J
John M. Hanchar
Researcher at Memorial University of Newfoundland
Publications - 124
Citations - 14313
John M. Hanchar is an academic researcher from Memorial University of Newfoundland. The author has contributed to research in topics: Zircon & Geology. The author has an hindex of 37, co-authored 112 publications receiving 11924 citations. Previous affiliations of John M. Hanchar include Argonne National Laboratory & George Washington University.
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Plesovice zircon : A new natural reference material for U-Pb and Hf isotopic microanalysis
Jirri Slama,Jirri Slama,Jirri Slama,Jan Košler,Daniel J. Condon,James L. Crowley,Axel Gerdes,John M. Hanchar,Matthew S.A. Horstwood,George A. Morris,Lutz Nasdala,Nicholas Norberg,Urs Schaltegger,Blair Schoene,Michael Tubrett,Martin J. Whitehouse +15 more
TL;DR: The Plesovice zircon as discussed by the authors has a concordant U-Pb age with a weighted mean Pb-206/U-238 date of 337.13 +/- 0.37 Ma (ID-TIMS, 95% confidence limits, including tracer calibration uncertainty).
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Atlas of Zircon Textures
TL;DR: In this paper, a selection of both the most typical, but also of the less common, features seen in zircon, categorized according to the different geological processes responsible for their formation are presented.
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Further characterisation of the 91500 zircon crystal
Michael Wiedenbeck,John M. Hanchar,William H. Peck,Paul J. Sylvester,John W. Valley,Martin J. Whitehouse,Andreas Kronz,Yuichi Morishita,Lutz Nasdala,Jens Fiebig,Ian A. Franchi,J.-P. Girard,Richard C. Greenwood,R. W. Hinton,Noriko T. Kita,Paul R.D. Mason,Marc D. Norman,M. Ogasawara,Philip M. Piccoli,Dieter Rhede,Hisao Satoh,B. Schulz-Dobrick,Øyvind Skår,Mj. Spicuzza,Kentaro Terada,Andrew G. Tindle,Shigeko Togashi,Torsten Vennemann,Q. Xie,Yong-Fei Zheng +29 more
TL;DR: In this article, the results from a second characterisation of the 91500 zircon, including data from electron probe microanalysis, laser ablation inductively coupled plasma-mass spectrometer (LA-ICP-MS), secondary ion mass spectrometry (SIMS), and laser fluorination analyses, were reported.
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Zircon zonation patterns as revealed by cathodoluminescence and backscattered electron images: Implications for interpretation of complex crustal histories
John M. Hanchar,Calvin F. Miller +1 more
TL;DR: Zircon exhibits an extraordinary memory as mentioned in this paper and its stability, durability, low solubility and low elemental diffusivities combine to preserve in it a record of most of the important events that have affected it, its host rocks, and the crust of which it is a part.
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Dating the India–Eurasia collision through arc magmatic records
TL;DR: In this article, a geochronological and multi-isotopic study on rocks from the upper crust of the Kohistan Paleo-Island Arc that formed in the equatorial part of the Neo-Tethys Ocean is presented.