| Title: |
Petrological imaging of an active pluton beneath Cerro Uturuncu, Bolivia |
| Authors: |
Muir, Duncan; Blundy, Jon D.; Hutchinson, Michael C.; Rust, Alison C. |
| Publisher Information: |
Springer Verlag |
| Publication Year: |
2014 |
| Collection: |
Cardiff University: ORCA (Online Research @ Cardiff) |
| Subject Terms: |
QE Geology |
| Description: |
Uturuncu is a dormant volcano in the Altiplano of SW Bolivia. A present day ~70 km diameter interferometric synthetic aperture radar (InSAR) anomaly roughly centred on Uturuncu’s edifice is believed to be a result of magma intrusion into an active crustal pluton. Past activity at the volcano, spanning 0.89 to 0.27 Ma, is exclusively effusive and almost all lavas and domes are dacitic with phenocrysts of plagioclase, orthopyroxene, biotite, ilmenite and Ti-magnetite plus or minus quartz, and microlites of plagioclase and orthopyroxene set in rhyolitic groundmass glass. Plagioclase-hosted melt inclusions (MI) are rhyolitic with major element compositions that are similar to groundmass glasses. H2O concentrations plotted versus incompatible elements for individual samples describe a trend typical of near-isobaric, volatile-saturated crystallisation. At 870 °C, the average magma temperature calculated from Fe–Ti oxides, the average H2O of 3.2 ± 0.7 wt% and CO2 typically |
| Document Type: |
article in journal/newspaper |
| Language: |
unknown |
| Relation: |
Muir, Duncan https://orca.cardiff.ac.uk/view/cardiffauthors/A2177089P.html, Blundy, Jon D., Hutchinson, Michael C. and Rust, Alison C. 2014. Petrological imaging of an active pluton beneath Cerro Uturuncu, Bolivia. Contributions to Mineralogy and Petrology 167 (3) , 980. 10.1007/s00410-014-0980-z https://doi.org/10.1007/s00410-014-0980-z |
| DOI: |
10.1007/s00410-014-0980-z |
| Availability: |
https://orca.cardiff.ac.uk/id/eprint/83821/; https://doi.org/10.1007/s00410-014-0980-z |
| Accession Number: |
edsbas.3C9DA3D9 |
| Database: |
BASE |