Atom probe tomography: Development and application to the geosciences

SM Reddy, DW Saxey, WDA Rickard… - Geostandards and …, 2020 - Wiley Online Library
Atom probe tomography (APT) is an analytical technique that provides quantitative three‐
dimensional elemental and isotopic analyses at sub‐nanometre resolution across the whole …

A pressure-temperature phase diagram for zircon at extreme conditions

NE Timms, TM Erickson, MA Pearce, AJ Cavosie… - Earth-Science …, 2017 - Elsevier
Hypervelocity impact processes are uniquely capable of generating shock metamorphism,
which causes mineralogical transformations and deformation that register pressure (P) and …

Linking titanite U–Pb dates to coupled deformation and dissolution–reprecipitation

AC Moser, BR Hacker, GE Gehrels… - … to Mineralogy and …, 2022 - Springer
Titanite U–Pb geochronology is a promising tool to date high-temperature tectonic
processes, but the extent to and mechanisms by which recrystallization resets titanite U–Pb …

Apatite as an alternative petrochronometer to trace the evolution of magmatic systems containing metamict zircon

HC Yu, KF Qiu, CJ Hetherington, D Chew… - … to Mineralogy and …, 2021 - Springer
Obtaining reliable petrochronological and geochemical data from metamict zircon may be
challenging. Metamict zircon and crystalline apatite from the Meiwu granodiorite and its …

Zircon ages in granulite facies rocks: decoupling from geochemistry above 850° C?

BE Kunz, D Regis, M Engi - Contributions to Mineralogy and Petrology, 2018 - Springer
Granulite facies rocks frequently show a large spread in their zircon ages, the interpretation
of which raises questions: Has the isotopic system been disturbed? By what process (es) …

Direct age constraints on the magnetism of Jack Hills zircon

RJM Taylor, SM Reddy, DW Saxey, WDA Rickard… - Science …, 2023 - science.org
A potential record of Earth's magnetic field going back 4.2 billion years (Ga) ago is carried by
magnetite inclusions in zircon grains from the Jack Hills. This magnetite may be secondary …

[HTML][HTML] Time-resolved, defect-hosted, trace element mobility in deformed Witwatersrand pyrite

D Fougerouse, SM Reddy, CL Kirkland, DW Saxey… - Geoscience …, 2019 - Elsevier
The Pb isotopic composition of rocks is widely used to constrain the sources and mobility of
melts and hydrothermal fluids in the Earth's crust. In many cases, the Pb isotopic …

[HTML][HTML] Radiogenic Pb in xenotime trapped in nanoscale inclusions of apatite during fluid alteration

C Joseph, D Fougerouse, SM Reddy, HKH Olierook… - Chemical …, 2023 - Elsevier
This study focuses on the low-temperature mineralogical response of xenotime, a phosphate
mineral routinely used as a geochronometer, to fluid-assisted alteration. The studied …

Novel applications of FIB-SEM-based ToF-SIMS in atom probe tomography workflows

WDA Rickard, SM Reddy, DW Saxey… - Microscopy and …, 2020 - academic.oup.com
Atom probe tomography (APT) is used to quantify atomic-scale elemental and isotopic
compositional variations within a very small volume of material (typically< 0.01 µ m3). The …

Mechanisms of deformation-induced trace element migration in zircon resolved by atom probe and correlative microscopy

SM Reddy, A van Riessen, DW Saxey… - … et Cosmochimica Acta, 2016 - Elsevier
The widespread use of zircon in geochemical and geochronological studies of crustal rocks
is underpinned by an understanding of the processes that may modify its composition …