Professor Julie Prytulak's Outputs (68)

Rhenium isotope variations in Icelandic groundwaters and hydrothermal systems (2024)
Journal Article
Wang, W., Dickson, A. J., Dellinger, M., Burton, K. W., Clark, D. E., Eggertsson, G. H., Einarsdóttir, Í. E., Ingimarsson, H., Mesfin, K. G., Hilton, R. G., & Prytulak, J. (2024). Rhenium isotope variations in Icelandic groundwaters and hydrothermal systems. Earth and Planetary Science Letters, 647, Article 119046. https://doi.org/10.1016/j.epsl.2024.119046

The isotopic composition of rhenium (Re) has potential for use as a proxy to infer changes in seafloor redox and/or global oxidative weathering intensity. Despite an emerging dataset on this nascent isotope system in Earth's surficial environments, v... Read More about Rhenium isotope variations in Icelandic groundwaters and hydrothermal systems.

Rhenium Isotopes Record Oxidative Weathering Intensity in Sedimentary Rocks (2024)
Journal Article
Dickson, A. J., Hilton, R. G., Prytulak, J., Minisini, D., Eldrett, J. S., Dellinger, M., Stow, M., & Wang, W. (2024). Rhenium Isotopes Record Oxidative Weathering Intensity in Sedimentary Rocks. Geochemistry, Geophysics, Geosystems, 25(10), Article e2024GC011795. https://doi.org/10.1029/2024gc011795

Oxidative weathering of organic carbon in sedimentary rocks is a major source of CO2 to the atmosphere over geological timescales, but the size of this emission pathway in Earth's past has not been directly quantified due to a lack of available proxy... Read More about Rhenium Isotopes Record Oxidative Weathering Intensity in Sedimentary Rocks.

Vanadium isotope fractionation during plutonic differentiation and implications for the isotopic composition of the upper continental crust (2024)
Journal Article
Stow, M. A., Prytulak, J., Humphreys, M. C., Hammond, S. J., & Nowell, G. M. (2024). Vanadium isotope fractionation during plutonic differentiation and implications for the isotopic composition of the upper continental crust. Earth and Planetary Science Letters, 643, Article 118825. https://doi.org/10.1016/j.epsl.2024.118825

The analysis of emerging stable isotopic systems in clastic sedimentary rocks is increasingly used to determine the average composition of the upper continental crust through geological time. Any temporal variations can then be linked to global-scale... Read More about Vanadium isotope fractionation during plutonic differentiation and implications for the isotopic composition of the upper continental crust.

Rhenium elemental and isotopic variations at magmatic temperatures (2024)
Journal Article
Wang, W., Dickson, A., Stow, M., Dellinger, M., Burton, K., Savage, P., …Prytulak, J. (2024). Rhenium elemental and isotopic variations at magmatic temperatures. Geochemical perspectives letters, 28, 48-53. https://doi.org/10.7185/geochemlet.2402

Recent analytical advances in the measurement of rhenium (Re) isotope ratios allow its potential as a palaeoredox and chemical weathering proxy to be explored. However, a successful isotopic proxy must be grounded by an understanding of its compositi... Read More about Rhenium elemental and isotopic variations at magmatic temperatures.

No V-Fe-Zn isotopic variation in basalts from the 2021 Fagradalsfjall eruption (2023)
Journal Article
Stow, M., Prytulak, J., Burton, K., Nowell, G., Marshall, E., Halldórsson, S., …Caracciolo, A. (2023). No V-Fe-Zn isotopic variation in basalts from the 2021 Fagradalsfjall eruption. Geochemical perspectives letters, 27, 54-58. https://doi.org/10.7185/geochemlet.2335

The Earth’s mantle is chemically heterogeneous in space and time, which is often reflected by variable isotopic compositions of mantle derived basalts. Basalts from the first 40 days of the 2021 Fagradalsfjall eruption, Reykjanes Peninsula, Iceland,... Read More about No V-Fe-Zn isotopic variation in basalts from the 2021 Fagradalsfjall eruption.

