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Thallium elemental behavior and stable isotope fractionation during magmatic processes

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Thallium elemental behavior and stable isotope fractionation during magmatic processes. / Prytulak, J.; Brett, A.; Webb, M.; Plank, T.; Rehkämper, M.; Savage, P. S.; Woodhead, J.

In: Chemical Geology, Vol. 448, 05.01.2017, p. 71-83.

Research output: Contribution to journalArticle

Harvard

Prytulak, J, Brett, A, Webb, M, Plank, T, Rehkämper, M, Savage, PS & Woodhead, J 2017, 'Thallium elemental behavior and stable isotope fractionation during magmatic processes' Chemical Geology, vol. 448, pp. 71-83. https://doi.org/10.1016/j.chemgeo.2016.11.007

APA

Prytulak, J., Brett, A., Webb, M., Plank, T., Rehkämper, M., Savage, P. S., & Woodhead, J. (2017). Thallium elemental behavior and stable isotope fractionation during magmatic processes. Chemical Geology, 448, 71-83. https://doi.org/10.1016/j.chemgeo.2016.11.007

Vancouver

Prytulak J, Brett A, Webb M, Plank T, Rehkämper M, Savage PS et al. Thallium elemental behavior and stable isotope fractionation during magmatic processes. Chemical Geology. 2017 Jan 5;448:71-83. https://doi.org/10.1016/j.chemgeo.2016.11.007

Author

Prytulak, J. ; Brett, A. ; Webb, M. ; Plank, T. ; Rehkämper, M. ; Savage, P. S. ; Woodhead, J. / Thallium elemental behavior and stable isotope fractionation during magmatic processes. In: Chemical Geology. 2017 ; Vol. 448. pp. 71-83.

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@article{f513011ccfb24a4dbdb11ce26326d74c,
title = "Thallium elemental behavior and stable isotope fractionation during magmatic processes",
abstract = "Stable thallium (Tl) isotopes are an extremely sensitive tracer for the addition of small amounts of sediments or materials altered at low temperatures to the source(s) of mantle-derived melts. The ability of Tl to trace such materials is due to the large concentration contrast between the mantle (Tl < 2 ng/g) and possible exotic inputs (Tl ~ 100 ng/g to > μg/g), which also often display fractionated Tl isotope compositions. However, the magnitude of Tl isotope fractionation induced by igneous processes alone has not been systematically assessed. Here, two suites of co-genetic magmas, spanning a large range of differentiation, from Hekla, Iceland, and Anatahan, in the Mariana arc, are used to assess the behavior of thallium and its stable isotope variations during magmatic processes. Thallium behaves as a near-perfectly incompatible lithophile element throughout magmatic evolution, mirroring elements such as Rb, Cs, and K. Lavas from Hekla have restricted Cs/Tl ratios and stable Tl isotope compositions, which overlap with mantle estimates. Lavas from subduction-related Anatahan volcano also have a restricted range in Tl isotope composition, which overlaps with Hekla and MORB, demonstrating that fractional crystallisation and partial melting does not fractionate stable Tl isotopes. Subduction environments display variable Cs/Tl, indicating that the subduction process commonly fractionates these two elements. The immunity of thallium stable isotopes to fractionation by magmatic processes coupled with its extreme sensitivity for tracing pelagic sediments, FeMn crusts and low temperature altered oceanic crust highlight its value in elucidating the nature of mantle sources of both oceanic basalts and arc lavas. Critically, meaningful interpretation of thallium isotope compositions need not be restricted to primitive lavas.",
keywords = "Thallium, Stable isotopes, Hekla, Anatahan, Magmatic differentiation",
author = "J. Prytulak and A. Brett and M. Webb and T. Plank and M. Rehk{\"a}mper and Savage, {P. S.} and J. Woodhead",
note = "JP was partly supported by NERC fellowship NE/H01313X/2. AB was supported by a Janet Watson Earth Science and Engineering Departmental PhD studentship and MW was supported in part by an undergraduate research opportunity award from Imperial College London. Trace element analyses were supported from US NSF Grant EAR-1456814 to TP.",
year = "2017",
month = "1",
day = "5",
doi = "10.1016/j.chemgeo.2016.11.007",
language = "English",
volume = "448",
pages = "71--83",
journal = "Chemical Geology",
issn = "0009-2541",
publisher = "Elsevier",

}

RIS (suitable for import to EndNote) - Download

TY - JOUR

T1 - Thallium elemental behavior and stable isotope fractionation during magmatic processes

AU - Prytulak, J.

