The temporal record of magmatism at Cerro Uturuncu, Bolivian Altiplano

@article{Muir2015TheTR,
  title={The temporal record of magmatism at Cerro Uturuncu, Bolivian Altiplano},
  author={Duncan D. Muir and Dan N. Barfod and Jon Blundy and Alison C. Rust and R. S. J. Sparks and Katherine M. Clarke},
  journal={Special Publications},
  year={2015},
  volume={422},
  pages={57 - 83}
}
Abstract Twenty-six new 40Ar/39Ar plateau ages for 23 lavas and domes from the Uturuncu volcano in the Altiplano of SW Bolivia reveal a protracted eruptive history from 1050±5 to 250±5 ka. Eruptions have been exclusively effusive, producing some 50 km3 of high-K dacites and silicic andesites. Bimodal mineral compositions, complex mineral textures, the presence of andesitic magmatic enclaves within dacites and linear chemical trends on binary element plots all indicate that magma mixing is an… 
The upper crustal magma plumbing system of the Pleistocene Apacheta-Aguilucho Volcanic Complex area (Altiplano-Puna, northern Chile) as inferred from the erupted lavas and their enclaves
Abstract The evolution of the magma plumbing system of the Pleistocene Apacheta-Aguilucho Volcanic Complex area (Altiplano-Puna Volcanic Complex, northern Chile) was investigated through
Eruptive history of Incahuasi, Falso Azufre and El Cóndor Quaternary composite volcanoes, southern Central Andes
Volcanoes can stay dormant for much longer than 10 ka and hence many Quaternary volcanoes lacking Holocene activity have the potential to become active. Reconstructing the eruptive histories of these
Topographic constraints on magma accumulation below the actively uplifting Uturuncu and Lazufre volcanic centers in the Central Andes
Geodetic surveys of Volcan Uturuncu and the Lazufre volcanic complex in the Central Andes of South America reveal sustained surface uplift from magmatic intrusion at depth. However, the decadal
Linking the mafic volcanism with the magmatic stages during the last 1 Ma in the main volcanic arc of the Altiplano-Puna Volcanic Complex (Central Andes)
Abstract The Altiplano-Puna Volcanic Complex is a province of the Central Andes mainly associated, since the Miocene (26 Ma), with the eruption of voluminous silicic magmas (>65 wt % SiO2). The
Magma diversity reflects recharge regime and thermal structure of the crust
TLDR
It is shown, using thermal and petrological modelling, that magma flux and the thermal structure of the crust modulate diversity and temporal evolution of magma chemistry in mid to deep crustal reservoirs.
The Long-Term Life-Cycle of Nevado de Toluca Volcano (Mexico): Insights Into the Origin of Petrologic Modes
The petrologic diversity of volcanic rocks reflects the dynamics of magma reservoirs and the temporal evolution of magma chemistry can provide valuable information for hazard assessment. While some
Synthesis: PLUTONS: Investigating the relationship between Pluton Growth and Volcanism in the Central Andes
The Central Andes is a key global location to study the enigmatic relation between volcanism and plutonism because it has been the site of large ignimbrite-forming eruptions during the past several
Construction and evolution of igneous bodies: Towards an integrated perspective of crustal magmatism
Abstract Field, geochronological and geophysical studies show that many igneous bodies are emplaced incrementally, growing by accretion of successive magma sheets. The existence of melt reservoirs
Geochemistry and age of mafic rocks from the Votuverava Group, southern Ribeira Belt, Brazil: evidence for 1490Ma oceanic back-arc magmatism
Abstract This paper presents new SHRIMP U–Pb zircon and 40 Ar– 39 Ar hornblende ages as well as elemental and Sr–Nd isotopic data for greenschist to amphibolite facies meta-mafic rocks from the
Sr- and Nd- isotope variations along the Pleistocene San Pedro – Linzor volcanic chain, N. Chile: Tracking the influence of the upper crustal Altiplano-Puna Magma Body
Abstract Subduction-related magmas that erupted in the Central Andes during the past 10 Ma are strongly affected by crustal assimilation as revealed by an increase in 87 Sr/ 86 Sr isotope ratios with
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 102 REFERENCES
40Ar/39Ar geochronology of magmatic activity, magma flux and hazards at Ruapehu volcano, Taupo Volcanic zone, New Zealand
We have determined precise eruption ages for andesites from Ruapehu volcano in the Tongariro Volcanic Centre of the Taupo Volcanic Zone (TVZ) using 40Ar/39Ar furnace step-heating of separated
Petrological imaging of an active pluton beneath Cerro Uturuncu, Bolivia
Abstract 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
Experimental Constraints on Dacite Pre-eruptive Magma Storage Conditions beneath Uturuncu Volcano
Cerro Uturuncu is a long-dormant, compositionally monotonous, effusive dacitic volcano in the Altiplano–Puna Volcanic Complex (APVC) of SW Bolivia. The volcano recently gained attention following the
The eruptive history of the Tequila volcanic field, western Mexico: ages, volumes, and relative proportions of lava types
The eruptive history of the Tequila volcanic field (1600 km2) in the western Trans-Mexican Volcanic Belt is based on 40Ar/39Ar chronology and volume estimates for eruptive units younger than 1 Ma.
40Ar/39Ar chronostratigraphy of Altiplano-Puna volcanic complex ignimbrites reveals the development of a major magmatic province
The Lipez region of southwest Bolivia is the locus of a major Neogene ignimbrite flare-up, and yet it is the least studied portion of the Altiplano-Puna volcanic complex of the Central Andes. Recent
Uturuncu volcano, Bolivia: Volcanic unrest due to mid-crustal magma intrusion
Uturuncu volcano, SW Bolivia, is a dormant stratovolcano (∼85 km3) dominated by dacitic lava domes and flows. 39Ar/40Ar ages show that the volcano was active between 890 ka and 271 ka, with the lavas
Volcanism and erosion during the past 930 k.y. at the Tatara–San Pedro complex, Chilean Andes
Geologic mapping, together with 73 new K-Ar and 40Ar/39Ar age determinations of 45 samples from 17 different volcanic units, plus paleomagnetic orientations, geochemical compositions, and terrestrial
Kizimen volcano, Kamchatka — A future Mount St. Helens?
Abstract We studied the tectonic setting, morphology, geologic structure, history of eruptive activity and evolution of the composition of the erupted material of Kizimen volcano, Kamchatka, from the
A Temporal Record of Magma Accumulation and Evolution beneath Nevado de Toluca, Mexico, Preserved in Plagioclase Phenocrysts
Plagioclase crystals from the 8 km 10 5 ka Upper Toluca Pumice (UTP) eruption from Nevado deToluca provide a detailed temporal record of pre-eruptive magmatic processes. The crystals display a range
Effusive silicic volcanism in the Central Andes: The Chao dacite and other young lavas of the Altiplano‐Puna Volcanic Complex
The largest known Quaternary silicic lava body in the world is Cerro Chao in north Chile, a 14-km-long coulee with a volume of at least 26 km3. It is the largest of a group of several closely similar
...
1
2
3
4
5
...