Geology and hydrothermal alteration, Glass Buttes, Southeast Oregon

Geology and hydrothermal alteration, Glass Buttes, Southeast Oregon

The Glass Buttes volcanic complex consists of many domes and individual vents that erupted both rhyolitic and basaltic lavas during the late Miocene to early Pliocene. The east half of the complex, in the vicinity of Little Glass Butte, contains interfingering, finely flow-banded rhyolite and black...

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Bibliographic Details
Main Author: Berri, Dulcy Annette
Format: Others
Published: PDXScholar 1982
Subjects:
Areal Geology
Volcanology
Oregon
Hydrothermal Alteration
Geology
Online Access:https://pdxscholar.library.pdx.edu/open_access_etds/3158
https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=4164&context=open_access_etds
id ndltd-pdx.edu-oai-pdxscholar.library.pdx.edu-open_access_etds-4164
record_format oai_dc
spelling ndltd-pdx.edu-oai-pdxscholar.library.pdx.edu-open_access_etds-41642019-10-20T04:29:49Z Geology and hydrothermal alteration, Glass Buttes, Southeast Oregon Berri, Dulcy Annette The Glass Buttes volcanic complex consists of many domes and individual vents that erupted both rhyolitic and basaltic lavas during the late Miocene to early Pliocene. The east half of the complex, in the vicinity of Little Glass Butte, contains interfingering, finely flow-banded rhyolite and black obsidian flows. The youngest unit, an obsidian, has been dated at 4.9 m.y. East of Little Glass Butte lie two northwest-trending ridges, Antelope and Cascade Ridges, composed of two or more overlapping exogenous domes that formed along northwest-trending faults. 1982-01-01T08:00:00Z text application/pdf https://pdxscholar.library.pdx.edu/open_access_etds/3158 https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=4164&context=open_access_etds Dissertations and Theses PDXScholar Areal Geology Volcanology Oregon Hydrothermal Alteration Geology Volcanology
collection NDLTD
format Others
sources NDLTD
topic Areal Geology
Volcanology
Oregon
Hydrothermal Alteration
Geology
Volcanology
spellingShingle Areal Geology
Volcanology
Oregon
Hydrothermal Alteration
Geology
Volcanology
Berri, Dulcy Annette
Geology and hydrothermal alteration, Glass Buttes, Southeast Oregon
description The Glass Buttes volcanic complex consists of many domes and individual vents that erupted both rhyolitic and basaltic lavas during the late Miocene to early Pliocene. The east half of the complex, in the vicinity of Little Glass Butte, contains interfingering, finely flow-banded rhyolite and black obsidian flows. The youngest unit, an obsidian, has been dated at 4.9 m.y. East of Little Glass Butte lie two northwest-trending ridges, Antelope and Cascade Ridges, composed of two or more overlapping exogenous domes that formed along northwest-trending faults.
author Berri, Dulcy Annette
author_facet Berri, Dulcy Annette
author_sort Berri, Dulcy Annette
title Geology and hydrothermal alteration, Glass Buttes, Southeast Oregon
title_short Geology and hydrothermal alteration, Glass Buttes, Southeast Oregon
title_full Geology and hydrothermal alteration, Glass Buttes, Southeast Oregon
title_fullStr Geology and hydrothermal alteration, Glass Buttes, Southeast Oregon
title_full_unstemmed Geology and hydrothermal alteration, Glass Buttes, Southeast Oregon
title_sort geology and hydrothermal alteration, glass buttes, southeast oregon
publisher PDXScholar
publishDate 1982
url https://pdxscholar.library.pdx.edu/open_access_etds/3158
https://pdxscholar.library.pdx.edu/cgi/viewcontent.cgi?article=4164&context=open_access_etds
work_keys_str_mv AT berridulcyannette geologyandhydrothermalalterationglassbuttessoutheastoregon
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