Equilibrium partitioning and isotopic fractionation of nitrogen between biotite, plagioclase, and K-feldspar during magmatic differentiation (2023)
Journal Article
Boocock, T. J., Stüeken, E. E., Bybee, G. M., König, R., Boyce, A. J., Prytulak, J., …Mikhail, S. (2023). Equilibrium partitioning and isotopic fractionation of nitrogen between biotite, plagioclase, and K-feldspar during magmatic differentiation. Geochimica et Cosmochimica Acta, 356, 116-128. https://doi.org/10.1016/j.gca.2023.07.010

A significant portion of the continental crust is composed of plutonic igneous rocks. However, little is known
about the geochemical behaviour of N between the different minerals during magmatic differentiation. To
provide new constraints for the... Read More about Equilibrium partitioning and isotopic fractionation of nitrogen between biotite, plagioclase, and K-feldspar during magmatic differentiation.

A primary magmatic source of nitrogen to Earth’s crust (2023)
Journal Article
Boocock, T. J., Mikhail, S., Boyce, A. J., Prytulak, J., Savage, P. S., & Stüeken, E. E. (2023). A primary magmatic source of nitrogen to Earth’s crust. Nature Geoscience, 16, 521-526. https://doi.org/10.1038/s41561-023-01194-3

The igneous portion of Earth’s continental crust represents a long-term sink of terrestrial nitrogen, but the origin of the nitrogen in this reservoir remains ambiguous. Possible sources include magmatic differentiation of mantle-derived melts (that... Read More about A primary magmatic source of nitrogen to Earth’s crust.

Slab to back-arc to arc: Fluid and melt pathways through the mantle wedge beneath the Lesser Antilles (2023)
Journal Article
Hicks, S. P., Bie, L., Rychert, C. A., Harmon, N., Goes, S., Rietbrock, A., Wei, S. S., Collier, J. S., Henstock, T. J., Lynch, L., Prytulak, J., Macpherson, C. G., Schlaphorst, D., Wilkinson, J. J., Blundy, J. D., Cooper, G. F., Davy, R. G., & Kendall, J.-M. (2023). Slab to back-arc to arc: Fluid and melt pathways through the mantle wedge beneath the Lesser Antilles. Science Advances, 9(5), https://doi.org/10.1126/sciadv.add2143

Volatiles expelled from subducted plates promote melting of the overlying warm mantle, feeding arc volcanism. However, debates continue over the factors controlling melt generation and transport, and how these determine the placement of volcanoes. To... Read More about Slab to back-arc to arc: Fluid and melt pathways through the mantle wedge beneath the Lesser Antilles.

Identifying Tethys oceanic fingerprint in post-collisional potassium-rich lavas in Tibet using thallium isotopes (2022)
Journal Article
Wei, F., Prytulak, J., Baker, E. B., Xu, J., & Zhao, B. (2022). Identifying Tethys oceanic fingerprint in post-collisional potassium-rich lavas in Tibet using thallium isotopes. Chemical Geology, 607, Article 121013. https://doi.org/10.1016/j.chemgeo.2022.121013

Following the Indian-Asian continental collision, the Tibetan Plateau experienced continuous magmatism from south to north, most of which is characterized by high potassium (K) content and negative niobium‑tantalum‑titanium (Nb-Ta-Ti) anomalies. We p... Read More about Identifying Tethys oceanic fingerprint in post-collisional potassium-rich lavas in Tibet using thallium isotopes.

Magma recharge patterns control eruption styles and magnitudes at Popocatépetl volcano (Mexico) (2022)
Journal Article
Mangler, M. F., Petrone, C. M., & Prytulak, J. (2022). Magma recharge patterns control eruption styles and magnitudes at Popocatépetl volcano (Mexico). Geology, 50(3), 366-370. https://doi.org/10.1130/g49365.1

Diffusion chronometry has produced petrological evidence that magma recharge in mafic to intermediate systems can trigger volcanic eruptions within weeks to months. However, less is known about longer-term recharge frequencies and durations priming m... Read More about Magma recharge patterns control eruption styles and magnitudes at Popocatépetl volcano (Mexico).

