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Variable water input controls evolution of the Lesser Antilles volcanic arc (2020)
Journal Article
Cooper, G. F., Macpherson, C. G., Blundy, J. D., Maunder, B., Allen, R. W., Goes, S., …team, T. V. (2020). Variable water input controls evolution of the Lesser Antilles volcanic arc. Nature, 582, 525-529. https://doi.org/10.1038/s41586-020-2407-5

Oceanic lithosphere carries volatiles, notably water, into the mantle through subduction at convergent plate boundaries. This subducted water exercises control on the production of magma, earthquakes, formation of continental crust and mineral resour... Read More about Variable water input controls evolution of the Lesser Antilles volcanic arc.

Wide‐Angle Seismic Imaging of Two Modes of Crustal Accretion in Mature Atlantic Ocean Crust (2020)
Journal Article
Davy, R., Collier, J., Henstock, T., Rietbrock, A., Goes, S., Blundy, J., …Labahn, E. (2020). Wide‐Angle Seismic Imaging of Two Modes of Crustal Accretion in Mature Atlantic Ocean Crust. Journal of Geophysical Research. Solid Earth, 125(6), Article e2019JB019100. https://doi.org/10.1029/2019jb019100

We present a high‐resolution 2‐D P‐wave velocity model from a 225‐km‐long active seismic profile, collected over ~60–75 Ma central Atlantic crust. The profile crosses five ridge segments separated by a transform and three nontransform offsets. All ri... Read More about Wide‐Angle Seismic Imaging of Two Modes of Crustal Accretion in Mature Atlantic Ocean Crust.

Along arc heterogeneity in local seismicity across the Lesser Antilles subduction zone from a dense ocean-bottom seismometer network (2019)
Journal Article
Bie, L., Rietbrock, A., Hicks, S., Allen, R., Blundy, J., Clouard, V., …Wilson, M. (2020). Along arc heterogeneity in local seismicity across the Lesser Antilles subduction zone from a dense ocean-bottom seismometer network. Seismological Research Letters, 9(1), 237-247. https://doi.org/10.1785/0220190147

The Lesser Antilles arc is only one of two subduction zones where slow‐spreading Atlantic lithosphere is consumed. Slow‐spreading may result in the Atlantic lithosphere being more pervasively and heterogeneously hydrated than fast‐spreading Pacific l... Read More about Along arc heterogeneity in local seismicity across the Lesser Antilles subduction zone from a dense ocean-bottom seismometer network.

Contrasting TiO2 compositions in early cenozoic mafic sills of the Faroe Islands : an example of basalt formation from distinct melting regimes (2019)
Journal Article
Hansen, J., Davidson, J., Jerram, D., Ottley, C., & Widdowson, M. (2019). Contrasting TiO2 compositions in early cenozoic mafic sills of the Faroe Islands : an example of basalt formation from distinct melting regimes. Earth sciences (New York, N.Y. Print), 8(5), 235-267. https://doi.org/10.11648/j.earth.20190805.11

The Paleocene lava succession of the Faroe Islands Basalt Group (FIBG), which is a part of the North Atlantic Igneous Province (NAIP), is intruded by numerous basaltic sills. These can be grouped into three main categories according to their geochemi... Read More about Contrasting TiO2 compositions in early cenozoic mafic sills of the Faroe Islands : an example of basalt formation from distinct melting regimes.

Lower Crustal Heterogeneity and Fractional Crystallization Control Evolution of Small-volume Magma Batches at Ocean Island Volcanoes (Ascension Island, South Atlantic) (2019)
Journal Article
Chamberlain, K., Barclay, J., Preece, K., Brown, R., & Davidson, J. (2019). Lower Crustal Heterogeneity and Fractional Crystallization Control Evolution of Small-volume Magma Batches at Ocean Island Volcanoes (Ascension Island, South Atlantic). Journal of Petrology, 60(8), 1489-1522. https://doi.org/10.1093/petrology/egz037

Ocean island volcanoes erupt a wide range of magmatic compositions via a diverse range of eruptive styles. Understanding where and how these melts evolve is thus an essential component in the anticipation of future volcanic activity. Here we examine... Read More about Lower Crustal Heterogeneity and Fractional Crystallization Control Evolution of Small-volume Magma Batches at Ocean Island Volcanoes (Ascension Island, South Atlantic).

Sr isotope zoning in plagioclase from Parinacota Volcano (Northern Chile): quantifying magma mixing and crustal contamination (2014)
Journal Article
Ginibre, C., & Davidson, J. (2014). Sr isotope zoning in plagioclase from Parinacota Volcano (Northern Chile): quantifying magma mixing and crustal contamination. Journal of Petrology, 55(6), 1203-1238. https://doi.org/10.1093/petrology/egu023

We present analyses of Sr isotope zoning by microdrilling and thermal ionization mass spectrometry in plagioclase crystals from Parinacota volcano (Central Volcanic Zone, northern Chile), which were analysed for major and minor element zoning in a pr... Read More about Sr isotope zoning in plagioclase from Parinacota Volcano (Northern Chile): quantifying magma mixing and crustal contamination.

