Peninsular Ranges Batholith, Baja California and Southern California

Santiago Peak volcanics: Early Cretaceous arc volcanism of the western Peninsular Ranges batholith, southern California
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Published:January 01, 2014
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CiteCitation
Charles T. Herzig, David L. Kimbrough, 2014. "Santiago Peak volcanics: Early Cretaceous arc volcanism of the western Peninsular Ranges batholith, southern California", Peninsular Ranges Batholith, Baja California and Southern California, Douglas M. Morton, Fred K. Miller
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The Santiago Peak volcanics, in the northern Santa Ana Mountains, are the northernmost exposures of the Santiago Peak–Alisitos magmatic arc present along the western edge of the Peninsular Ranges batholith. Remnants of deeply eroded volcanic sequences in the Santa Ana Mountains consist of subaerial basaltic-andesite to rhyolite lavas, rare basalt, welded tuff, and pyroclastic rocks that were emplaced across deformed Middle Jurassic turbidites. Subalkaline lavas have mixed calc-alkaline and tholeiitic affinities. Relatively primitive εSr (−18 to +5) and εNd (+7.5 to +0.1) values for the lavas plot along the mantle array. Silicic lavas have higher εSr and...
- absolute age
- alkaline earth metals
- amphibole group
- andesites
- Ar/Ar
- assimilation
- basalts
- basins
- California
- chain silicates
- clinoamphibole
- continental margin
- Cretaceous
- crystal fractionation
- dates
- emplacement
- fore-arc basins
- hornblende
- igneous rocks
- island arcs
- isotopes
- lava
- Lower Cretaceous
- magmas
- mantle
- mantle wedges
- mass spectra
- Mesozoic
- metals
- metamorphic rocks
- neodymium
- nesosilicates
- North America
- North American Cordillera
- orthosilicates
- Peninsular Ranges Batholith
- protoliths
- pyroclastics
- rare earths
- rhyolites
- samarium
- Santa Ana Mountains
- silicates
- Southern California
- spectra
- strontium
- supracrustals
- tectonics
- turbidite
- U/Pb
- United States
- volcanic rocks
- volcanism
- whole rock
- zircon
- zircon group
- Alisitos Group
- Santiago Peak