In-situ Lu-Hf geochronology of calcite

Simple item page
dc.contributor.authorSimpson, A.
dc.contributor.authorGlorie, S.
dc.contributor.authorHand, M.
dc.contributor.authorSpandler, C.
dc.contributor.authorGilbert, S.
dc.contributor.authorCave, B.
dc.date.issued2022
dc.descriptionPublished: 8 June 2022
dc.description.abstractThe ability to constrain the age of calcite formation is of great utility to the Earth science community, due to the ubiquity of calcite across a wide spectrum of geological systems. Here, we present the first in situ laser ablation inductively coupled tandem quadrupole mass spectrometry (LA-ICP-MS/MS) Lu–Hf ages for calcite, demonstrating geologically meaningful ages for iron oxide copper gold (IOCG) and skarn mineralisation, carbonatite intrusion, and low-grade metamorphism. The analysed samples range in age between ca. 0.9 and ca. 2 Ga with uncertainties between 1.7 % and 0.6 % obtained from calcite with Lu concentrations as low as ca. 0.5 ppm. The Lu–Hf system in calcite appears to be able to preserve primary precipitation ages over a significant amount of geological time, although further research is required to constrain the closure temperature. The in situ approach allows calcite to be rapidly dated while maintaining its petrogenetic context with mineralisation and other associated mineral processes. Therefore, LA-ICP-MS/MS Lu–Hf dating of calcite can be used to resolve the timing of complex mineral paragenetic sequences that are a feature of many ancient rock systems.
dc.description.statementofresponsibilityAlexander Simpson, Stijn Glorie, Martin Hand, Carl Spandler, Sarah Gilbert, and Brad Cave
dc.identifier.citationGeochronology, 2022; 4(1):353-372
dc.identifier.doi10.5194/gchron-4-353-2022
dc.identifier.issn2628-3719
dc.identifier.issn2628-3719
dc.identifier.orcidSimpson, A. [0000-0001-6029-0116]
dc.identifier.orcidGlorie, S. [0000-0002-3107-9028]
dc.identifier.orcidHand, M. [0000-0003-3743-9706]
dc.identifier.orcidSpandler, C. [0000-0003-2310-0517]
dc.identifier.orcidGilbert, S. [0000-0003-3259-7983]
dc.identifier.urihttps://hdl.handle.net/2440/139914
dc.language.isoen
dc.publisherCopernicus Publications on behalf of the European Geosciences Union
dc.relation.granthttp://purl.org/au-research/grants/arc/DP200101881
dc.rights© Author(s) 2022. This work is distributed under the Creative Commons Attribution 4.0 License.
dc.source.urihttps://doi.org/10.5194/gchron-4-353-2022
dc.titleIn-situ Lu-Hf geochronology of calcite
dc.typeJournal article
pubs.publication-statusPublished

Files

Collections

Geology & Geophysics publications