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

Teresa E. Jeffries

Natural History Museum

Stéphanie Lasalle

University of Portsmouth

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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The effect of recycling on provenance determinations

Penelope J. Lancaster Shane Tyrrell J. Stephen Daly Craig Storey

Sedimentary rocks and modern sediments sample large volumes of the Earth’s crust, and preserve units that vary greatly in age and composition. Determining the provenance of component minerals is complicated by the ability of some minerals to be recycled through multiple sedimentary cycles, so minerals from completely unrelated sources may end up in the same sedimentary basin. To untangle these multi-stage signals, two or more chemical signatures measured in minerals with different stability are required. For instance, labile minerals, such as feldspar, can break down rapidly during sedimentary transport, while refractory minerals, such as zircon, can be much more resilient and survive repeated recycling. One sedimentary succession suitable for testing this hypothesis is the Upper Carboniferous Millstone Grit Group, a fluvio-deltaic, upward-coarsening sequence of mudstones, sandstones and conglomerates deposited in the Pennine Basin of northern England over c. 14 myr. New isotopic data have been measured in detrital K-feldspar and zircon from five of the seven stages, complementing previous work in the area [1,2,3]. Two K-feldspar Pb isotope peaks at 206Pb/204Pb = 12.5–15.5 and c. 18.4 indicate derivation from Archaean–Proterozoic basement and Caledonian granites, respectively. Zircon U–Pb age peaks at c. 2700, 1000–2000 and 430 Ma reflect a mixture of Archaean basement, Proterozoic sediments and Caledonian granites, while Hf model ages form two broad peaks at c. 4500–3000 and 2300–1500 Ma, indicating contributions from both juvenile and reworked crust. Strong similarities between potential sources in this complicated region mean no one mineral or isotopic system can provide a unique provenance determination. Instead, comparing first-cycle and multi-cycle minerals with different hydrodynamic properties is necessary to untangle the full story. Combining these results with published garnet, monazite and muscovite data demonstrates the power of multi-proxy provenance work, indicating a primary source area in the Greenland Caledonides, with minor contributions from Norway and Scot-land. Comparisons between zircon U–Pb distributions in Palaeozoic sediments suggest long-lived sedimentary systems recycled material around the North Atlantic over c. 100 myr, much of it ultimately derived along the Grenvillian margin of Laurentia. This consistency is interrupted only by regular variations in palaeoflow direction, reflecting tectonic evolution in the region.

Basement

Heavy mineral

Detritus

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Zircon Composition at Different Stages of the Variscan Orogeny

Elżbieta Słodczyk Anna Pietranik Craig Storey Stéphanie Lasalle

Orogeny

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Late-Proterozoic tectonics in northwest Scotland: one contractional orogeny or several?

Precambrian Research (2004)

Craig Storey T. S. Brewer R. R. Parrish

Mylonite

Titanite

Sillimanite

Orogeny

Greenschist

10.1016/j.precamres.2004.06.004

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Citations (39)

Step-like growth of the continental crust in South China: evidence from detrital zircons in Yangtze River sediments

Lithos (2018)

Zheng-Wei Liang Shan Gao Chris Hawkesworth Yuan-Bao Wu Craig Storey

Supercontinent

Rodinia

10.1016/j.lithos.2018.09.011

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Citations (15)

Dating shear zones with plastically deformed titanite: New insights into the orogenic evolution of the Sudbury impact structure (Ontario, Canada)

Precambrian Research (2017)

Konstantinos Papapavlou James Darling Craig Storey Peter C. Lightfoot D. E. Moser

Titanite

Mylonite

Orogeny

Shearing (physics)

10.1016/j.precamres.2017.01.007

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Citations (51)

Detrital Zircon Data from the Eastern Mixteca Terrane, Southern Mexico

CRC Press eBooks (2008)

J. Duncan Keppie R Nance Javier Fernández‐Suárez Craig Storey Teresa E. Jeffries

10.1201/9781420073737.ch9

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Citations (1)

Common lead-corrected laser ablation ICP–MS U–Pb systematics and geochronology of titanite

Chemical Geology (2005)

