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hafnium

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Series: GSA Special Papers
Published: 14 March 2025
DOI: 10.1130/2025.2563(08)
EISBN: 9780813795638
... ABSTRACT Hafnium isotope ratios in Late Jurassic zircon from the Summit Gabbro provide geochemical evidence for rifting at ca. 148 Ma through the southern Sierra Nevada arc crust. Previous evidence for intra-arc extension includes a linear distribution of early Mesozoic volcano-sedimentary...
Journal Article
Published: 03 February 2025
Journal of the Geological Society (2025) 182 (2): jgs2024-109.
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Journal Article
Published: 20 December 2024
Bulletin de la Société Géologique de France (2025) 195 (1): 27.
... a révélé un âge de cristallisation tardi-édiacarien (autour de 545 Ma) pour les (meta)tonalites. La géochimie des roches totales (notamment les anomalies négatives en Nb) et les compositions isotopiques en hafnium très radiogéniques mesurées sur les grains de zircon (avec des εHf (545Ma) d’environ +11...
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Journal Article
Journal: Lithosphere
Publisher: GSW
Published: 17 December 2024
Lithosphere (2024) 2024 (4): lithosphere_2023_178.
... Patchett , “Behavior of hafnium and neodymium isotopes in the crust: constraints from Precambrian crustally derived granites” , Geochimica et Cosmochimica Acta , vol. 60 , no. 19 , pp . 3717 – 3733 , 1996 . 84 W. L. Griffin , X. Wang , S. E. Jackson , et al...
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Journal Article
Published: 01 December 2024
Russ. Geol. Geophys. (2024) 65 (12): 1412–1431.
... for the standard zircon samples was 0.282066 ± 6 for GJ-1 (2σ; n = 11) and 0.282511 ± 7 for Plešovice (2σ; n = 4). The primary hafnium isotope ratio 176 Hf/ 177 Hf i was calculated using the decay constant 176 Lu = 1.867 × 10 –11 years –1 [ Scherer et al., 2001 ]. The ε Hf value was calculated using...
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Journal Article
Journal: GSA Bulletin
Published: 05 November 2024
GSA Bulletin (2025) 137 (3-4): 1670–1686.
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Journal Article
Published: 01 November 2024
Russ. Geol. Geophys. (2024) 65 (11): 1316–1333.
... deposits (Kola Peninsula, Arctic zone, Russia). The zircons studied here have several distinguishing features. Firstly, anomalously high lithium content (up to 327 ppm Li according to secondary ion mass spectrometry data). Secondly, high hafnium content (up to 39.21 wt.% of HfO 2 according to electron...
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Journal Article
Published: 22 October 2024
Journal of the Geological Society (2025) 182 (1): jgs2024-020.
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Journal Article
Journal: GSA Bulletin
Published: 11 October 2024
GSA Bulletin (2025) 137 (3-4): 1437–1455.
... model for the Proterozoic growth of North America : Geosphere , v. 3 , p. 220 – 259 , https://doi.org/10.1130/GES00055.1 . Wooden , J.L. , Barth , A.P. , and Mueller , P.A. , 2013 , Crustal growth and tectonic evolution of the Mojave crustal province: Insights from hafnium...
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Journal Article
Journal: Geology
Published: 11 October 2024
Geology (2024) 52 (12): 922–926.
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Journal Article
Published: 02 October 2024
Journal of the Geological Society (2024) 181 (6): jgs2024-103.
... Supplementary material: U–Pb zircon dating, hafnium and oxygen isotopes of the detrital zircons from the Tingjiang River are available at https://doi.org/10.6084/m9.figshare.c.7393536 Accurate dating and the widespread distribution of rocks in the continental crust are fundamental to studies...
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Journal Article
Published: 23 September 2024
Geological Magazine (2023) 160 (12): 2129–2146.
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Journal Article
Published: 18 September 2024
Journal of the Geological Society (2024) 181 (6): jgs2024-017.
... (perthite, sanidine, anorthoclase) whereas the tuffaceous rocks contain alkali feldspar and oligoclase. Hafnium isotopes were analysed on zircons dated by Shellnutt et al. (2017) for samples CSS-001 (six spots), CSS-002 (11 spots) and CSS-009 (five spots) ( Fig. 6 ; Supplementary material Table S4...
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Journal Article
Published: 01 September 2024
Russ. Geol. Geophys. (2024) 65 (9): 1052–1061.
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Journal Article
Published: 24 July 2024
Journal of the Geological Society (2024) 181 (5): jgs2024-049.
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Journal Article
Journal: GSA Bulletin
Published: 10 June 2024
GSA Bulletin (2024) 136 (11-12): 5283–5299.
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Journal Article
Journal: Economic Geology
Published: 01 June 2024
Economic Geology (2024) 119 (4): 967–988.
... corroborate the hypothesis that the magmatism in the Golden Quadrilateral evolved in a tectonic environment dominated by major (up to 70°) crustal block rotation. Hafnium isotope composition of Neogene zircon (ε Hf between –2 and 10) supports the predominant origin of the magmas from a heterogeneous...
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Journal Article
Published: 23 May 2024
Journal of the Geological Society (2024) 181 (4): jgs2023-176.
... , A.W. 1984 . Hafnium/rare earth element fractionation in the sedimentary system and crustal recycling into the Earth's mantle . Earth and Planetary Science Letters , 69 , 365 – 378 , https://doi.org/10.1016/0012-821x(84)90195-x Peccerillo , A. and Taylor , S.R. 1976...
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Journal Article
Published: 29 April 2024
Journal of the Geological Society (2024) 181 (4): jgs2023-109.
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Journal Article
Journal: GSA Bulletin
Published: 24 April 2024
GSA Bulletin (2024) 136 (11-12): 4761–4774.
... spots on zircons. Figure 5. Hafnium isotopic compositions of detrital zircons from Lower Permian sedimentary rocks of the Shitoukoumen Formation in central Jilin Province, NE China. CAOB—Central Asian Orogenic Belt; YFTB—Yanshan fold-and-thrust belt ( Yang et al., 2006 ). Data for igneous...
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