Craig Storey

University of Portsmouth

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Chris Hawkesworth

University of Bristol

Bruno Dhuime

Géosciences Montpellier

James Darling

University of Portsmouth

Mike Fowler

University of Portsmouth

Hugo Moreira

Université de Montpellier

Emilie Bruand

Université de Bretagne Occidentale

Penelope J. Lancaster

University of Portsmouth

Stéphanie Lasalle

University of Portsmouth

Teresa E. Jeffries

Natural History Museum

Anna Pietranik

University of Wrocław

Cooperative Institutions

University of Portsmouth

University of Bristol

University of Leicester

Universidade Federal de Ouro Preto

Centre National de la Recherche Scientifique

British Geological Survey

Natural History Museum

Universidade do Estado do Rio de Janeiro

University of Edinburgh

Cardiff University

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Craton-scale variations in crustal evolution: new insights from Scottish Highland detrital zircon

Penelope J. Lancaster Craig Storey Chris Hawkesworth

Recent work on the evolution of the Earth’s continental crust has focussed on the ability of refractory minerals, such as zircon, to preserve information about crustal units long since lost from the rock record. Techniques used in these studies include U-Pb ages of crystallisation, δ18O to track crustal contamination, and Hf model ages of source rock extraction from the mantle. Such analyses, either alone or in combination, can provide insight into questions on a range of scales, from identifying early recycled material in younger crust, to locating similar (possibly related) source rocks now separated by great distances and investigating whether early crustal production were regional or global in extent. Work on detrital zircons from key areas of Hadean and Early Archaean crust - the Jack Hills (eastern Australia), Acasta Gneiss and Slave Province (Canada) and the Limpopo Belt (southern Africa) - has suggested crustal generation was episodic, with distinct peaks every 0.3-0.6 Ga from 4.5-1.2Ga. Younger sediments from other areas of the world could record many of the same events, and/or identify new ones. One such area is north-west Scotland, which comprises various unconformable Proterozoic and Palaeozoic (meta)sedimentary units that have sampled the underlying basement, and potentially basement from further afield within Laurentia and possibly Baltica. While many studies in other localities have presented combined U-Pb and Hf data to identify episodes of crustal production, the addition of δ18O analyses can distinguish between production of juvenile crust and reworking of pre-existing (sedimentary) material. We present the first correlated in situ U-Pb, δ18O and eHf data from detrital zircons sampled throughout the region, including the Meso- to Neoproterozoic Torridonian and Moine Supergroup and Cambro-Ordovician sediments. These data identify significant juvenile extraction events at c.1.6, c.2.2 and c.3.3Ga, without regard to stratigraphic level. In addition, three zircon crystallisation episodes correspond with the onset of supercontinent stabilisation - Superia, Nuna and Rodinia. The extraction events identified in this study fall between those recognised from older sediments in previous work, suggesting possible differences in the records of crust generation preserved in different terrains. Such differences may be of assistance when tracking continental cratons through the formation and destruction of supercontinents such as Rodinia. These samples also contribute to our understanding of Scottish regional geology, and our ability to correlate these detrital repositories with those in other parts of the world. Previous U-Pb provenance work indicates these Scottish rocks correlate with similar sequences in Greenland and Labrador, Canada, all derived from now-absent units on greater Laurentia. The Scottish data represent the first crustal evolution work of this kind to be undertaken on this significant craton.

Hadean

Laurentia

Basement

Crustal recycling

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Apatite Sulphur speciation in plutonic rocks: a probe for secular oxidation state of the mantle?

Goldschmidt Abstracts (2021)

Craig Storey Hugo Moreira Emilie Bruand James Darling Bruno Dhuime

Oxidation state

10.7185/gold2021.5246

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U–Pb isotopic dating of titanite microstructures: potential implications for the chronology and identification of large impact structures

Contributions to Mineralogy and Petrology (2018)

Konstantinos Papapavlou James Darling D. E. Moser I. Barker L. F. White

Titanite

Impact structure

Overprinting

Closure temperature

Radiometric dating

10.1007/s00410-018-1511-0

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Citations (25)

PETROLOGY AND TRACE ELEMENT THERMOMETRY OF GARNET-QUARTZITE FROM THE CATALINA SCHIST

Abstracts with programs - Geological Society of America (2016)

Elena Sohn Hartley Inês Pereira Hugo Moreira F. Zeb Page Craig Storey

Trace element

TRACE (psycholinguistics)

10.1130/abs/2016am-282181

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Citations (1)

Abstracts from the 2017–2018 Mineral Deposits Studies Group meeting

Applied Earth Science Transactions of the Institutions of Mining and Metallurgy (2018)

