“…Diverse geochemical and physical proxy records in speleothems on monthly-millennial time scales over different periods in the Quaternary have been reported (Bar-Matthews et al, 1997Perrette et al, 2000;Tan et al, 2002;Fairchild et al, 2006;Baker et al, 2007;Affek et al, 2008;Wang et al, 2008;Cheng et al, 2009;Zhou et al, 2009;Shen et al, 2010). d 18 O and d 13 C have been the most commonly used proxies (e.g., Dorale et al, 1998;Wang et al, 2001Wang et al, , 2005Wang et al, , 2008; Bar-Matthews et al, 2003;Cheng et al, 2009;Tan et al, 2010).…”