Adakite petrogenesis

PR Castillo - Lithos, 2012 - Elsevier
Adakite was originally proposed as a genetic term to define intermediate to high-silica, high
Sr/Y and La/Yb volcanic and plutonic rocks derived from melting of the basaltic portion of …

Stability and chemical equilibrium of amphibole in calc-alkaline magmas: an overview, new thermobarometric formulations and application to subduction-related …

F Ridolfi, A Renzulli, M Puerini - Contributions to mineralogy and petrology, 2010 - Springer
This work focuses on a rigorous analysis of the physical–chemical, compositional and
textural relationships of amphibole stability and the development of new thermobarometric …

Experimentally derived intermediate to silica-rich arc magmas by fractional and equilibrium crystallization at 1· 0 GPa: an evaluation of phase relationships …

P Ulmer, R Kaegi, O Müntener - Journal of Petrology, 2018 - academic.oup.com
Differentiation of hydrous primary, mantle-derived magmas is a fundamental process to
generate evolved intermediate to SiO2-rich compositions forming the bulk of the continental …

Why do mafic arc magmas contain∼ 4 wt% water on average?

T Plank, KA Kelley, MM Zimmer, EH Hauri… - Earth and Planetary …, 2013 - Elsevier
The last 15yr have seen an explosion of data on the volatile contents of magmas parental to
arc volcanoes. This has occurred due to the intense study of melt inclusions trapped in …

Identification, classification, and interpretation of boninites from Anthropocene to Eoarchean using Si-Mg-Ti systematics

JA Pearce, MK Reagan - Geosphere, 2019 - pubs.geoscienceworld.org
Boninites are rare, high-Si, high-Mg, low-Ti lavas that have considerable tectonic
significance, especially for recognizing and interpreting episodes of subduction initiation in …

Oxygen fugacity across tectonic settings

E Cottrell, SK Birner, M Brounce… - Magma redox …, 2021 - Wiley Online Library
Experiment and observation have established the centrality of oxygen fugacity (f O 2) to
determining the course of igneous differentiation, and so the development and application of …

Simple mixing as the major control of the evolution of volcanic suites in the Ecuadorian Andes

P Schiano, M Monzier, JP Eissen, H Martin… - … to Mineralogy and …, 2010 - Springer
Examination of an extensive major and trace element database for about 700 whole rocks
from the Ecuadorian Andes reveals series of local trends typified by three volcanoes: Iliniza …

Rapid reequilibration of H2O and oxygen fugacity in olivine-hosted melt inclusions

GA Gaetani, JA O'Leary, N Shimizu… - …, 2012 - pubs.geoscienceworld.org
The solubility of H2O in silicate melt drops substantially with decreasing pressure, so that a
magma initially containing several weight percent H2O in a crustal magma reservoir is left …

High-magnesian andesite from Mount Shasta: a product of magma mixing and contamination, not a primitive mantle melt

MJ Streck, WP Leeman, J Chesley - Geology, 2007 - pubs.geoscienceworld.org
It has been proposed that high-Mg andesites (HMAs) from the Mount Shasta area may
represent near-primary mantle melts, carrying signatures of slab melt interaction with the …

The role of water in generating the calc-alkaline trend: new volatile data for Aleutian magmas and a new tholeiitic index

MM Zimmer, T Plank, EH Hauri… - Journal of …, 2010 - academic.oup.com
The origin of tholeiitic (TH) versus calc-alkaline (CA) magmatic trends has long been
debated. Part of the problem stems from the lack of a quantitative measure for the way in …