Multiphase U-Pb geochronology of sintered breccias from the Steen River impact structure, Canada: mixed target considerations for a Jurassic-Cretaceous boundary event

Author
McGregor, Maree
Walton, Erin L.
McFarlane, Christopher R.M.
Spray, John G.
Faculty Advisor
Date
2020
Keywords
Steen River , LA-ICP-MS , U-Pb geochronology , apatite , zircon , titanite , shock metamorphism , impact-induced recrystallization , sintering , impact melt-bearing breccias , metamictization , Pb loss , Pb diffusion , Jurassic-Cretaceous boundary
Abstract (summary)
In situ U-Pb geochronology has been conducted using laser ablation inductively coupled mass spectrometry (LA-ICP-MS) on shocked and thermally metamorphosed apatite, titanite, and zircon grains from the Steen River impact structure, Canada.
Publication Information
McGregor M., Walton E.L., McFarlane C.R.M., and Spray J.G. (2020). Multiphase U-Pb geochronology of sintered breccias from the Steen River impact structure, Canada: Mixed target considerations. Geochimica et Cosmochimica Acta 274: 136-156. DOI: https://doi.org/10.1016/j.gca.2020.01.052
DOI
Notes
Item Type
Article
Language
English
Rights
All Rights Reserved