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Eocene potassic magmatism in the Highwood Mountains, Montana; petrology, geochemistry, and tectonic implications

Anonymous (1991) Eocene potassic magmatism in the Highwood Mountains, Montana; petrology, geochemistry, and tectonic implications. Journal of Geophysical Research, B, Solid Earth and Planets, vol.96, no.8, pp.13,237-13,260, 30 Jul 1991

AuthorsAnonymous
Year1991
TitleEocene potassic magmatism in the Highwood Mountains, Montana; petrology, geochemistry, and tectonic implications
SourceJournal of Geophysical Research, B, Solid Earth and Planets, vol.96, no.8, pp.13,237-13,260, 30 Jul 1991
ISSN0885-3401
GeoRef1991-038713
Keywordsalkalic composition; alkaline earth metals; asthenosphere; Cenozoic; Chouteau County Montana; composition; Eocene; fractional crystallization; genesis; geochemistry; Highwood Mountains; hybridization; igneous rocks; isotopes; Judith Basin County Montana; lead; mafic magmas; magmas; metals; Montana; Nd-144/Nd-143; neodymium; north-central Montana; Paleogene; partial melting; petrology; plate tectonics; plutonic rocks; potassic composition; rare earths; Sr-87/Sr-86; stable isotopes; strontium; Tertiary; trace elements; United States; volcanic rocks

20 samples from this reference

SampleRock nameMajorTraceIsotope
HM343Latite yesyes
HM615bPhonolite yesyes
HM144Phonolite yesyes
HM138Phonolite yesyes
HM494aPhonolite yesyes
HM652aLamprophyre yesyes
HM626bMinette yesyes
HM622Minette yesyes
HM492Minette yesyes
HM444Minette yesyes
HM547Shonkinite yesyes
HM348Malignite yesyes
HM562Lamproite yesyes
HM406Clinopyroxenite yesyes
HM582Syenite yesyes
HM598bMonzonite yesyes
HM538Tinguaite yesyes
HM231aTrachyte yesyes
HM334aTrachyte yesyes
HB01Peridotite yesyes