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Polybaric melting of a single mantle source during the Neogene Siverek phase of the Karacadağ Volcanic Complex, SE Turkey (2012)
Journal Article
Ekici, T., Macpherson, C., & Otlu, N. (2012). Polybaric melting of a single mantle source during the Neogene Siverek phase of the Karacadağ Volcanic Complex, SE Turkey. Lithos, 146-147, 152-163. https://doi.org/10.1016/j.lithos.2012.05.004

Siverek plateau basalts represent the Neogene activity of the Karacadağ Volcanic Complex in southeast Turkey and can be divided into two groups based on incompatible element concentrations. Group 1 is largely basaltic, containing some alkali basalts,... Read More about Polybaric melting of a single mantle source during the Neogene Siverek phase of the Karacadağ Volcanic Complex, SE Turkey.

Long-term preservation of slab signatures in the mantle inferred from hydrogen isotopes (2012)
Journal Article
Shaw, A., Hauri, E., Behn, M., Hilton, D., Macpherson, C., & Sinton, J. (2012). Long-term preservation of slab signatures in the mantle inferred from hydrogen isotopes. Nature Geoscience, 5(3), 224-228. https://doi.org/10.1038/ngeo1406

Seismic tomographic images indicate that subducted lithosphere is transported into the deep mantle. Petrologic modelling shows that water contained in subducted slabs can be carried to depths of at least 200 km (ref. 2); however, whether the hydrated... Read More about Long-term preservation of slab signatures in the mantle inferred from hydrogen isotopes.

Evolution of the East Philippine Arc: Experimental constraints on magmatic phase relations and adakitic melt formation (2011)
Journal Article
Coldwell, B., Adam, J., Rushmer, T., & Macpherson, C. (2011). Evolution of the East Philippine Arc: Experimental constraints on magmatic phase relations and adakitic melt formation. Contributions to Mineralogy and Petrology, 162(4), 835-848. https://doi.org/10.1007/s00410-011-0627-2

Piston-cylinder experiments on a Pleistocene adakite from Mindanao in the Philippines have been used to establish near-liquidus and sub-liquidus phase relationships relevant to conditions in the East Philippines subduction zone. The experimental star... Read More about Evolution of the East Philippine Arc: Experimental constraints on magmatic phase relations and adakitic melt formation.

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.

No slab-derived CO₂ in Mariana Trough back-arc basalts: Implications for carbon subduction and for temporary storage of CO₂ beneath slow spreading ridges (2010)
Journal Article
Macpherson, C., Hilton, D., & Hammerschmidt, K. (2010). No slab-derived CO₂ in Mariana Trough back-arc basalts: Implications for carbon subduction and for temporary storage of CO₂ beneath slow spreading ridges. Geochemistry, Geophysics, Geosystems, 11(11), Article Q11007. https://doi.org/10.1029/2010gc003293

[1] The Southern Mariana Trough is particularly well suited to study mass balance in subduction zones because the flux of material recycled from the subducted slab has been shown to diminish to negligible levels in the southernmost part of the area.... Read More about No slab-derived CO₂ in Mariana Trough back-arc basalts: Implications for carbon subduction and for temporary storage of CO₂ beneath slow spreading ridges.

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.

Plio-Pleistocene intra-plate magmatism from the southern Sulu Arc, Semporna peninsula, Sabah, Borneo: Implications for high-Nb basalt in subduction zones (2010)
Journal Article
Macpherson, C., Chiang, K., Hall, R., Nowell, G., Castillo, P., & Thirlwall, M. (2010). Plio-Pleistocene intra-plate magmatism from the southern Sulu Arc, Semporna peninsula, Sabah, Borneo: Implications for high-Nb basalt in subduction zones. Journal of Volcanology and Geothermal Research, 190(1-2), 25-38. https://doi.org/10.1016/j.jvolgeores.2009.11.004

New analyses of major and trace element concentrations and Sr, Nd and Pb isotopic ratios are presented for Plio-Pleistocene basalts and basaltic andesites from the Semporna peninsula in Sabah, Borneo, at the southern end of the Sulu Arc. Depletion of... Read More about Plio-Pleistocene intra-plate magmatism from the southern Sulu Arc, Semporna peninsula, Sabah, Borneo: Implications for high-Nb basalt in subduction zones.

Pyroxenite-rich mantle formed by recycled oceanic lithosphere: Oxygen-osmium isotope evidence from Canary Island lavas (2009)
Journal Article
Day, J., Pearson, D., Macpherson, C., Lowry, D., & Carracedo, J. (2009). Pyroxenite-rich mantle formed by recycled oceanic lithosphere: Oxygen-osmium isotope evidence from Canary Island lavas. Geology, 37(6), 555-558. https://doi.org/10.1130/g25613a.1

Plate tectonic processes result in recycling of crust and lithosphere into Earth's mantle. Evidence for long-term preservation of recycled reservoirs in the mantle comes from the enriched isotopic character of oceanic island basalt (OIB) lavas. Altho... Read More about Pyroxenite-rich mantle formed by recycled oceanic lithosphere: Oxygen-osmium isotope evidence from Canary Island lavas.

