کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9531679 1638503 2005 26 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Origin of rhyolite by crustal melting and the nature of parental magmas in the Oligocene Conejos Formation, San Juan Mountains, Colorado, USA
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
Origin of rhyolite by crustal melting and the nature of parental magmas in the Oligocene Conejos Formation, San Juan Mountains, Colorado, USA
چکیده انگلیسی
Our study supports the conclusions of previous workers on AFC processes in similar, but generally more mafic, Conejos magmas of the southeastern San Juan Mountains. Our results, however, emphasize the importance of crustal melting in the generation of Conejos rhyolite. We further speculate that Conejos magmatism, and the San Juan Volcanic Field (SJVF) in general, may represent an early phase of Rio Grande rift magmatism, the orogenic geochemical signature of the series having been generated through multi-level and extensive assimilation of varied Precambrian orogenic and anorogenic rocks.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Volcanology and Geothermal Research - Volume 139, Issues 3–4, 15 January 2005, Pages 185-210
نویسندگان
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