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...
Full Text:
; Hedenquist and Lowenstern, 1994; Wallace, 2003; deHoog
et al., 2004; Wallace, 2005).
49
Magmatic
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...
Full Text:
; Berlo et al., 2004). A
210
Pb excess and a large Li spike in
plagioclase feldspars (up to ~23 g/g
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...
Full Text:
) images of (A) SH304
groundmass, (B) MSH04MR_11_4 ash fragment (feldspar
Li concentration of 33.7 µg/g