Assimilation of sediments embedded in the oceanic arc crust: myth or reality? (2014)
Journal Article
Bezard, R., Davidson, J., Turner, S., Macpherson, C., Lindsay, J., & Boyce, A. (2014). Assimilation of sediments embedded in the oceanic arc crust: myth or reality?. Earth and Planetary Science Letters, 395, 51-60. https://doi.org/10.1016/j.epsl.2014.03.038

Arc magmas are commonly assumed to form by melting of sub-arc mantle that has been variably enriched by a component from the subducted slab. Although most magmas that reach the surface are not primitive, the impact of assimilation of the arc crust is... Read More about Assimilation of sediments embedded in the oceanic arc crust: myth or reality?.

Experimental simulation of magma–carbonate interaction beneath Mt. Vesuvius, Italy (2013)
Journal Article
Jolis, E., Freda, C., Troll, V., Deegan, F., Blythe, L., McLeod, C., & Davidson, J. (2013). Experimental simulation of magma–carbonate interaction beneath Mt. Vesuvius, Italy. Contributions to Mineralogy and Petrology, 166(5), 1335-1353. https://doi.org/10.1007/s00410-013-0931-0

We simulated the process of magma–carbonate interaction beneath Mt. Vesuvius in short duration piston-cylinder experiments under controlled magmatic conditions (from 0 to 300 s at 0.5 GPa and 1,200 °C), using a Vesuvius shoshonite composition and upp... Read More about Experimental simulation of magma–carbonate interaction beneath Mt. Vesuvius, Italy.

Dy/Dy*: Variations Arising from Mantle Sources and Petrogenetic Processes (2013)
Journal Article
Davidson, J., Turner, S., & Plank, T. (2013). Dy/Dy*: Variations Arising from Mantle Sources and Petrogenetic Processes. Journal of Petrology, 54(3), 525-537. https://doi.org/10.1093/petrology/egs076

Dy/Dy* is the measured value of Dy, a representative middle rare earth element (REE), compared with the value interpolated between La and Yb on a REE plot. It is essentially a measure of the ‘concavity’ of a REE pattern. The use of Dy/Dy* as a proxy... Read More about Dy/Dy*: Variations Arising from Mantle Sources and Petrogenetic Processes.

Characterizing the continental basement of the Central Andes: Constraints from Bolivian crustal xenoliths (2013)
Journal Article
McLeod, C., Davidson, J., Nowell, G., de Silva, S., & Schmitt, A. (2013). Characterizing the continental basement of the Central Andes: Constraints from Bolivian crustal xenoliths. GSA Bulletin, 125(5-6), 985-997. https://doi.org/10.1130/b30721.1

A critical factor in understanding the development of active continental margins is knowledge of the crustal basement on which magmatic arcs are built. This study reports results from a whole-rock geochemical and zircon U-Pb geochronological study of... Read More about Characterizing the continental basement of the Central Andes: Constraints from Bolivian crustal xenoliths.

Disequilibrium melting during crustal anatexis and implications for modeling open magmatic systems (2012)
Journal Article
McLeod, C., Davidson, J., Nowell, G., & de Silva, S. (2012). Disequilibrium melting during crustal anatexis and implications for modeling open magmatic systems. Geology, 40(5), 435-438. https://doi.org/10.1130/g33000.1

Contamination of ascending mantle-derived magmas by the continental crust was investigated and modeled for a suite of volcanic rocks and entrained crustal xenoliths from the Central Andes using bulk geochemical compositions for mantle-derived and cru... Read More about Disequilibrium melting during crustal anatexis and implications for modeling open magmatic systems.

Geochemistry and Petrology of the Most Recent Deposits from Cotopaxi Volcano, Northern Volcanic Zone, Ecuador (2011)
Journal Article
Garrison, J., Davidson, J., Hall, M., & Mothes, P. (2011). Geochemistry and Petrology of the Most Recent Deposits from Cotopaxi Volcano, Northern Volcanic Zone, Ecuador. Journal of Petrology, 52(9), 1641-1678. https://doi.org/10.1093/petrology/egr023

Cotopaxi volcano is located in the Northern Volcanic Zone of the South American Andes. Pyroclastic deposits and lava flows from Cotopaxi comprise basaltic andesites, andesites and rhyolites that have erupted since 13 200 years BP. Nine rhyolite erupt... Read More about Geochemistry and Petrology of the Most Recent Deposits from Cotopaxi Volcano, Northern Volcanic Zone, Ecuador.

