Welcome to the TIMS laboratory
The Princeton radiogenic isotope geoscience lab was completed in the summer of 2011 and took shipment of a IsotopX PhoeniX62 Thermal Ionization Mass Spectrometer (TIMS) in late September 2011. Following months of cleaning and blank measurement, we began doing high-precision U-Pb geochronology on zircons and other accessory minerals with sub-picogram Pb blanks, which is currently the focus of the lab's work. Please check out the publications from our group to see what we've been working on. We also now have received another PhoeniX62, in spring 2019, which is equipped with ATONA amplifier boards, which are specialized for both ultra-low as well as high intensity Faraday measurements. We are currently testing those to see what we can do with small U-Pb measurements.
TIMS geochronology is combined with available analytical equipment within the department of Geosciences, such as the ICP-MS lab run by Prof. Higgins, and a plethora of mineral separation and imaging facilities available within the department and on campus, including scanning electron microscopes (hosted at PRISM) capable of cathodoluminescence imaging quantitative geochemical characterization.
U-Pb constraints on pulsed eruption of the Deccan Traps across the end-Cretaceous mass extinction
The arc of the Snowball: U-Pb dates constrain the Islay anomaly and the initiation of the Sturtian glaciation
Constraining the Timing and Amplitude of Early Serpukhovian Glacioeustasy With a Continuous Carbonate Record in Northern Spain
GZ7 and GZ8 – Two Zircon Reference Materials for SIMS U-Pb Geochronology
A New Workflow to Assess Emplacement Duration and Melt Residence Time of Compositionally Diverse Magmas Emplaced in a Sub-volcanic Reservoir