Metasomatic alteration of zircon at lower crustal P-T conditions utilizing alkali- and F-bearing fluids: Trace element incorporation, depletion, and resetting the zircon geochronometer

Autor: Daniel E. Harlov, Robert Anczkiewicz, Daniel J. Dunkley

Publikováno v: Geochimica et Cosmochimica Acta. 352:222-235

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bf1365f48d41d2491a0e16046b90fcfc
https://doi.org/10.1016/j.gca.2023.05.011

Uivak II augen gneiss from the Saglek Block, Labrador: the current state of play

Autor: Tanmay Keluskar, Monika A. Kusiak, Daniel J. Dunkley, Martin J. Whitehouse, Simon A. Wilde, Keewook Yi, Shinae Lee

Interpreting Archean geology is often challenging due to the rocks having obscure field relationships and polymetamorphic histories (Kusiak et al. 2019; Dunkley et al. 2020). In such circumstances, U-Pb isotopic analysis of zircon is crucial for reve

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f3fd7785c2a5bde4908a822165e2f09b
https://doi.org/10.5194/egusphere-egu23-9487

Origin of orthopyroxene-bearing felsic gneiss from the perspective of ultrahigh-temperature metamorphism: an example from the Chilka Lake migmatite complex, Eastern Ghats Belt, India

Autor: Kaushik Das, Junji Torimoto, Daniel J. Dunkley, Sankar Bose

Publikováno v: Mineralogical Magazine. 84:712-737

Orthopyroxene-bearing felsic gneiss occurs as foliation-parallel layers and bands together with aluminous granulite, mafic granulite, and quartzofeldspathic granulite in the Chilka Lake migmatite complex of the Proterozoic Eastern Ghats Belt, India.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8bdcb964d2a84cb2b9ed4743f4cdb5a0
https://doi.org/10.1180/mgm.2020.71

Diversity of Archean crust in the eastern Tula Mountains, Napier Complex, East Antarctica

Autor: Monika A. Kusiak, Izabela Kocjan, Daniel J. Dunkley, Keewook Yi, Shinae Lee, Piotr Król, Simon A. Wilde

Publikováno v: Gondwana Research. 82:151-170

The Napier Complex of Enderby and Kemp Lands forms the north-western part of the East Antarctic Shield and consists predominantly of gneisses and granulites metamorphosed during a ca. 2.8 Ga high-grade and a ca. 2.5 Ga ultra-high temperature event. T

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d92d8e7da51af9987337aea1f3829d8b
https://doi.org/10.1016/j.gr.2019.12.014

Pb nanospheres in ancient zircon yield model ages for zircon formation and Pb mobilization

Autor: Monika A. Kusiak, Julien Malherbe, Dirk Schaumlöffel, Martin J. Whitehouse, Ian C. Lyon, Simon A. Wilde, Katie L. Moore, Daniel J. Dunkley, Richard Wirth

Publikováno v: Scientific Reports, Vol 9, Iss 1, Pp 1-9 (2019)
Scientific Reports
Scientific Reports, Nature Publishing Group, 2019, 9 (1), ⟨10.1038/s41598-019-49882-8⟩
Lyon, I, Kusak, M A, Wirth, R, Whitehouse, M J, Dunkley, D J, Wilde, S A, Schaumlöffel, D, Malherbe, J & Moore, K 2019, ' Pb nanospheres in ancient zircon yield model ages for zircon formation and Pb mobilization ', Scientific Reports . https://doi.org/10.1038/s41598-019-49882-8

Nanospheres of lead (Pb) have recently been identified in zircon (ZrSiO4) with the potential to compromise the veracity of U-Pb age determinations. The key assumption that the determined age is robust against the effects of Pb mobility, as long as Pb

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3e3b86e126be88d79001c70dbd1d31ab
http://link.springer.com/article/10.1038/s41598-019-49882-8