All Outputs (32)

Rapid open system assembly of a large silicic magma body: time-resolved evidence from cored plagioclase crystals in the Oruanui eruption deposits, New Zealand (2008)
Journal Article
Charlier, B., Wilson, C., & Davidson, J. (2008). Rapid open system assembly of a large silicic magma body: time-resolved evidence from cored plagioclase crystals in the Oruanui eruption deposits, New Zealand. Contributions to Mineralogy and Petrology, 156(6), 799-813. https://doi.org/10.1007/s00410-008-0316-y

Rhyolitic pumices in the 26.5 ka Oruanui eruption (Taupo volcano, New Zealand) contain an average of 10 wt% crystals. About 2 wt% of the crystal population is feldspar crystals that display bluish–grey cloudy cores, the colour being imparted by exsol... Read More about Rapid open system assembly of a large silicic magma body: time-resolved evidence from cored plagioclase crystals in the Oruanui eruption deposits, New Zealand.

Untangling differentiation in arc lavas: constraints from unusual minor and trace element variations at Salak Volcano, Indonesia (2008)
Journal Article
Handley, H., Davidson, J., Macpherson, C., & Stimac, J. (2008). Untangling differentiation in arc lavas: constraints from unusual minor and trace element variations at Salak Volcano, Indonesia. Chemical Geology, 255(3-4), 360-376. https://doi.org/10.1016/j.chemgeo.2008.07.007

Volcanic rocks from Salak Volcano in West Java display intriguing minor and trace element geochemical variations with silica. TiO2 and P2O5 contents, Y, HFSE and REE concentrations are abnormally rich in the Central Vent Group (CVG) lavas (e.g. Y = 3... Read More about Untangling differentiation in arc lavas: constraints from unusual minor and trace element variations at Salak Volcano, Indonesia.

Bang! Month-scale eruption triggering at Santorini Volcano (2008)
Journal Article
Martin, V., Morgan, D., Jerram, D., Caddick, M., Prior, D., & Davidson, J. (2008). Bang! Month-scale eruption triggering at Santorini Volcano. Science, 321(5893), https://doi.org/10.1126/science.1159584

The time lag between intrusion of fresh, hot magma and an ensuing eruption is of critical importance in both understanding the triggering and mitigating the consequences of volcanic eruptions. This work looks at material erupted during 1925-28 at the... Read More about Bang! Month-scale eruption triggering at Santorini Volcano.

Sr and Pb isotope micro-analysis in plagioclase crystals from Skye lavas: An insight into open-system processes in a flood basalt province (2008)
Journal Article
Font, L., Davidson, J., Pearson, D., Nowell, G., Jerram, D., & Ottley, C. (2008). Sr and Pb isotope micro-analysis in plagioclase crystals from Skye lavas: An insight into open-system processes in a flood basalt province. Journal of Petrology, 49(8), 1449-1471. https://doi.org/10.1093/petrology/egn032

Crystals in many magmatic rocks are heterogeneous in terms of their isotope composition. Detailed crystal-isotope stratigraphy (CIS) studies have shown that crystals act as reliable recorders of their magma source composition and of the pathways of m... Read More about Sr and Pb isotope micro-analysis in plagioclase crystals from Skye lavas: An insight into open-system processes in a flood basalt province.

Amphibole “sponge” in arc crust? (2007)
Journal Article
Davidson, J., Turner, S., Handley, H., Macpherson, C., & Dosseto, A. (2007). Amphibole “sponge” in arc crust?. Geology, 35(9), 787-790. https://doi.org/10.1130/g23637a.1

Pressure-temperature-time paths followed by arc magmas ascending through the lithosphere dictate the phase assemblage that crystallizes, and hence the compositions of liquid fractionates. Here we use La/Yb and Dy/Yb versus SiO2 relationships from sel... Read More about Amphibole “sponge” in arc crust?.

Microsampling and Isotopic Analysis of Igneous Rocks: Implications for the Study of Magmatic Systems (2007)
Journal Article
Davidson, J., Morgan, D., Charlier, B., Harlou, R., & Hora, J. (2007). Microsampling and Isotopic Analysis of Igneous Rocks: Implications for the Study of Magmatic Systems. Annual Review of Earth and Planetary Sciences, 35, 273-311. https://doi.org/10.1146/annurev.earth.35.031306.140211

Isotopic fingerprinting has long been used to trace magmatic processes and the components that contribute to magmas. Recent technological improvements enable us to measure the isotopic composition of progressively smaller samples. This has provided a... Read More about Microsampling and Isotopic Analysis of Igneous Rocks: Implications for the Study of Magmatic Systems.

