Magnesium Isotopes as a Tracer of Crustal Materials in Volcanic Arc Magmas in the Northern Cascade Arc
نویسندگان
چکیده
منابع مشابه
Magnesium Isotopes as a Tracer of Crustal Materials in Volcanic Arc Magmas in the Northern Cascade Arc
Fifteen North Cascade Arc basalts and andesites were analyzed for Mg isotopes to investigate the extent and manner of crustal contributions to this magmatic system. The δ 26Mg of these samples vary from within the range of ocean island basalts (the lightest being −0.33 ± 0.07‰) to heavier compositions (as heavy as −0.15 ± 0.06‰). The observed range in chemical and isotopic composition is simila...
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ژورنال
عنوان ژورنال: Frontiers in Earth Science
سال: 2018
ISSN: 2296-6463
DOI: 10.3389/feart.2018.00021