Cryptic excess argon in metamorphic biotite: Anomalously old 40Ar/39Ar plateau dates tested with Rb/Sr thermochronology and Ar diffusion modelling

2021/09/23 by E. Scibiorski, Elisabeth Scibiorski, Fred Jourdan +6
Earth and Planetary Sciences · #Geological and Geochemical Analysis #High-pressure geophysics and materials #earthquake and tectonic studies

paper · doi:10.1016/j.gca.2021.09.017

Citations

• Rb-Sr and K-Ar ages on minerals at temperatures of 300°–400° C from deep wells in the Larderello geothermal field (Italy)
• Closure temperature in cooling geochronological and petrological systems
• Diffusion of 40Ar in biotite: Temperature, pressure and compositional effects
• Diffusion of 40Ar in muscovite
• On the thermal stability of Rb-Sr and K-Ar biotite systems: Evidence from coexisting Sveconorwegian (ca 870 Ma) and Caledonian (ca 400 Ma) biotites in SW Norway
• Abbreviations for names of rock-forming minerals