Magma reservoirs play a key role in controlling numerous processes in planetary evolution,
including igneous differentiation and degassing, crustal construction, and volcanism. For …

Oxygen is the most abundant element in the Earth's crust, mantle, and fluids and therefore its
isotopic composition provides robust constraints on magma genesis. Application of oxygen …

Concordant U–Pb zircon dates have been interpreted traditionally to date the crystallization
ages of plutons because until recently analytical uncertainties have generally been large …

Compositional data for> 400 pumice clasts, organized according to eruptive sequence,
crystal content, and texture, provide new perspectives on eruption and pre-eruptive …

As the internal precision of radiometric dates approaches the 0.1% level, systematic biases
between different methods have become apparent. Many workers have suggested that …

The most voluminous silicic volcanic eruptions in the geological past were associated with
caldera collapses above giant silicic magma reservoirs. The thermal evolution of these sub …

More than 5000 km 3 of nearly compositionally homogeneous crystal-rich dacite (∼ 68 wt%
SiO 2:∼ 45% Pl+ Kfs+ Qtz+ Hbl+ Bt+ Spn+ Mag+ Ilm+ Ap+ Zrn+ Po) erupted from the Fish …

Recent advances in U–Pb geochronology allow unprecedented levels of precision in the
determination of geological ages. However, increased precision has also illuminated the …

Abstract Zircon from the Bishop Tuff (eastern California) was dated by the U-Pb isotope
dilution thermal ionization mass spectrometry (ID-TIMS) method to evaluate time scales of …

The advent of polarized light microscopy in the middle of the 19th century allowed
mineralogists and petrologists interested in igneous rocks to recognize the widespread …