Methods for the microsampling and High-precision analysis of strontium and rubidium isotopes at single crystal scale for petrological and geochronological applications. (2006)
Journal Article
Charlier, B., Ginibre, C., Morgan, D., Nowell, G., Pearson, D., Davidson, J., & Ottley, C. (2006). Methods for the microsampling and High-precision analysis of strontium and rubidium isotopes at single crystal scale for petrological and geochronological applications. Chemical Geology, 232, 114-133. https://doi.org/10.1016/j.chemgeo.2006.02.015

Micromilling of single crystals to yield microgram-sized solid samples for subsequent isotopic analysis can yield important petrogenetic information from crystals (especially feldspars) in magmatic rocks. Exceptional detail can be gained because the... Read More about Methods for the microsampling and High-precision analysis of strontium and rubidium isotopes at single crystal scale for petrological and geochronological applications..

Mineral-scale Sr isotope variation in plutonic rocks – a tool for unraveling the evolution of magma systems (2006)
Journal Article
Davidson, J., Font, L., Charlier, B., & Tepley, F. I. (2006). Mineral-scale Sr isotope variation in plutonic rocks – a tool for unraveling the evolution of magma systems. Transactions. Earth sciences, 97(4), 357-367. https://doi.org/10.1017/s0263593300001504

Isotope ratios of elements such as Sr, Nd, Pb and Hf can be used as tracers of magmatic sources and processes. Analytical capabilities have evolved so that isotope ratios can now be analysed in situ, and isotopic tracers can therefore be used within... Read More about Mineral-scale Sr isotope variation in plutonic rocks – a tool for unraveling the evolution of magma systems.

Re-Os isotope studies of Mindanao adakites: Implications for sources of metals and melts (2005)
Journal Article
Dreher, S., Macpherson, C., Pearson, D., & Davidson, J. (2005). Re-Os isotope studies of Mindanao adakites: Implications for sources of metals and melts. Geology, 33(12), 957-960. https://doi.org/10.1130/g21755.1

Whether the downgoing slab in modern subduction zones is able to melt is an important unresolved aspect of plate tectonics. Rare arc lavas with high Sr/Y ratios and low Y and heavy rare earth element concentrations, called adakites, are often attribu... Read More about Re-Os isotope studies of Mindanao adakites: Implications for sources of metals and melts.

Crustal Forensics in Arc Magmas (2005)
Journal Article
Davidson, J., Hora, J., Garrison, J., & Dungan, M. (2005). Crustal Forensics in Arc Magmas. Journal of Volcanology and Geothermal Research, 140(1-3), 157-170. https://doi.org/10.1016/j.jvolgeores.2004.07.019

Abstract The geochemical characteristics of continental crust are present in nearly all arc magmas. These characteristics may reflect a specific source process, such as fluid fluxing, common to both arc magmas and the continental crust, and/or may re... Read More about Crustal Forensics in Arc Magmas.

Mineral-Scale Sr-Isotope Constraints on Magma Evolution and Chamber Dynamics in the Rum Layered Intrusion, Scotland (2003)
Journal Article
Tepley, F., & Davidson, J. (2003). Mineral-Scale Sr-Isotope Constraints on Magma Evolution and Chamber Dynamics in the Rum Layered Intrusion, Scotland. Contributions to Mineralogy and Petrology, 145(5), 628-641. https://doi.org/10.1007/s00410-003-0481-y

Sr isotopic zoning within single plagioclase crystals from rocks from Unit 9 of the Rum layered intrusion is used to infer events during crystal growth in a magma undergoing contamination. The 87Sr/86Sr diversity among minerals and between cores and... Read More about Mineral-Scale Sr-Isotope Constraints on Magma Evolution and Chamber Dynamics in the Rum Layered Intrusion, Scotland.

Insights into Collisional Magmatism from Isotopic Fingerprints of Melting Reactions (2002)
Journal Article
Knesel, K., & Davidson, J. (2002). Insights into Collisional Magmatism from Isotopic Fingerprints of Melting Reactions. Science, 296(5576), 2206-2208. https://doi.org/10.1126/science.1070622

Piston-cylinder experiments in the granite system demonstrate that a wide variety of isotopically distinct melts can arise from progressive melting of a single source. The relation between the isotopic composition of Sr and the stoichiometry, of the... Read More about Insights into Collisional Magmatism from Isotopic Fingerprints of Melting Reactions.