Magma evolution in the Purico ignimbrite complex, northern Chile: evidence for zoning of a dacitic magma by injection of rhyolitic melts following mafic recharge

The 1.3 Ma Purico complex is part of an extensive Neogene-Pleistocene ignimbrite province in the central Andes. Like most other silicic complexes in the province, Purico is dominated by monotonous intermediate ash-flow sheets and has volumetrically minor lava domes.

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Bibliographic Details
Published in:Contributions to mineralogy and petrology 2001-03, Vol.140 (6), p.680-700
Main Authors: Schmitt, A., de Silva, S., Trumbull, R., Emmermann, R.
Format: Article
Language:English
Subjects:
Andesite
Ascent
Basalt
Carbon dioxide
Crystals
Domes
Flow
Fractionation
Geology
Geotemperature
High temperature
Inclusions
Lava
Lava domes
Lithology
Magma
Magma chambers
Mantle
Mineralogy
Mountains
Neogene
Petrology
Plagioclase
Pleistocene
Pumice
Replenishment
Rhyolite
Rhyolites
Silica
Silicon dioxide
Storage conditions
Stratigraphy
Strontium 87
Strontium isotopes
Viscosity
Volcanoes
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Description
Summary:The 1.3 Ma Purico complex is part of an extensive Neogene-Pleistocene ignimbrite province in the central Andes. Like most other silicic complexes in the province, Purico is dominated by monotonous intermediate ash-flow sheets and has volumetrically minor lava domes.
ISSN:0010-7999
1432-0967
DOI:10.1007/s004100000214