Age intercalibration of 40Ar/39Ar sanidine and chemically distinct U/Pb zircon populations from the Alder Creek Rhyolite Quaternary geochronology standard

40Ar/39Ar dating of Glacial Termination VI: constraints on the duration of Marine Isotopic Stage 13

“…These latter eight age determinations were measured using older calibrations for the Fish Canyon Tuff sanidine (FCs) and Alder Creek Rhyolite sanidine (ACs) 2, 16, 24 . Several recent studies have indicated that the age of the Alder Creek Rhyolite sanidine is ~1.185–1.186 Ma (refs 30–32). Thus, we have recalculated the eight published ages using recent standard age calibrations (i.e.…”

New toxodontid (Notoungulata) from the Early Miocene of Mendoza, Argentina

“…U-Pb geochronology and trace element analysis by LA-ICPMS followed the methods described in Rivera et al (2013) using a ThermoElectron X-Series II quadrupole ICPMS and a New Wave Research UP-213 Nd:YAG UV (213 nm) laser ablation system. In-house analytical protocols, standard materials, and data reduction software were used for acquisition and calibration of U-Pb dates and a suite of high field strength elements (HFSE) and rare earth elements (REE).…”

U-Pb zircon age of the Krásné Loučky tuffite: the dating of Visean flysch in the Moravo-Silesian Paleozoic Basin (Rhenohercynian Zone, Czech Republic)

“…Ab lated ma te rial was car ried by a 1.2 L/min He gas stream to the 0.8 L/min nebulizer flow of the plasma. Specific analyte dwell times, back ground sub trac tion, el e men tal and iso to pic cal i bra tion meth ods, and er ror prop a ga tion al gorithms are de scribed in Rivera et al (2013). Quoted un cer tainties on the iso to pic ra tios and dates in the data ta ble are based upon an a lyt i cal count ing sta tis tics for the pur pose of intercomparison of dates in our screen ing study.…”