Integrated Petrological and Fe-Zn Isotopic Modelling of Plutonic Differentiation (2021)
Journal Article
Stow, M. A., Prytulak, J., Humphreys, M. C., & Nowell, G. M. (2022). Integrated Petrological and Fe-Zn Isotopic Modelling of Plutonic Differentiation. Geochimica et Cosmochimica Acta, 320, 366-391. https://doi.org/10.1016/j.gca.2021.12.018

The upper continental crust is formed from chemically diverse granitic plutons. Active debate surrounds the range of physical conditions (P-T-X-fO2) and differentiation processes which occur in mush bodies that solidify to form plutons. Transition me... Read More about Integrated Petrological and Fe-Zn Isotopic Modelling of Plutonic Differentiation.

Thallium Isotopic Compositions in Hawaiian Lavas: Evidence for Recycled Materials on the Kea Side of the Hawaiian Mantle Plume (2021)
Journal Article
Williamson, N. M., Weis, D., & Prytulak, J. (2021). Thallium Isotopic Compositions in Hawaiian Lavas: Evidence for Recycled Materials on the Kea Side of the Hawaiian Mantle Plume. Geochemistry, Geophysics, Geosystems, 22(9), Article e2021GC009765. https://doi.org/10.1029/2021gc009765

Hawaiian volcanoes record 6 Ma of potentially deep mantle chemistry and form two parallel volcanic chains that are geochemically unique, named Loa and Kea. Loa volcanoes erupt lavas with isotopically enriched compositions thought to reflect the prese... Read More about Thallium Isotopic Compositions in Hawaiian Lavas: Evidence for Recycled Materials on the Kea Side of the Hawaiian Mantle Plume.

Isotopic Compositions of Plagioclase From Plutonic Xenoliths Reveal Crustal Assimilation Below Martinique, Lesser Antilles Arc (2021)
Journal Article
Brown, J., Cooper, G., Nowell, G., Macpherson, C., Neill, I., & Prytulak, J. (2021). Isotopic Compositions of Plagioclase From Plutonic Xenoliths Reveal Crustal Assimilation Below Martinique, Lesser Antilles Arc. Frontiers in Earth Science, 9, Article 682583. https://doi.org/10.3389/feart.2021.682583

The chemical and isotopic compositions of volcanic arc lavas often show evidence for involvement of a sedimentary component during magma genesis. Determining where this sedimentary component is added to arc magmas is of vital importance for constrain... Read More about Isotopic Compositions of Plagioclase From Plutonic Xenoliths Reveal Crustal Assimilation Below Martinique, Lesser Antilles Arc.

Nature of the Cuvier Abyssal Plain crust, offshore NW Australia (2021)
Journal Article
Reeve, M. T., Magee, C., Bastow, I. D., McDermott, C., Jackson, C. A.-L., Bell, R. E., & Prytulak, J. (2021). Nature of the Cuvier Abyssal Plain crust, offshore NW Australia. Journal of the Geological Society, 178(5), Article 172. https://doi.org/10.1144/jgs2020-172

Magnetic stripes have long been assumed to be indicative of oceanic crust. However, continental crust heavily intruded by magma can also record magnetic stripes. We re-evaluate the nature of the Cuvier Abyssal Plain (CAP), offshore NW Australia, whic... Read More about Nature of the Cuvier Abyssal Plain crust, offshore NW Australia.

Thallium elemental and isotopic systematics in ocean island lavas (2021)
Journal Article
Brett, E., Prytulak, J., Rehkämper, M., Hammond, S., Chauvel, C., Stracke, A., & Willbold, M. (2021). Thallium elemental and isotopic systematics in ocean island lavas. Geochimica et Cosmochimica Acta, 301, 187-210. https://doi.org/10.1016/j.gca.2021.02.035

The Earth’s mantle exhibits marked chemical heterogeneity. We provide an examination of thallium systematics in ocean island basalts (OIB): new high-precision trace element analyses, including Tl, and Tl isotopic compositions for 48 OIB spanning the... Read More about Thallium elemental and isotopic systematics in ocean island lavas.

