Geochronological techniques measure radioactive isotope systems in specific minerals, dating major tectonic events that affected those minerals and therefore source rocks feeding the sedimentary system.As a result detrital geochronology tends to produce several ‘populations’ of similar-aged minerals and these can be interpreted to provide highly diagnostic provenance information.Cathodoluminescence (CL) images can be collected from zircon grains using scanning electron microscopy (SEM) with the attached CL detector.
Different zones of a single zircon grains also often preserve different ages reflecting a complex thermal history that they have undergone (e.g.
inherited core and metamorphic overgrowth), adding valuable details to geological interpretations.
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We also offer bespoke dating of other mineral-isotope systems that may provide solutions to specific problems, including geochronological dating of igneous and metamorphic rocks.
Detrital zircon U-Pb geochronology is a powerful technique used for studies of sand and sandstone provenance.
As zircon is a resilient mineral that can survive through prolonged weathering, sedimentary transport, metamorphism and in some instances even mantle melting, its crystallisation age can be preserved through multiple sedimentary cycles, making zircon an ideal mineral for provenance studies, particularly in reworked sediments.Tags: Adult Dating, affair dating, sex dating