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Filtering by: Creator Fisk, Scott Advisor Nielsen, Roger L.

Olivine and plagioclase-hosted melt inclusions and their application to determining parental arc magmas

Creator:

Kohut, Edward John

Abstract:

Three broadly interrelated problems of critical significance to the proper interpretation of melt inclusion (MI) data are addressed in this thesis. The first issue, the petrogenesis of anorthitic plagioclase phenocrysts in MORB lavas, has relevance due to the presence of numerous MI in many high-An feldspars. This problem was addressed...

Resource Type:

Dissertation

Full Text:

raising the Ca!Na or Al of the melt (Fisk, 1984; Panjasawatwong et al., 1995). Increasing pressure
Magmatic processes beneath mid-ocean ridges : insights from mineral and glass chemistry in plagioclase ultraphyric basalts

Creator:

Lange, Amy E.

Abstract:

Prior to eruption at mid-ocean ridges, melts must travel through >6 km of crust from their origin in the mantle. The final composition of the melts is dependent on both the melting conditions and magmatic processes within the crust. While mid-ocean ridge basalt (MORB) glasses are commonly used to infer...

Resource Type:

Dissertation

Full Text:

, R., Hascall, K., Forsythe, L.M., Fisk, M.R., and Christie, D.M., 1995, Melt inclusions in high-An
Snow Peak, OR: late Miocene to early Pliocene volcanism in the central Cascadia forearc

Creator:

Hatfield, Ashley K.

Abstract:

Snow Peak is a voluminous shield volcano located ~50 km west of the axis of the modern Cascade arc. A previously published K-Ar age estimate indicates that the Snow Peak lavas are ~3 Ma. Subsequently, the preliminary research framework for studying the Snow Peak lavas focused on constraining the petrogenesis...

Resource Type:

Masters Thesis

Full Text:

the samples collected for this study, and Dennis St. Clair and Scott Marlega granted me access to