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Geology of the Mount St. Helens area; record of discontinuous volcanicand plutonic activity in the Cascade Arc of southern Washington

Anonymous (1987) Geology of the Mount St. Helens area; record of discontinuous volcanicand plutonic activity in the Cascade Arc of southern Washington. Journal of Geophysical Research, vol.92, no.B10, pp.10,155-10,169, 10Sep 1987

AuthorsAnonymous
Year1987
TitleGeology of the Mount St. Helens area; record of discontinuous volcanicand plutonic activity in the Cascade Arc of southern Washington
SourceJournal of Geophysical Research, vol.92, no.B10, pp.10,155-10,169, 10Sep 1987
ISSN0148-0227
GeoRef1988-001147
Keywordsabsolute age; Cascade Range; Cenozoic; dates; emplacement; eruptions;geochronology; igneous rocks; intrusions; K/Ar; Mount Saint Helens;periodicity; plate convergence; plate tectonics; plutons; SkamaniaCounty Washington; southwestern Washington; United States; volcanicrocks; volcanism; volcanoes; volcanology; Washington

44 samples from this reference

SampleRock nameMajorTraceIsotope
S82-A3-E32Andesite yes
S80-A1-S02Tuff yes
S78-A1-E209AAndesite yes
S81-A5-R48Andesite yes
S78-B2-E49AAndesite yes
S81-D1-E19Andesite yes
S82-D1-E106Basalt yes
S78-D5-E199ATuff yes
84SH-V82Tuff yes
S77-D3-R12Andesite yes
S81-B5-E43Diorite yes
S78-C5-E123AAndesite yes
84CG-V29Andesite yes
S78-A2-R128Andesite yes
S78-D5-M88AAndesite yes
S78-D5-E168AAndesite yes
S79-A4-R128Granodiorite yes
S80-A4-R06Granodiorite yes
S80-A4-R08Granodiorite yes
MDH6-408/410Granodiorite yes
MDH7-684/687Granodiorite yes
OE38Basalt yes
2R14Basalt yes
3.00E+57Basalt yes
7N26Andesite yes
8M74Gabbro yes
8W21Andesite yes
7N144Andesite yes
3.00E+52Andesite yes
2E125BDiorite yes
8.00E+181Andesite yes
2E35BAndesite yes
2E42AAndesite yes
3E30AAndesite yes
8E199ADacite yes
8R35Dacite yes
7R49Rhyolite yes
84CG-V29Andesite yes
8E168AAndesite yes
8M88AAndesite yes
8R128Andesite yes
S79-C4-E16Granodiorite
S76-C3-N38Granodiorite
S77-C3-J18Granodiorite