Differentiation and source processes at Mt Pelee and the Quill; active volcanoes in the Lesser Antilles Arc (2011)
Journal Article
Davidson, J., & Wilson, B. (2011). Differentiation and source processes at Mt Pelee and the Quill; active volcanoes in the Lesser Antilles Arc. Journal of Petrology, 52(7-8), 1493-1531. https://doi.org/10.1093/petrology/egq095

Volcanic rocks erupted at Mt Pelée (Martinique; central Lesser Antilles) and the Quill volcano (Statia; northern Lesser Antilles) define distinct differentiation trends, each of which can be accounted for largely by fractional crystallization of plag... Read More about Differentiation and source processes at Mt Pelee and the Quill; active volcanoes in the Lesser Antilles Arc.

Crystal recycling in the steady-state system of the active Stromboli volcano: a 2.5-ka story inferred from in situ Sr-isotope and trace element data (2011)
Journal Article
Francalanci, L., Avanzinelli, R., Nardini, I., Tiepolo, M., Davidson, J. P., & Vannucci, R. (2011). Crystal recycling in the steady-state system of the active Stromboli volcano: a 2.5-ka story inferred from in situ Sr-isotope and trace element data. Contributions to Mineralogy and Petrology, 163(1), 109-131. https://doi.org/10.1007/s00410-011-0661-0

In situ Sr-isotope data by microdrilling, cou- pled with major and trace element analyses, have been performed on plagioclase and clinopyroxene from seven samples collected during the 2002–2003 eruptive crisis at Stromboli volcano (Aeolian Islands, I... Read More about Crystal recycling in the steady-state system of the active Stromboli volcano: a 2.5-ka story inferred from in situ Sr-isotope and trace element data.

Hf-Nd isotope and trace element constraints on subduction inputs at island arcs: limitations of Hf anomalies as sediment input indicators (2011)
Journal Article
Handley, H., Turner, S., Macpherson, C., Gertisser, R., & Davidson, J. (2011). Hf-Nd isotope and trace element constraints on subduction inputs at island arcs: limitations of Hf anomalies as sediment input indicators. Earth and Planetary Science Letters, 304(1-2), 212-223. https://doi.org/10.1016/j.epsl.2011.01.034

New Nd–Hf isotope and trace element data for Javanese volcanoes are combined with recently published data to place constraints on subduction inputs at the Sunda arc in Indonesia and assess the value of Hf anomalies (expressed as Hf/Hf* and Sm/Hf rati... Read More about Hf-Nd isotope and trace element constraints on subduction inputs at island arcs: limitations of Hf anomalies as sediment input indicators.

From source to crust: Tracing magmatic evolution in a kimberlite and a melilitite using microsample geochemistry. (2010)
Journal Article
Malarkey, J., Pearson, D., Kjarsgaard, B., Davidson, J., Nowell, G., Ottley, C., & Stammer, J. (2010). From source to crust: Tracing magmatic evolution in a kimberlite and a melilitite using microsample geochemistry. Earth and Planetary Science Letters, 299(1-2), 80-90. https://doi.org/10.1016/j.epsl.2010.08.020

We present an integrated microsampling trace element and isotopic study of primary minerals within the Jos kimberlite, Canada, in order to observe how different phases record progressive crustal interaction in the evolving kimberlite. Identification... Read More about From source to crust: Tracing magmatic evolution in a kimberlite and a melilitite using microsample geochemistry..

Geochemical and Sr-O isotopic constraints on magmatic differentiation at Gede volcanic complex, west Java, Indonesia (2010)
Journal Article
Handley, H., Macpherson, C., & Davidson, J. (2010). Geochemical and Sr-O isotopic constraints on magmatic differentiation at Gede volcanic complex, west Java, Indonesia. Contributions to Mineralogy and Petrology, 159(6), 885-908. https://doi.org/10.1007/s00410-009-0460-z

The Gede Volcanic Complex (GVC) of the Sunda island arc (West Java, Indonesia) consists of multiple volcanic centres and eruptive groups with complex magmatic histories. We present new petrological, mineralogical, whole-rock major and trace element a... Read More about Geochemical and Sr-O isotopic constraints on magmatic differentiation at Gede volcanic complex, west Java, Indonesia.

Magma–Carbonate Interaction Processes and Associated CO2 Release at Merapi Volcano, Indonesia: Insights from Experimental Petrology (2010)
Journal Article
Deegan, F., Troll, V., Freda, C., Misiti, V., Chadwick, J., McLeod, C., & Davidson, J. (2010). Magma–Carbonate Interaction Processes and Associated CO2 Release at Merapi Volcano, Indonesia: Insights from Experimental Petrology. Journal of Petrology, 51(5), 1027-1051. https://doi.org/10.1093/petrology/egq010

There is considerable evidence for ongoing, late-stage interaction between the magmatic system at Merapi volcano, Indonesia, and local crustal carbonate (limestone). Calc-silicate xenoliths within Merapi basaltic-andesite eruptives display textures i... Read More about Magma–Carbonate Interaction Processes and Associated CO2 Release at Merapi Volcano, Indonesia: Insights from Experimental Petrology.