AU - Brett, A.

AU - Webb, M.

AU - Plank, T.

AU - Rehkämper, M.

AU - Savage, P. S.

AU - Woodhead, J.

N1 - JP was partly supported by NERC fellowship NE/H01313X/2. AB was supported by a Janet Watson Earth Science and Engineering Departmental PhD studentship and MW was supported in part by an undergraduate research opportunity award from Imperial College London. Trace element analyses were supported from US NSF Grant EAR-1456814 to TP.

PY - 2017/1/5

Y1 - 2017/1/5

N2 - Stable thallium (Tl) isotopes are an extremely sensitive tracer for the addition of small amounts of sediments or materials altered at low temperatures to the source(s) of mantle-derived melts. The ability of Tl to trace such materials is due to the large concentration contrast between the mantle (Tl < 2 ng/g) and possible exotic inputs (Tl ~ 100 ng/g to > μg/g), which also often display fractionated Tl isotope compositions. However, the magnitude of Tl isotope fractionation induced by igneous processes alone has not been systematically assessed. Here, two suites of co-genetic magmas, spanning a large range of differentiation, from Hekla, Iceland, and Anatahan, in the Mariana arc, are used to assess the behavior of thallium and its stable isotope variations during magmatic processes. Thallium behaves as a near-perfectly incompatible lithophile element throughout magmatic evolution, mirroring elements such as Rb, Cs, and K. Lavas from Hekla have restricted Cs/Tl ratios and stable Tl isotope compositions, which overlap with mantle estimates. Lavas from subduction-related Anatahan volcano also have a restricted range in Tl isotope composition, which overlaps with Hekla and MORB, demonstrating that fractional crystallisation and partial melting does not fractionate stable Tl isotopes. Subduction environments display variable Cs/Tl, indicating that the subduction process commonly fractionates these two elements. The immunity of thallium stable isotopes to fractionation by magmatic processes coupled with its extreme sensitivity for tracing pelagic sediments, FeMn crusts and low temperature altered oceanic crust highlight its value in elucidating the nature of mantle sources of both oceanic basalts and arc lavas. Critically, meaningful interpretation of thallium isotope compositions need not be restricted to primitive lavas.

AB - Stable thallium (Tl) isotopes are an extremely sensitive tracer for the addition of small amounts of sediments or materials altered at low temperatures to the source(s) of mantle-derived melts. The ability of Tl to trace such materials is due to the large concentration contrast between the mantle (Tl < 2 ng/g) and possible exotic inputs (Tl ~ 100 ng/g to > μg/g), which also often display fractionated Tl isotope compositions. However, the magnitude of Tl isotope fractionation induced by igneous processes alone has not been systematically assessed. Here, two suites of co-genetic magmas, spanning a large range of differentiation, from Hekla, Iceland, and Anatahan, in the Mariana arc, are used to assess the behavior of thallium and its stable isotope variations during magmatic processes. Thallium behaves as a near-perfectly incompatible lithophile element throughout magmatic evolution, mirroring elements such as Rb, Cs, and K. Lavas from Hekla have restricted Cs/Tl ratios and stable Tl isotope compositions, which overlap with mantle estimates. Lavas from subduction-related Anatahan volcano also have a restricted range in Tl isotope composition, which overlaps with Hekla and MORB, demonstrating that fractional crystallisation and partial melting does not fractionate stable Tl isotopes. Subduction environments display variable Cs/Tl, indicating that the subduction process commonly fractionates these two elements. The immunity of thallium stable isotopes to fractionation by magmatic processes coupled with its extreme sensitivity for tracing pelagic sediments, FeMn crusts and low temperature altered oceanic crust highlight its value in elucidating the nature of mantle sources of both oceanic basalts and arc lavas. Critically, meaningful interpretation of thallium isotope compositions need not be restricted to primitive lavas.

KW - Thallium

KW - Stable isotopes

KW - Hekla

KW - Anatahan

KW - Magmatic differentiation

UR - http://www.sciencedirect.com/science/article/pii/S0009254116306003#appd001

U2 - 10.1016/j.chemgeo.2016.11.007

DO - 10.1016/j.chemgeo.2016.11.007

M3 - Article

VL - 448

SP - 71

EP - 83

JO - Chemical Geology

T2 - Chemical Geology

JF - Chemical Geology

SN - 0009-2541

ER -

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ID: 247456707