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- W2028542800 endingPage "80" @default.
- W2028542800 startingPage "71" @default.
- W2028542800 abstract "Cosmogenic exposure dating has greatly enhanced our ability to define glacial chronologies spanning several global cold periods, and glacial boulder exposure ages are now routinely used to constrain deglaciation ages. However, exposure dating involves assumptions about the geological history of the sample that are difficult to test and yet may have a profound effect on the inferred age. Two principal geological factors yield erroneous inferred ages: exposure prior to glaciation (yielding exposure ages that are too old) and incomplete exposure due to post-depositional shielding (yielding exposure ages that are too young). Here we show that incomplete exposure is more important than prior exposure, using datasets of glacial boulder 10Be exposure ages from the Tibetan Plateau (1420 boulders), Northern Hemisphere palaeo-ice sheets (631 boulders), and present-day glaciers (208 boulders). No boulders from present-day glaciers and few boulders from the palaeo-ice sheets have exposure ages significantly older than independently known deglaciation ages, indicating that prior exposure is of limited significance. Further, while a simple post-depositional landform degradation model can predict the exposure age distribution of boulders from the Tibetan Plateau, a prior exposure model fails, indicating that incomplete exposure is important. The large global dataset demonstrates that, in the absence of other evidence, glacial boulder exposure ages should be viewed as minimum limiting deglaciation ages." @default.
- W2028542800 created "2016-06-24" @default.
- W2028542800 creator A5003372017 @default.
- W2028542800 creator A5024861787 @default.
- W2028542800 creator A5032728653 @default.
- W2028542800 creator A5066257467 @default.
- W2028542800 date "2011-02-01" @default.
- W2028542800 modified "2023-10-16" @default.
- W2028542800 title "Too young or too old: Evaluating cosmogenic exposure dating based on an analysis of compiled boulder exposure ages" @default.
- W2028542800 cites W1489089526 @default.
- W2028542800 cites W1523986350 @default.
- W2028542800 cites W1537957428 @default.
- W2028542800 cites W1865205371 @default.
- W2028542800 cites W1964583197 @default.
- W2028542800 cites W1965081522 @default.
- W2028542800 cites W1967465340 @default.
- W2028542800 cites W1968042449 @default.
- W2028542800 cites W1970017877 @default.
- W2028542800 cites W1971568488 @default.
- W2028542800 cites W1971620194 @default.
- W2028542800 cites W1975350041 @default.
- W2028542800 cites W1976282952 @default.
- W2028542800 cites W1977146972 @default.
- W2028542800 cites W1977367259 @default.
- W2028542800 cites W1981175426 @default.
- W2028542800 cites W1983742724 @default.
- W2028542800 cites W1985357586 @default.
- W2028542800 cites W1987112188 @default.
- W2028542800 cites W1991470150 @default.
- W2028542800 cites W1993554851 @default.
- W2028542800 cites W1994214988 @default.
- W2028542800 cites W1994588550 @default.
- W2028542800 cites W1995657353 @default.
- W2028542800 cites W1996914983 @default.
- W2028542800 cites W1997917137 @default.
- W2028542800 cites W2000266172 @default.
- W2028542800 cites W2001427327 @default.
- W2028542800 cites W2002473398 @default.
- W2028542800 cites W2004432691 @default.
- W2028542800 cites W2005035365 @default.
- W2028542800 cites W2006103490 @default.
- W2028542800 cites W2007510747 @default.
- W2028542800 cites W2007760173 @default.
- W2028542800 cites W2009103109 @default.
- W2028542800 cites W2009425598 @default.
- W2028542800 cites W2009575187 @default.
- W2028542800 cites W2009851741 @default.
- W2028542800 cites W2011546530 @default.
- W2028542800 cites W2013217007 @default.
- W2028542800 cites W2013360735 @default.
- W2028542800 cites W2013809830 @default.
- W2028542800 cites W2014741586 @default.
- W2028542800 cites W2017307427 @default.
- W2028542800 cites W2017931382 @default.
- W2028542800 cites W2018137217 @default.
- W2028542800 cites W2022155332 @default.
- W2028542800 cites W2023233004 @default.
- W2028542800 cites W2023344243 @default.
- W2028542800 cites W2025238630 @default.
- W2028542800 cites W2034621827 @default.
- W2028542800 cites W2035333480 @default.
- W2028542800 cites W2038265449 @default.
- W2028542800 cites W2038577130 @default.
- W2028542800 cites W2040714581 @default.
- W2028542800 cites W2041079962 @default.
- W2028542800 cites W2041761084 @default.
- W2028542800 cites W2042332903 @default.
- W2028542800 cites W2043720424 @default.
- W2028542800 cites W2044954934 @default.
- W2028542800 cites W2046524990 @default.
- W2028542800 cites W2047643658 @default.
- W2028542800 cites W2051508347 @default.
- W2028542800 cites W2056870263 @default.
- W2028542800 cites W2057728569 @default.
- W2028542800 cites W2060263542 @default.
- W2028542800 cites W2062237254 @default.
- W2028542800 cites W2063155650 @default.
- W2028542800 cites W2063887730 @default.
- W2028542800 cites W2066922084 @default.
- W2028542800 cites W2069669242 @default.
- W2028542800 cites W2070504242 @default.
- W2028542800 cites W2071128995 @default.
- W2028542800 cites W2071228337 @default.
- W2028542800 cites W2071876168 @default.
- W2028542800 cites W2074568669 @default.
- W2028542800 cites W2075621105 @default.
- W2028542800 cites W2075782283 @default.
- W2028542800 cites W2076338628 @default.
- W2028542800 cites W2077126986 @default.
- W2028542800 cites W2077441364 @default.
- W2028542800 cites W2077533209 @default.
- W2028542800 cites W2077655601 @default.
- W2028542800 cites W2078878584 @default.
- W2028542800 cites W2080461854 @default.
- W2028542800 cites W2082417753 @default.
- W2028542800 cites W2083240113 @default.
- W2028542800 cites W2083264254 @default.
- W2028542800 cites W2083953706 @default.