ORCID Profile
0000-0002-0533-1162
Current Organisations
University of Western Australia
,
The University of Western Australia Faculty of Science
,
Swedish museum of Natural History
,
Geology
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Publications
The Kelly Dyke swarm, Pilbara Craton: a 3317 Ma large igneous province?
Publisher: Informa UK Limited
Date: 12-10-2022
A Yilgarn seed to the Pilbara Craton (Australia)? Evidence from inherited zircons
Publisher: Geological Society of America
Date: 25-09-2019
DOI: 10.1130/G46696.1
Abstract: Knowledge of the age and compositional architecture of Archean cratonic lithosphere is critical for models of geodynamics and continental growth on early Earth, but can be difficult to unravel from the exposed geology. We report the occurrence of numerous .7 Ga zircon crystals in 3.45 Ga rhyolites of the eastern Pilbara Craton (Western Australia), which preserve evidence for an Eoarchean meta-igneous component in the deep Pilbara crust. This inherited zircon population shares similar and distinctive age and Hf-O isotope characteristics with the oldest gneissic components of the Yilgarn Craton ∼500 km farther south, suggesting a common ca. 3.75 Ga felsic crustal nucleus to these two Archean granite-greenstone terranes. We infer a pivotal role for such ‘seeds’ in facilitating the growth and persistence of Archean continental lithosphere.
Zircon U–Pb–Hf evidence for subduction related crustal growth and reworking of Archaean crust within the Palaeoproterozoic Birimian terrane, West African Craton, SE Ghana
Publisher: Elsevier BV
Date: 04-2016
Extensive reworking of Archaean crust within the Birimian terrane in Ghana as revealed by combined zircon U-Pb and Lu-Hf isotopes
Publisher: Elsevier BV
Date: 2018
The robustness of the Lu-Hf and Sm-Nd isotopic systems during metamorphism – A case study of the Åker metabasite in southern Sweden
Publisher: Elsevier BV
Date: 08-2023
Evening electronic device use and sleep patterns in athletes
Publisher: Informa UK Limited
Date: 16-10-2018
DOI: 10.1080/02640414.2018.1531499
Abstract: The present study aimed to investigate pre-sleep behaviours (including evening electronic device use) and sleep quantity in well-trained athletes. Seventy well-trained athletes (44 females, 26 males) aged 21 ± 4 y from a range of team and in idual sports were asked to complete an online sleep diary for 7 days. The sleep diary included questions about pre-sleep behaviours (e.g. napping, caffeine intake), electronic device use in the 2 h prior to bedtime (e.g. type of device and duration of use) and sleep (e.g. time in bed, sleep onset latency). On average, athletes spent 8:20 ± 1:21 h in bed each night. Associations between age, time in bed and sleepiness suggested that younger athletes spent more time in bed (B = -0.05, p = 0.001) but felt sleepier (r = -0.32, p < 0.01) than older athletes. On average, athletes mostly used electronic devices for 0-30 min prior to sleep. The use of multiple devices in the evening was associated with more perceived difficulty in falling asleep (B = 0.22, p = 0.03), but no associations existed with other sleep variables. In summary, younger athletes may require later start times or improved sleep quality to resolve excessive sleepiness.
Formation of early Archean Granite-Greenstone Terranes from a globally chondritic mantle: Insights from igneous rocks of the Pilbara Craton, Western Australia
Publisher: Elsevier BV
Date: 09-2020
Birimian crustal growth in the West African Craton: U-Pb, O and Lu-Hf isotope constraints from detrital zircon in major rivers
Publisher: Elsevier BV
Date: 02-2018
A new 3.59 Ga magmatic suite and a chondritic source to the east Pilbara Craton
Publisher: Elsevier BV
Date: 04-2019
Response of Sm–Nd isotope systematics to complex thermal histories: A case study from 3.58 Ga gneisses of the Pilbara Craton
Publisher: Elsevier BV
Date: 10-2023
Tectonic switches recorded in a Paleoproterozoic accretionary orogen in the Alta Floresta Mineral Province, southern Amazonian Craton
Publisher: Elsevier BV
Date: 09-2021
Zircon U-Pb, Hf and O isotope constraints on growth versus reworking of continental crust in the subsurface Grenville orogen, Ohio, USA
Publisher: Elsevier BV
Date: 08-2015
A linked evolution for granite-greenstone terranes of the Pilbara Craton from Nd and Hf isotopes, with implications for Archean continental growth
Publisher: Elsevier BV
Date: 2023
Mesoproterozoic continental growth: U–Pb–Hf–O zircon record in the Idefjorden Terrane, Sveconorwegian Orogen
Publisher: Elsevier BV
Date: 05-2015
Persistent mildly supra-chondritic initial Hf in the Lewisian Complex, NW Scotland: Implications for Neoarchean crust-mantle differentiation
Publisher: Elsevier BV
Date: 09-2022
The ca. 2785–2805 Ma High Temperature Ilivertalik Intrusive Complex of Southern West Greenland
Publisher: MDPI AG
Date: 24-08-2018
DOI: 10.3390/GEOSCIENCES8090319
Abstract: Ferroan granitoid intrusions are rare in the Archaean rock record, but have played a large role in the evolution of the Proterozoic crust, particular in relation to anorthosite-mangerite-charnockite-granite suites. Here we discuss the petrogenesis of the ca. 2785–2805 Ma ferroan Ilivertalik Intrusive Complex, which has many geochemical similarities to Proterozoic iron rich granitoids. We present major and trace element whole rock chemistry and combined in-situ zircon U-Pb, Hf and O isotope data. The intrusive complex ides into: (i) minor tabular units of mainly diorite-tonalite compositions, which are typically situated along contacts to the host basement and (ii) interior larger, bodies of mainly granite-granodiorite composition. Geochemically these two unites display continuous to semi-continuous trends in Haker-diagrams. Whole rock REE enrichment display increases from Yb to La, from 10–25 to 80–100 times chondrite, respectively. The diorite-tonalite s les are generally more enriched in REE compared to the granite-granodiorite s les. The complex has hafnium isotope compositions from around +1.5 to −2.5 epsilon units and δ18O compositions in the range of 6.3 to 6.6‰. The complex is interpreted to be derived from partial melting in a crustal source region during anomalously high crustal temperatures.
Zircon U–Pb-Hf isotope data in eclogite and metagabbro from southern Sweden reveal a common long-lived evolution and enriched source
Publisher: Informa UK Limited
Date: 10-2020
Cratonisation of Archaean continental crust: Insights from U–Pb zircon geochronology and geochemistry of granitic rocks in the Narryer Terrane, northwest Yilgarn Craton
Publisher: Elsevier BV
Date: 05-2022
Zircon U–Pb and Hf – isotopes from the eastern part of the Sveconorwegian Orogen, SW Sweden: implications for the growth of Fennoscandia
Publisher: Geological Society of London
Date: 22-08-2013
DOI: 10.1144/SP389.2
Break-up related 2170–2120 Ma mafic dykes across the North Atlantic craton: Final dismembering of a North Atlantic-Dharwar craton connection?
Publisher: Elsevier BV
Date: 08-2019
Tracing Proterozoic arc mantle Hf isotope depletion of southern Fennoscandia through coupled zircon U–Pb and Lu–Hf isotopes
Publisher: Elsevier BV
Date: 07-2017
Related Organisations
The University Of Western Australia Faculty Of Science
Location: Australia
Related Funding Activities
New Insights Into Early Archean Mantle Evolution From Hf Isotopes In Baddeleyite
Start Date: 2018
End Date: 2019
Funder: University of Western Australia
View Funded Activity