Slab-derived sulfate generates oxidized basaltic magmas in the southern Cascade arc (California, USA)
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DOI: 10.1130/g48759.1
Abstract: Whether and how subduction increases the oxidation state of Earth’s mantle are two of the most important unresolved questions in solid Earth geochemistry. Using data from the southern Cascade arc (California, USA), we show quantitatively… read more here.
Keywords: slab; cascade arc; southern cascade; arc california ... See more keywords
Using mineral geochemistry to decipher slab, mantle, and crustal input in the generation of high-Mg andesites and basaltic andesites from the northern Cascade Arc
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DOI: 10.2138/am-2017-5756
Abstract: Abstract To better understand the role of slab melt in the petrogenesis of North Cascades magmas, this study focuses on petrogenesis of high-Mg lavas from the two northernmost active volcanoes in Washington. High-Mg andesites (HMA)… read more here.
Keywords: sio2; geochemistry; hmba; cascade arc ... See more keywords