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Linking thermodynamic modelling, Lu–Hf geochronology and

We sampled garnet-bearing rocks for Lu-Hf and Sm-Nd dating from four locations in the Nevado-Fila´bride Complex, covering most of the exposed area (localities 5, 6, 11, and 13 in Fig. 2B).

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(PDF) Lu-Hf Dating: The Lu-Hf Isotope System - ResearchGate

Application of Lu–Hf garnet dating to unravel the relationships between deformation, metamorphism and plutonism: An example from the Prince Rupert area, British Columbia S.J. Wyld, J.E. WrightNew evidence for Cretaceous strike-slip faulting in the United States cordillera and implications for terrane-displacement, deformation patterns

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Lu-Hf geochronology applied to dating Cenozoic events

Lu-Hf garnet dating of burial-related garnet growth in the Raft River Mountains yielded a Late Jurassic age of 149.9 ± 1.2 Ma (2sigma, MSWD = 1.1) based on three garnet fractions and a whole rock. A PT path from the schist of Mahogany Peaks in the Albion Range, Idaho, records an isothermal pressure increase indicating growth during thrusting.

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Lu–Hf garnet geochronology applied to plate boundary zones

In contrast, the Lu–Hf system may provide a more robust method of dating mantle lithologies, particularly of garnet peridotites, garnet pyroxenites and eclogites (e.g.

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Geochronology and Thermochronology | Geochemistry

Linking thermodynamic modelling, Lu–Hf geochronology and trace elements in garnet: new P–T–t paths from the Sevier hinterland A. M. CRUZ-URIBE,1,*T.D.HOISCH,1 M. L. WELLS,2 J. D. VERVOORT3 AND F. K. MAZDAB4,† 1School of Earth Sciences and Environmental Sustainability, Northern Arizona University, PO Box 4099, Flagstaff, AZ 86011, USA ([email protected])

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Using garnet to constrain the duration and rate of water

For five paragneisses and two orthogneisses, Lu–Hf garnet ages range from 116 to 111 Ma, c. 12–17 Ma older than published Sm–Nd garnet ages of 102–99 Ma from three of the same samples. Garnet grains in the analysed samples generally have Lu-enriched rims relative to Lu-depleted cores.

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Dating subduction‐zone metamorphism with combined garnet

GSA Annual Meeting in Seattle, Washington, USA - 2017. Paper No. 181-3. Presentation Time: 9:00 AM-6:30 PM . GARNET LU-HF AND ZIRCON U-PB DATING CONSTRAINS EARLIEST PALEOPROTEROZOIC (2.43 GA) THERMAL EVENT IN THE RUBY RANGE, SW MONTANA In this study we use U-Pb zircon and Lu-Hf garnet geochronology to determine magmatic and metamorphic …

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Early Miocene continental subduction and rapid exhumation

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Plešovice zircon A new natural reference material for Pb

Fine grains of garnet (100–150 μm) occur within 4.0) are similar to other high Lu/Hf minerals commonly utilized in Lu-Hf geochronology such as apatite or garnet (e.g., Barfod et …

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2 Combined geochemistry and geochronology constrains coupled subduction of oceanic and metamorphism. In this study, Lu–Hf garnet, U–Pb zircon, and Ar–Ar mica ages are combined This can be done by dating the

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Canadian Journal of Earth Sciences - NRC Research Press

a Syracuse University, Dept. of Earth Sciences, Syracuse, NY 13244, USA b Washington State University, School of Earth and Environmental Science Zirakparvar, N.A., et al., Lu–Hf garnet geochronology applied to plate boundary zones: Insights from the (U)HP terrane exhumed within the Woodlark Rift, Earth Planet. dating of zircon formed

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Young eclogite from the Greater Himalayan Sequence, Arun

Lu/Hf fractionation can be greater than that of Sm/Nd when garnet is a residual phase. This prop- erty creates some advantages for Lu-Hf over Sm-Nd for dating melt-extraction or crystal-accumulation processes involving garnet. First, the range of Table 2 Lu-Hf data, including replicate analyses Sample ‘ …

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Franciscan subduction off to a slow start: evidence from

Lu-Hf Dating: The Lu-Hf Isotope System. Jeff V ervoort* School of the Environment, W ashington State University, Pullman, W A, USA. Garnet Lu-Hf isochron. 176. Hf/ 177. Hf isochron. 176. Lu/ 177.

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Abstract: LU-HF GARNET GEOCHRONOLOGY AND - Confex

The results indicate that the Lu–Hf system provides a reliable tool for dating the wide range in P–T conditions of subduction‐zone metamorphism. Lawsonite dating, in particular, provides a reliable method by which to date low‐ T retrograde and prograde metamorphism in the absence of garnet.