Formation mechanisms of macroscopic globules in andesitic glasses from the Izu–Bonin–Mariana forearc (IODP Expedition 352) (2020)
Journal Article
Fonseca, R. O., Michely, L. T., Kirchenbaur, M., Prytulak, J., Ryan, J., Hauke, K., Leitzke, F. P., Almeev, R. R., Marien, C. S., Gerdes, A., & Schellhorn, R. (2021). Formation mechanisms of macroscopic globules in andesitic glasses from the Izu–Bonin–Mariana forearc (IODP Expedition 352). Contributions to Mineralogy and Petrology, 176(1), https://doi.org/10.1007/s00410-020-01756-3

The Izu–Bonin–Mariana volcanic arc is situated at a convergent plate margin where subduction initiation triggered the formation of MORB-like forearc basalts as a result of decompression melting and near-trench spreading. International Ocean Discovery... Read More about Formation mechanisms of macroscopic globules in andesitic glasses from the Izu–Bonin–Mariana forearc (IODP Expedition 352).

A Pyroxenic View on Magma Hybridization and Crystallization at Popocatépetl Volcano, Mexico (2020)
Journal Article
Mangler, M. F., Petrone, C. M., Hill, S., Delgado-Granados, H., & Prytulak, J. (2020). A Pyroxenic View on Magma Hybridization and Crystallization at Popocatépetl Volcano, Mexico. Frontiers in Earth Science, 8, Article 362. https://doi.org/10.3389/feart.2020.00362

The Popocatépetl Volcanic Complex (PVC) is an active arc volcano located in central Mexico, 70 km southeast of Mexico City. Current models of the PVC’s plumbing system and magma petrogenesis are largely based on studies of isolated Plinian eruptions... Read More about A Pyroxenic View on Magma Hybridization and Crystallization at Popocatépetl Volcano, Mexico.

Nitrogen Mass Fraction and Stable Isotope Ratios for Fourteen Geological Reference Materials: Evaluating the Applicability of Elemental Analyser Versus Sealed Tube Combustion Methods (2020)
Journal Article
Boocock, T. J., Mikhail, S., Prytulak, J., Di Rocco, T., & Stüeken, E. E. (2020). Nitrogen Mass Fraction and Stable Isotope Ratios for Fourteen Geological Reference Materials: Evaluating the Applicability of Elemental Analyser Versus Sealed Tube Combustion Methods. Geostandards and Geoanalytical Research, 44(3), 537-551. https://doi.org/10.1111/ggr.12345

Thirteen commercially available silicate reference materials (RM) and one in‐house reference material, eleven of which have no previously published values, were analysed for nitrogen mass fraction and isotopic ratios with an Elemental Analyser (EA),... Read More about Nitrogen Mass Fraction and Stable Isotope Ratios for Fourteen Geological Reference Materials: Evaluating the Applicability of Elemental Analyser Versus Sealed Tube Combustion Methods.

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., Collier, J. S., Bie, L., Harmon, N., Hicks, S. P., Iveson, A. A., Prytulak, J., Rietbrock, A., Rychert, C. A., Davidson, J. P., & 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.

Rapid subduction initiation and magmatism in the Western Pacific driven by internal vertical forces (2020)
Journal Article
Maunder, B., Prytulak, J., Goes, S., & Reagan, M. (2020). Rapid subduction initiation and magmatism in the Western Pacific driven by internal vertical forces. Nature Communications, 11(1), Article 1874. https://doi.org/10.1038/s41467-020-15737-4

Plate tectonics requires the formation of plate boundaries. Particularly important is the enigmatic initiation of subduction: the sliding of one plate below the other, and the primary driver of plate tectonics. A continuous, in situ record of subduct... Read More about Rapid subduction initiation and magmatism in the Western Pacific driven by internal vertical forces.