ABSTRACT Application of calibrated Schmidt-hammer surface-exposure dating (SHD) to the run-out debris of a rock avalanche at Alstadfjellet, Valldalen, southern Norway, has yielded ages that are consistent within uncertainties with terrestrial cosmogenic 10Be surface-exposure ages for the debris. SHD calibration was based on young and old control sites that were, respectively, recent road cuts / rockfall boulders of known age, and Younger Dryas moraines for which 10Be ages had been obtained. Three SHD calibration equations were generated based on different correction factors for the 10Be ages from the moraines. The SHD ages (10.3 ± 0.59–11.1 ± 0.64 ka) for the run-out debris are from 1.1 ka to 1.3 ka older than the corresponding 10Be ages (9.2 ± 0.7–9.8 ± 0.7 ka). In addition, the former ages have a precision of 1.18–1.28 ka (95% confidence intervals) as opposed to 2.8 ka (2σ range) for the latter ages. This work demonstrates that calibrated SHD can be of comparable accuracy to and may have improved precision over 10Be ages, and should be given greater consideration and prominence in Quaternary dating studies.

中文翻译：

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挪威南部瓦尔达伦 Alstadfjellet 早期全新世岩石雪崩的比较数值表面暴露年龄测年（10Be 和施密特锤）

摘要 将校准的施密特-汉默表面暴露测年 (SHD) 应用于挪威南部瓦尔达伦 Alstadfjellet 的一次岩石雪崩碎片，得出的年龄与陆地宇宙成因 10Be 表面暴露年龄的不确定性一致。碎片。SHD 校准基于年轻和年老的控制地点，这些地点分别是已知年龄的近期道路切割/落石巨石，以及已获得 10Be 年龄的 Younger Dryas 冰碛。根据冰碛 10Be 年龄的不同校正因子生成了三个 SHD 校准方程。流出碎片的 SHD 年龄 (10.3 ± 0.59–11.1 ± 0.64 ka) 比相应的 10Be 年龄 (9.2 ± 0.7–9.8 ± 0.7 ka) 早 1.1 ka 到 1.3 ka。此外，前年龄的精度为 1.18–1。28 ka（95% 置信区间），而后者的 2.8 ka（2σ 范围）。这项工作表明，校准的 SHD 可以与 10Be 年龄相媲美，并且可能具有更高的精度，并且应该在第四纪测年研究中给予更多的考虑和突出。