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Zircon Petrochronology: Applications to Magmatic and Metamorphic Processes and Crustal...
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Zircon Petrochronology: Applications to Magmatic and Metamorphic Processes and Crustal Evolution

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Mineral Geochemistry and Geochronology".

Deadline for manuscript submissions: closed (20 September 2021) | Viewed by 5458

Special Issue Editors

Dr. Jeffrey Marsh

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Guest Editor
Mineral Exploration Research Centre, Harquail School of Earth Sciences, Laurentian University, Sudbury, ON P3E 2C6, Canada
Interests: U-Pb geochronology; petrology; geochemistry
Dr. Ben Frieman

E-Mail Website
Guest Editor
Mineral Exploration Research Centre, Harquail School of Earth Sciences, Laurentian University, Sudbury, ON P3E 2C6, Canada
Interests: Archean tectonics; isotope geochemistry; structural geology
Dr. David Mole

E-Mail
Guest Editor
Mineral Exploration Research Centre, Harquail School of Earth Sciences, Laurentian University, Sudbury, ON P3E 2C6, Canada
Interests: Archean tectonics; isotope geochemistry; geochronology; crustal evolution; Archean volcanism

Special Issue Information

Zircon has been the premier U-Pb geochronometer for over five decades, offering one of the most robust and precise methods of dating geological processes. More recently, zircon trace element composition has been increasingly utilized as a recorder of its paragenetic chemical environment and thermal conditions, characteritics which may be lost in the host rock mineralogy due to subsequent recrystallization and alteration or the detrital nature of the zircon. The hafnium isotope composition of zircon also enables evaluation of the parent magma genesis and provides insight into the secular evolution of crust–mantle interactions. With the advancement of in situ analytical methods, an entire U-Pb-TE-Hf dataset can be extracted from the same micron-scale volume of zircon, and commonly from multiple distinct domains within a single grain. In this issue, we invite contributions highlighting novel applications of coupled zircon age and compositional data to complex geological research questions, as well as advancements in analytical methodology that expand the applicability of zircon data.

Dr. Jeffrey Marsh
Dr. Ben Frieman
Dr. David Mole
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Minerals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • zircon
  • petrochronology
  • trace elements
  • lutetium–hafnium
  • geochemical proxies

Published Papers (2 papers)

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Research

28 pages, 12585 KiB  
Article
Lamprophyre as the Source of Zircon in the Veneto Region, Italy
by Daria Zaccaria, Noemi Vicentini, Maria Grazia Perna, Gianluigi Rosatelli, Victor V. Sharygin, Emma Humphreys-Williams, Will Brownscombe and Francesco Stoppa
Minerals 2021, 11(10), 1081; https://doi.org/10.3390/min11101081 - 30 Sep 2021
Cited by 2 | Viewed by 2004
Abstract
Discrete zircons, up to 9 mm in length, occur in alluvial deposits from the Veneto area. They are likely derived from the disaggregation of lamprophyric rocks belonging to a regional, pervasive dyke-swarm. Zircon and REE phases occur in both alkaline lamprophyres and connate [...] Read more.
Discrete zircons, up to 9 mm in length, occur in alluvial deposits from the Veneto area. They are likely derived from the disaggregation of lamprophyric rocks belonging to a regional, pervasive dyke-swarm. Zircon and REE phases occur in both alkaline lamprophyres and connate calcite-bearing felsic lithics and their debris in lamprophyre breccia. We present 36 new complete U–Pb and trace element analyses of zircons and associated inclusions. We used a statistical approach on a larger dataset using new and literature data to evaluate the confidence figure to give an estimation of age of zircons. Inclusions suggest a genetic link with an S–CO2–ZrO–BaO–SrO–CaO-rich fluid/melt possibly associated with carbonate-rich alkaline parental magma and a metasomatised mantle source. This paper confirms the importance of calcite–syenite and lamprophyre genetic link and zircon magmatic origin, in contrast with hydrothermal and metamorphic zircons. U–Pb dating by LA-ICP-MS provides time constrains (40.5–48.4 Ma, Lutetian), consistent with the age of the alkaline magmatic event. Trace element data indicate a link to anorogenic magmatism associated with mantle upwelling. Complex zoning is highlighted by cathodoluminescence images. The Veneto zircons are helpful for regional geological information and may have commercial potential as a critical resource for green technologies. Full article
(This article belongs to the Special Issue Zircon Petrochronology: Applications to Magmatic and Metamorphic Processes and Crustal Evolution)
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19 pages, 5093 KiB  
Article
Tracking 40 Million Years of Migrating Magmatism across the Idaho Batholith Using Zircon U-Pb Ages and Hf Isotopes from Cretaceous Bentonites
by Jeffrey S. Hannon, Craig Dietsch, Warren D. Huff and Davidson Garway
Minerals 2021, 11(9), 1011; https://doi.org/10.3390/min11091011 - 17 Sep 2021
Cited by 2 | Viewed by 2071
Abstract
Cretaceous strata preserved in Wyoming contain numerous large bentonite deposits formed from the felsic ash of volcanic eruptions, mainly derived from Idaho batholith magmatism. These bentonites preserve a near-continuous 40 m.y. chronology of volcanism and their whole-rock and mineral chemistry has been used [...] Read more.
Cretaceous strata preserved in Wyoming contain numerous large bentonite deposits formed from the felsic ash of volcanic eruptions, mainly derived from Idaho batholith magmatism. These bentonites preserve a near-continuous 40 m.y. chronology of volcanism and their whole-rock and mineral chemistry has been used to document igneous processes and reconstruct the history of Idaho magmatism as emplacement migrated across the Laurentian margin. Using LA-ICP-MS, we analyzed the U-Pb ages and Hf isotopic compositions of nearly 700 zircon grains from 44 bentonite beds from the Bighorn Basin, Wyoming. Zircon populations contain magmatic autocrysts and antecrysts which can be linked to the main pulses of the Idaho batholith and xenocrysts ranging from approx. 250 Ma to 1.84 Ga from country rocks and basement source terranes. Initial εHf compositions of Phanerozoic zircons are diverse, with compositions ranging from −26 to nearly +12. Based on temporal trends in zircon ages and geochemistry, four distinct periods of plutonic emplacement are recognized during the Mid- to Late Cretaceous that follow plutonic emplacement across the Laurentian suture zone in western Idaho and into western Montana with the onset of Farallon slab shallowing. Our data demonstrate the utility of using zircons in preserved tephra to track the regional-scale evolution of convergent margins related to terrane accretion and the spatial migration of magmatism related to changes in subduction dynamics. Full article
(This article belongs to the Special Issue Zircon Petrochronology: Applications to Magmatic and Metamorphic Processes and Crustal Evolution)
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