Roger L. Nielsen

Affiliations: 
Oregon State University, Corvallis, OR 
Area:
Geochemistry, Geology
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"Roger Nielsen"
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Publications

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Nielsen RL, Ustunisik G, Lange AE, et al. (2020) Trace Element and Isotopic Characteristics of Plagioclase Megacrysts in Plagioclase Ultraphyric Basalts (PUB) Geochemistry Geophysics Geosystems. 21: 8638
Drignon MJ, Nielsen RL, Tepley FJ, et al. (2019) Upper mantle origin of plagioclase megacrysts from plagioclase-ultraphyric mid-oceanic ridge basalt Geology. 47: 43-46
Drignon MJ, Nielsen RL, Tepley FJ, et al. (2019) Reequilibration Processes Occurring in Plagioclase‐Hosted Melt Inclusions From Plagioclase Ultraphyric Basalts Geochemistry Geophysics Geosystems. 20: 109-119
Ustunisik G, Ebel DS, Walker D, et al. (2019) Trace element partitioning between CAI-type melts and grossite, melilite, hibonite, and olivine Geochimica Et Cosmochimica Acta. 267: 124-146
Nielsen RL, Ustunisik G, Weinsteiger AB, et al. (2017) Trace element partitioning between plagioclase and Melt: An investigation of the impact of experimental and analytical procedures Geochemistry Geophysics Geosystems. 18: 3359-3384
Ustunisik G, Loewen MW, Nielsen RL, et al. (2016) Interpretation of the provenance of small-scale heterogeneity as documented in a single eruptive unit from Mt. Jefferson, Central Oregon Cascades Geochemistry, Geophysics, Geosystems. 17: 3469-3487
Hatfield AK, Nielsen RL, Kent AJR, et al. (2015) Snow Peak, Oregon: Latest Miocene low-K tholeiite volcanism in the Cascadia forearc Lithos. 239: 86-96
Ustunisik G, Kilinc A, Nielsen RL. (2014) New insights into the processes controlling compositional zoning in plagioclase Lithos. 200: 80-93
Lange AE, Nielsen RL, Tepley FJ, et al. (2013) Diverse sr isotope signatures preserved in mid-oceanic-ridge basalt plagioclase Geology. 41: 279-282
Lange AE, Nielsen RL, Tepley FJ, et al. (2013) The petrogenesis of plagioclase-phyric basalts at mid-ocean ridges Geochemistry, Geophysics, Geosystems. 14: 3282-3296
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