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SUPPLEMENTARY DATA Sample characterization methods

Plešovice zircon — A new natural reference material for U–Pb dating; Hf isotopes; Bohemian Massif 1. Introduction Isotopic dating of accessory minerals by means of U-and Th-decay is the most precise and accurate technique for establishing the age of high-temperature events in low Lu/Hf and Yb/Hf values and it should also occurasmm

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Dating subduction-zone metamorphism with combined garnet

garnet Lu-Hf age is dominated by garnet cores and likely closely approximates the measured bulk Lu-Hf ages. A particularly poorly constrained value is the garnet rim width of sample AD43D.

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Radioisotope Decay Constants and Half-Lives: Lutetium-176

USA [email protected] INTRODUCTION Garnet could be the ultimate petrochronometer. Not only can you date it directly (with the addition of Lu–Hf to Sm–Nd as viable systems to date garnet (e.g., Duchene be coupled with each other and with direct dating, as described later in the ‘Chrono- of garnet’ CHRONO-Textures

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Garnet Geochronology: Timekeeper of Tectonometamorphic

The 2018 fifa world cup was the 21st fifa world cup, an international football lu-hf garnet dating tournament contested by the men's national teams of the member associations of fifa once every four years.It took place in russia from 14 june to 15 july 2018.It was the first world cup to be held in eastern europe, and the 11th time that it had

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Garnet: A Rock-Forming Mineral Petrochronometer

LU-HF GARNET CHRONOMETRY J.N. Connelly The Department of Geological Sciences The University of Texas at Austin Austin, Texas, USA, 78712 [email protected] ABSTRACT The prospects of garnet-based Lu-Hf geochronology returning accurate ages using conventional dissolution methods are limited by the likely incorporation of Hf-rich zircon

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Lu hf garnet dating - desire.vegaselitetraining.com

Lu/Hf ratios than those of garnet itself (most likely apatite). Their removal by SAL brings the 176Lu/177Hf ratios in garnets down by as much as 40%. This suggests that 176Lu/177Hf ratios of apparently pure garnets can be greatly overestimated due to the presence of such inclusions.

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Dating Ore Deposit Using Garnet U–Pb Geochronology

Application of Lu-Hf garnet dating to unravel the relationships between deformation, metamorphism and plutonism: An example from the Prince Rupert area, British Columbia Cornell University, Ithaca, NY 14853, USA), AC(School of Earth and Environmental Science, Washington State University, Pullman, WA 99164-2812, USA), AD Abstract The

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Lu-Hf Dating: The Lu-Hf Isotope System - ResearchGate

Using garnet to constrain the duration and rate of water-releasing metamorphic reactions during subduction: An example from Sifnos, Greece good choice for dating both the garnet core and rim. In some cases, Sm/Nd zonation in garnets does exist (e.g., Skora et al., 2009) so this although garnet Lu/Hf ages of 50–52 Ma from nearby Syros

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Application of Lu–Hf garnet dating to unravel the

Application of Lu–Hf garnet dating to unravel the relationships between deformation, metamorphism and plutonism: An example from the Prince Rupert area, British Columbia w w w. e l s ev i e r. c o m / l o c a t e / t e c t o Application of Lu–Hf garnet dating to unravel the relationships between deformation, metamorphism and plutonism

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Constraints on Lu‐Hf and Nb‐Ta systematics in globally

Moreover, due to high Lu/Hf and Sm/Nd ratios, garnet can be directly dated by Lu–Hf and Sm–Nd dating . However, the commonly low Lu and Hf contents in garnet constrain the application of Lu–Hf dating [ 20 ].

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Hf–Zr anomalies in clinopyroxene from mantle xenoliths

The Lu–Hf ages are diverse and reflect a progression of Mesoproterozoic metamorphic events. The oldest Lu–Hf garnet age determined in this study is 1463 ± 24 Ma for garnet within a kyanite schist exposed in the core-zone of the Boehls Butte metamorphic complex.

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Christine Siddoway | Colorado College - Academia.edu

Lu-Hf Dating: The Lu-Hf Isotope System Jeff Vervoort* School of the Environment, Washington State University, Pullman, WA, USA The Lu-Hf isotope system, with applications to geo- and

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Thomas Hoisch - Academia.edu

The inhomogeneous distribution of Lu and Hf in granitic rocks and their sensitivity to alteration during metamorphism create reproducibility problems for the Lu-Hf model. The initial or primordial ratio of Sm-Nd and Lu-Hf Dating Models 2: Radioactive Dating, Part 6. Acts & Facts. 44 (4). More Impact nonprofit ministry of the USA, all

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Lu–hf garnet geochronology: closure temperature relative

Combined U-Th-Pb monazite and Lu-Hf garnet ages from the Alpine Schist: Implications for the timing and duration of barrovian metamorphism in the Southern Alps, New Zealand. Testing the existence of the South Gobi Microcontinent: U-Pb zircon dating of tectonites within the East Gobi Fault Zone, southeastern Mongolia. (USA), Academia