive eruptions should be revised to incorporate complex relationships among eruptive dynamics, magmatic conditions, and ice thickness. We determined that the northern canyons of Pillow Ridge—Pillow Canyon and Slot Canyon—fit into the general Pillow Ridge lithostratigraphy via sub-ice drainage events that occurred during the evolution of the Ridge. With this, we have established a new model for Pillow Ridge combining two previously existing models and further constraining the ice sheet thicknesses for the different pillow packages. |
format |
Text |
author |
Reinthal, Mary C |
author_facet |
Reinthal, Mary C |
author_sort |
Reinthal, Mary C |
title |
Volatile Analysis of Glaciovolcanic Glass Rinds Collected From Pillow Ridge in the Mount Edziza Volcanic Complex, Ncvp, British Columbia, Canada |
title_short |
Volatile Analysis of Glaciovolcanic Glass Rinds Collected From Pillow Ridge in the Mount Edziza Volcanic Complex, Ncvp, British Columbia, Canada |
title_full |
Volatile Analysis of Glaciovolcanic Glass Rinds Collected From Pillow Ridge in the Mount Edziza Volcanic Complex, Ncvp, British Columbia, Canada |
title_fullStr |
Volatile Analysis of Glaciovolcanic Glass Rinds Collected From Pillow Ridge in the Mount Edziza Volcanic Complex, Ncvp, British Columbia, Canada |
title_full_unstemmed |
Volatile Analysis of Glaciovolcanic Glass Rinds Collected From Pillow Ridge in the Mount Edziza Volcanic Complex, Ncvp, British Columbia, Canada |
title_sort |
volatile analysis of glaciovolcanic glass rinds collected from pillow ridge in the mount edziza volcanic complex, ncvp, british columbia, canada |
publisher |
Open Works |
publishDate |
2016 |
url |
https://openworks.wooster.edu/independentstudy/7399 https://openworks.wooster.edu/cgi/viewcontent.cgi?article=8319&context=independentstudy |
long_lat |
ENVELOPE(-125.003,-125.003,54.000,54.000) ENVELOPE(-130.634,-130.634,57.716,57.716) |
geographic |
British Columbia Canada Mount Edziza |
geographic_facet |
British Columbia Canada Mount Edziza |
genre |
Ice Sheet Iceland |
genre_facet |
Ice Sheet Iceland |
op_source |
Senior Independent Study Theses |
op_relation |
https://openworks.wooster.edu/independentstudy/7399 https://openworks.wooster.edu/cgi/viewcontent.cgi?article=8319&context=independentstudy |
_version_ |
1766031705999671296 |