40Ar/39Ar single crystal sanidine dates for the Lava Creek Tuff (member B)

40Ar/39Ar data collected with a Nu Instruments Noblesse multi-collector noble gas mass spectrometer equipped with four ETP ion counters and 60W CO2 laser at the University of Wisconsin-Madison. Ages are calculated relative to the Alder Creek Rhyolite sanidine with an age of 1.1860 ± 0.0016 Ma (Rivera et al., 2013). Samples were irradiated for five hours at the Oregon State University CLICIT facility.

在威斯康星大学麦迪逊分校，利用配备四个ETP离子计数器和60W CO2激光的Nu Instruments Noblesse多收集器稀有气体质谱仪收集的40Ar/39Ar数据。年龄计算以Alder Creek Rhyolite斑晶的1.1860 ± 0.0016百万年（Ma）为参照（Rivera等，2013年）。样品在俄勒冈州立大学CLICIT设施进行了五小时的辐照。