Community diversity at Ban Lum Khao, Thailand: Isotopic evidence from the skeletons (2009)
Journal Article
Bentley, R., Cox, K., Tayles, N., Higham, C., Macpherson, C., Nowell, G., …Hayes, T. (2009). Community diversity at Ban Lum Khao, Thailand: Isotopic evidence from the skeletons. Asian Perspectives: The Journal of Archaeology for Asia and the Pacific, 48(1), 79-97. https://doi.org/10.1353/asi.0.0017

Isotopes of strontium, carbon, and oxygen were analyzed in human tooth enamel from the Bronze Age site of Ban Lum Khao (c. 1400 B.C.–500 B.C.) in Thailand. The strontium and oxygen isotopes, which generally reflect place of origin, delimit discrete g... Read More about Community diversity at Ban Lum Khao, Thailand: Isotopic evidence from the skeletons.

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.

Lithosphere erosion and crustal growth in subduction zones: Insights from initiation of the nascent East Philippine Arc (2008)
Journal Article
Macpherson, C. (2008). Lithosphere erosion and crustal growth in subduction zones: Insights from initiation of the nascent East Philippine Arc. Geology, 36(4), 311-314. https://doi.org/10.1130/g24412a.1

The Philippine Trench marks a nascent plate margin where subduction initiation is propagating from north to south. Magma compositions in the East Philippine Arc record thinning of arc lithosphere as it is eroded from below. Lithosphere is thicker ben... Read More about Lithosphere erosion and crustal growth in subduction zones: Insights from initiation of the nascent East Philippine Arc.

LAPITA MIGRANTS IN THE PACIFIC’S OLDEST CEMETERY:ISOTOPIC ANALYSIS AT TEOUMA, VANUATU (2007)
Journal Article
Alexander Bentley, R., Buckley, H. R., Spriggs, M., Bedford, S., Ottley, C. J., Nowell, G. M., …Graham Pearson, D. (2007). LAPITA MIGRANTS IN THE PACIFIC’S OLDEST CEMETERY:ISOTOPIC ANALYSIS AT TEOUMA, VANUATU. American Antiquity, 72, 645-656

Teouma, an archaeological site on Efate Island, Vanuatu, features the earliest cemetery yet discovered of the colonizers of Remote Oceania, from the late second millennium B.C. In order to investigate potential migration of seventeen human individual... Read More about LAPITA MIGRANTS IN THE PACIFIC’S OLDEST CEMETERY:ISOTOPIC ANALYSIS AT TEOUMA, VANUATU.

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?.

Constraining fluid and sediment contributions to subduction-related magmatism in Indonesia: Ijen Volcanic Complex (2007)
Journal Article
Handley, H., Macpherson, C., Davidson, J., Berlo, K., & Lowry, D. (2007). Constraining fluid and sediment contributions to subduction-related magmatism in Indonesia: Ijen Volcanic Complex. Journal of Petrology, 48(6), 1155-1183. https://doi.org/10.1093/petrology/egm013

Ijen Volcanic Complex (IVC) in East Java, Indonesia is situated on thickened oceanic crust within the Quaternary volcanic front of the Sunda arc. The 20 km wide calderas complex contains around 22 post-caldera eruptive centres, positioned either arou... Read More about Constraining fluid and sediment contributions to subduction-related magmatism in Indonesia: Ijen Volcanic Complex.

Shifting gender relations at Khok Phanom Di, Thailand: Isotopic evidence from the skeletons (2007)
Journal Article
Bentley, R., Tayles, N., Higham, C., Macpherson, C., & Atkinson, T. (2007). Shifting gender relations at Khok Phanom Di, Thailand: Isotopic evidence from the skeletons. Current Anthropology, 48(2), 301-314. https://doi.org/10.1086/512987

The values for isotopes of strontium, carbon, and oxygen in human tooth enamel from the prehistoric site of Khok Phanom Di (ca. 2100–1500 BC) in Thailand shed light on human mobility and marital residence during a crucial period of subsistence change... Read More about Shifting gender relations at Khok Phanom Di, Thailand: Isotopic evidence from the skeletons.

Adakites without slab melting: high pressure differentiation of island arc magma, Mindanao, the Philippines (2006)
Journal Article
Macpherson, C., Dreher, S., & Thirlwall, M. (2006). Adakites without slab melting: high pressure differentiation of island arc magma, Mindanao, the Philippines. Earth and Planetary Science Letters, 243(3-4), 581-593. https://doi.org/10.1016/j.epsl.2005.12.034

New geochemical data for Pleistocene magmatic rocks from the Surigao peninsula, eastern Mindanao, the Philippines, demonstrate typical adakitic traits, including elevation of Sr / Y and depletion of the heavy rare earth elements. 87Sr / 86Sr and 143N... Read More about Adakites without slab melting: high pressure differentiation of island arc magma, Mindanao, the Philippines.