Formation of iron oxide–apatite deposits

M Reich, AC Simon, F Barra, G Palma, T Hou… - Nature Reviews Earth & …, 2022 - nature.com
Renewed economic interest in iron oxide–apatite (IOA) deposits—containing tens to
hundreds of millions of tonnes of Fe and substantial amounts of rare earth elements, P, Co …

Bubble formation in magma

JE Gardner, FB Wadsworth, TL Carley… - Annual Review of …, 2023 - annualreviews.org
Volcanic eruptions are driven by bubbles that form when volatile species exsolve from
magma. The conditions under which bubbles form depend mainly on magma composition …

Trace elements in magnetite from massive iron oxide-apatite deposits indicate a combined formation by igneous and magmatic-hydrothermal processes

JL Knipping, LD Bilenker, AC Simon, M Reich… - … et Cosmochimica Acta, 2015 - Elsevier
Iron oxide-apatite (IOA) deposits are an important source of iron and other elements (eg,
REE, P, U, Ag and Co) vital to modern society. However, their formation, including the …

Textural studies of vesicles in volcanic rocks: an integrated methodology

T Shea, BF Houghton, L Gurioli, KV Cashman… - Journal of Volcanology …, 2010 - Elsevier
Vesicles in volcanic rocks are frozen records of degassing processes in magmas. For this
reason, their sizes, spatial arrangements, numbers and shapes can be linked to physical …

Bubble nucleation in magmas: a dominantly heterogeneous process?

T Shea - Journal of Volcanology and Geothermal Research, 2017 - Elsevier
Bubble nucleation is at the heart of magma ascent and degassing. Nucleation kinetics
control how easily a magma exsolves its volatiles, and thereby its explosivity close to the …

Can nanolites enhance eruption explosivity?

F Cáceres, FB Wadsworth, B Scheu… - …, 2020 - pubs.geoscienceworld.org
Degassing dynamics play a crucial role in controlling the explosivity of magma at erupting
volcanoes. Degassing of magmatic water typically involves bubble nucleation and growth …

Reconciling bubble nucleation in explosive eruptions with geospeedometers

S Hajimirza, HM Gonnermann, JE Gardner - Nature communications, 2021 - nature.com
Magma from Plinian volcanic eruptions contains an extraordinarily large numbers of
bubbles. Nucleation of those bubbles occurs because pressure decreases as magma rises …

Bubble nucleation, growth and coalescence during the 1997 Vulcanian explosions of Soufrière Hills Volcano, Montserrat

T Giachetti, TH Druitt, A Burgisser, L Arbaret… - Journal of Volcanology …, 2010 - Elsevier
Soufrière Hills Volcano had two periods of repetitive Vulcanian activity in 1997. Each
explosion discharged the contents of the upper 0.5–2km of the conduit as pyroclastic flows …

Oxide nanolitisation-induced melt iron extraction causes viscosity jumps and enhanced explosivity in silicic magma

F Cáceres, KU Hess, M Eitel, M Döblinger… - Nature …, 2024 - nature.com
Explosivity in erupting volcanoes is controlled by the degassing dynamics and the viscosity
of the ascending magma in the conduit. Magma crystallisation enhances both …

Volatiles in subduction zone magmatism

GF Zellmer, M Edmonds, SM Straub - Geological Society, London …, 2015 - lyellcollection.org
The volatile cycle at subduction zones is key to the petrogenesis, transport, storage and
eruption of arc magmas. Volatiles control the flux of slab components into the mantle wedge …