Licia Santoro St. Tshipeng Yav Éric Pirard Arthur Tshamala Kaniki Giuseppe Arfè

10.1080/25726838.2018.1487425

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Citations (1)

Mineral chemistry of accessory phases in a High Ba-Sr suite: Scottish Caledonian appinites and granites

The EGU General Assembly (2013)

Emilie Bruand Mike Fowler Craig Storey

Crustal evolution is currently governed by plate tectonics and it has been shown that between the Archean and the Phanerozoic major changes in subduction styles occured. Among others, the chemistry of different plutonic rocks through time and the understanding of their petrogenesis have helped to define different stages in the evolution of plate tectonics. An important change around 2.7 Ga led to the genesis of rocks that are the result of a metasomatized mantle wedge: the sanukitoids. This event is interpreted as the result of the evolution from a shallow to a steep subduction style. Modern plate tectonics is now generally generating calc-alkaline suites but exceptions can occur such as the Caledonian (Palaeozoic) high Ba-Sr plutons in northern Scotland. The latter have been interpreted as a modern analogue of the sanukitoids. In this contribution, we aim to study this Caledonian sanukitoid-like suite from northern Scotland. Whole rock chemistry (trace elements and stable isotopes) of these rocks ranging from appinitic to granitoid in composition are well constrained but it has been argued that careful study of accessory phases can give more information on the petrogenesis of the plutons. The incorporation of trace elements and more particularly rare earth elements (REE) into their structures make them ideal to understand petrogenetic processes. Here, we present a detailed petrographic study and systematic analysis of trace elements of apatite, titanite and zircon in a range of plutonic rocks from appinitic to granitoid compositions. Trace elements in these accessory phases give direct access to the crystallisation history of these plutons. With these data, we suggest that apatite and titanite record in-situ crystal fractionation and mixing processes. Whole-rock reverse modelling, using single grain apatite or titanite trace element compositions, give reliable results. These results also highlight the relationship between the appinite and granitoid rocks and their petrogenetic history.

Petrogenesis

Titanite

Anatexis

Trace element

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Detrital rutile: Records of the deep crust, ores and fluids

Lithos (2023)

Inês Pereira Craig Storey

Rutile is a robust heavy mineral that can survive multiple sedimentary cycles. It is common in high-grade metamorphic rocks and hydrothermally-altered rocks. Hence, it can be a recorder of either the deep crust or of ores and fluids. In this review paper we cover a range of different topics concerning the use and application of detrital rutile as a means of retrieving these records and highlight some important recent advances. We discuss the occurrence of rutile formed at different pressures and temperatures and how we can use it to fingerprint metamorphic processes, with a focus on the use of combined Zr-thermometry and mineral inclusion geothermobarometry. We then present a review and discussion on the approaches made using detrital rutile trace element and isotopic geochemistry in provenance studies. We present some of the strengths and limitations of combining trace element and U–Pb isotopic dating to detrital rutile, including a discussion on U–Pb detrital rutile dating and different trace element diffusivities with an evaluation of potential decoupling between these. We then discuss some of the applications of detrital rutile in unravelling large scale geodynamic or tectonic processes. We also summarise the main features of rutile associated to ores and how these may be used using detrital rutile as an ore mineral vector. We finish with some considerations regarding the stability of detrital rutile in the upper crust, either by means of metamorphic or fluid-related processes, and how this may affect studies relying on detrital rutile.

Rutile

Trace element

10.1016/j.lithos.2022.107010

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Citations (27)

Terrane Processes at the Margins of Gondwana Editors A.P.M. Vaughan, P.T. Leat and R.J. Pankhurst Geological Society of London Special Publication, 2005 ISBN 1-86239-179-3. 456 pages. £95/$171 (members £47.50/$103).

Antarctic Science (2006)

Craig Storey

Terrane Processes at the Margins of Gondwana Editors A.P.M. Vaughan, P.T. Leat and R.J. Pankhurst Geological Society of London Special Publication, 2005 ISBN 1-86239-179-3. 456 pages. £95/103). - Volume 18 Issue 1

10.1017/s0954102006210162

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Provenance of Neoproterozoic and early Paleozoic siliciclastic rocks of the Teplá-Barrandian unit (Bohemian Massif): Evidence from U–Pb detrital zircon ages

Gondwana Research (2010)

Kerstin Drost Axel Gerdes Teresa E. Jeffries Ulf Linnemann Craig Storey

Massif

Siliciclastic

Detritus

Devonian

10.1016/j.gr.2010.05.003

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