Craig Storey Teresa E. Jeffries Martin Smith

Geochronology

Titanite

Laser Ablation

Isotope dilution

10.1016/j.chemgeo.2005.09.003

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Citations (194)

Microanalyzing Metasomatism: Correlative Microanalysis of Trace Elements and Oxygen Isotopes in the Franciscan

AGU Fall Meeting Abstracts (2017)

Andrea Goltz William Hoover F. Zeb Page Hugo Moreira Craig Storey

Microanalysis

Correlative

Metasomatism

TRACE (psycholinguistics)

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Stratigraphy and tectonic setting of the host rocks to the Tjårrojåkka Fe-oxide Cu-Au deposits, Kiruna area, northern Sweden

GFF (2006)

Åsa Edfelt Alessandro Sandrin Paul Evins Teresa E. Jeffries Craig Storey

Abstract The Tjårrojåkka area is located about 50 km WSW of Kiruna, northern Sweden, and hosts one of the best examples of spatially and possibly genetically related Fe-oxide and Cu-Au occurrences in the area. The bedrock is dominated by intermediate and basic extrusive and intrusive rocks. An andesite constrains the ages of these rocks with a U-Pb LA-ICPMS age of 1878±7 Ma. They are cut by dolerites, which acted as feeder dykes for the overlying basalts. Based on geochemistry and the obtained age the andesites and basaltic andesites can be correlated with the 1.9 Ga intermediate volcanic rocks of the Svecofennian Porphyrite Group in northern Sweden. They formed during subduction-related magmatism in a volcanic arc environment on the Archaean continental margin above the Kiruna Greenstone Group. Chemically the basalts and associated dolerites have the same signature, but cannot directly be related to any known basaltic unit in northern Sweden. The basalts show only minor contamination of continental crust and may represent a local extensional event in a subaquatic back arc setting with extrusion of mantle derived magma. The intrusive rocks range from gabbro to quartz-monzodiorite in composition. The area is metamorphosed at epidote-amphibolite facies and has been affected by scapolite, K-feldspar, epidote, and albite alteration that is more intense in the vicinity of deformation zones and mineral deposits. Three events of deformation have been distinguished in the area. D1 brittle-ductile deformation created NE-SW-striking steep foliation corresponding with the strike of the Tjårrojåkka-Fe and Cu deposits and was followed by the development of an E-W deformation zone (D2). A compressional event (D3), possible involving thrusting from the SW, produced folds in the central part of the area and a NNW-SSE striking deformation zone in NE.

Andesites

Continental arc

10.1080/11035890601283221

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Citations (11)

The Niemcza diorites and moznodiorites (Sudetes, SW Poland): a record of changing geotectonic setting at ca. 340 Ma.

Geological Quarterly (2013)

Anna Pietranik Craig Storey Jakub Kierczak

Granites sensu lato in the Sudetes intruded in several episodes during the Variscan orogeny recording different stages of crust and mantle evolution. Correlating precise ages with geochemistry of the Variscan granites provides information on the evolution of these sources within the Variscan orogen. The Variscan intrusive rocks from the Niemcza Zone (Bohemian Massif, Sudetes, SW Poland) include undeformed dioritic to syenitic rocks and magmatically foliated granodiorites. In this study we analysed low SiO2 (48–53 wt.%) monzodioritic rocks from Przedborowa and Koźmice. The monzodiorites contain late-magmatic zircons with ages of 341.8 ± 1.9 Ma for Przedborowa and 335.6 ± 2.3 Ma for Koźmice, interpreted as emplacement ages of the dioritic magmas. Older Przedborowa rocks are lower in K, Mg, Rb and Ni than the Koźmice rocks and similar compositional trend is also observed in the Central Bohemian Plutonic Complex. The implication is that the mantle underlying the Niemcza Zone became more enriched from ca. 342 to ca. 336 Ma, probably following the collision of the Saxothuringian and Moldanubian/Lugian domains. The magmatism related to the collision occurred ca. 12 Ma later than that in the Central Bohemian Plutonic Complex, but was accompanied by a similar change in magma chemistry from high-K (Przedborowa) to shoshonitic (Koźmice, Kośmin enclaves) and probably to ultrapotassic (Wilków Wielki)

Massif

Orogeny

10.7306/gq.1084

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Citations (19)