Index Catalog // ScholarsArchive@OSU

Crustal inheritance and a top-down control on arc magmatism at Mount St. Helens

Creator:: Bedrosian, Paul A., Peacock, Jared R., Bowles-Martinez, Esteban, Schultz, Adam, and Hill, Graham
Abstract:: In a subduction zone, the volcanic arc marks the location where magma, generated via flux melting in the mantle wedge, migrates through the crust and erupts. While the location of deep magma broadly defines the arc position, here we argue that crustal structures, identified in geophysical data from the Washington...
Resource Type:: Article
Full Text:: magmatism at Mount St. Helens 1 2 Paul A. Bedrosian1*, Jared R. Peacock2, Esteban Bowles-Martinez3

Meeting of the magmas : the evolutionary history of the Kalama Eruptive Period, Mount St. Helens, Washington

Creator:: Lieuallen, Athena Erin
Abstract:: Comprehension of eruptive histories is critical in understanding the evolution of magmatic systems at arc volcanoes and may supply evidence to the petrogenesis of intermediate and evolved magmas. Within the 300 ka eruptive history of Mount St. Helens, Washington, the Kalama Eruptive Period, 1479- ~1750 CE was bracketed by interludes...
Resource Type:: Masters Thesis
Full Text:: of the Magmas: the Evolutionary History of the Kalama Eruptive Period, Mount St. Helens, Washington

The role of subduction fluids in generating compositionally diverse basalts in the Cascadia subduction zone

Creator:: Rowe, Michael C.
Abstract:: The primary goal of this study is to assess the impact of a subduction component added to the mantle wedge beneath the Oregon Cascades to the composition and fO2 of primitive Cascade basalts. Olivine-hosted melt inclusions from compositionally diverse basalts across the Cascade arc (~100 km) are utilized in an...
Resource Type:: Dissertation

A landscape-scale analysis of vegetation recovery at Mount St. Helens

Creator:: Lawrence, Rick L.
Abstract:: I used satellite remote sensing to examine the key factors controlling the natural revegetation of Mount St. Helens since its eruption in 1980. The study required three stages: determining the amount of vegetation present; characterizing vegetation change; and analyzing the influence of factors affecting vegetation change. To determine the amount...
Resource Type:: Dissertation

Volcanism, Climate Change. and Prehistoric Cultural Succession in Southern Washington and North-Central Idaho

Creator:: Davis, Loren G. (Loren Gerald), 1969-
Abstract:: The cultural influence of volcanic eruptions has been emphasized in the archaeological literature. However, the larger effects that Mount St. Helens volcanic eruptions had upon prehistoric populations in the Pacific Northwest is not understood. This thesis asks questions of the archaeological and paleoenvironmental record of the Pacific Northwest to assess...
Resource Type:: Masters Thesis

Tourism and community perceptions : an examination of Mount St. Helens' tourism as perceived by local residents

Creator:: Baker, Randal G.
Abstract:: Since the eruption of Mount St. Helens on May 18,1980, the rural communities within its shadow have experienced tremendous change. Tourism has become a highly visible and somewhat controversial component of change in the region, and its importance to local economies has increased. As a result of increased tourism development...
Resource Type:: Dissertation

Riparian vegetation recovery in the blast and airfall tephra zones of Mount St. Helens, Washington

Creator:: Kiilsgaard, Christen W.
Abstract:: Riparian vegetation patterns within the blast, downstream of blast, and airfall tephra zones of Mount St. Helens are related to initial and secondary volcanic disturbance, post-eruption fluvial landforms, channel geometry, and streamflow characteristics. Vegetation patterns were determined from species presence observed on transects across landforms developed along the streams. Distinct...
Resource Type:: Masters Thesis

Geomorphological analysis of North Fork Toutle River, Washington, 1980-1984

Creator:: Pearson, Monte L.
Abstract:: The 18 May 1980 eruption of Mount St. Helens, emplaced between 3-3.5 billion cubic yards (bcy) of poorly sorted material ranging from silt to boulders, extending from river mile (RM) 25 to RM 38 in the upper North Fork Toutle River drainage. Sediment yields from the debris avalanche were calculated...
Resource Type:: Dissertation

Revegetation-microhabitat relations in the blast zone of Mount St. Helens

Creator:: Gallant, Alisa L.
Abstract:: The Mount St. Helens eruption of May 18, 1980, offered an excellent setting for evaluating early response of ecosystems to disturbance. Prior to the eruption, the area was densely forested with fir, hemlock, and Douglas-fir, and various understory species. During the course of the eruption, hillslopes within a 180 degree...
Resource Type:: Masters Thesis
Full Text:: Mount St. Helens AN ABSTRACT OF THE THESIS OF Alisa L. Gallant for the degree of Master of Science in

Spatial and temporal changes in stream network topology : post-eruption drainage, Mount St. Helens

Creator:: Parsons, Michael Raymond
Resource Type:: Dissertation

ScholarsArchive@OSU

Crustal inheritance and a top-down control on arc magmatism at Mount St. Helens

Meeting of the magmas : the evolutionary history of the Kalama Eruptive Period, Mount St. Helens, Washington

The role of subduction fluids in generating compositionally diverse basalts in the Cascadia subduction zone

A landscape-scale analysis of vegetation recovery at Mount St. Helens

Volcanism, Climate Change. and Prehistoric Cultural Succession in Southern Washington and North-Central Idaho

Tourism and community perceptions : an examination of Mount St. Helens' tourism as perceived by local residents

Riparian vegetation recovery in the blast and airfall tephra zones of Mount St. Helens, Washington

Geomorphological analysis of North Fork Toutle River, Washington, 1980-1984

Revegetation-microhabitat relations in the blast zone of Mount St. Helens

Spatial and temporal changes in stream network topology : post-eruption drainage, Mount St. Helens

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