2015
DOI: 10.1016/j.quascirev.2015.06.016
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Great Basin hydrology, paleoclimate, and connections with the North Atlantic: A speleothem stable isotope and trace element record from Lehman Caves, NV

Abstract: a b s t r a c tWe present a record of speleothem stable isotope (d 18 O, d 13 C) and trace element (Mg/Ca, Sr/Ca) variations from Lehman Caves, Nevada for an interval of time (139e128 ka) that encompasses the penultimate glacial termination, Termination II (T-II). Additional growth phases provide data from about 123 ka, a time that correlates with Marine Isotope Stage (MIS) 5e, and about 84 ka and between 82 and 81 ka (MIS 5a). Chronologies from two new stalagmites are anchored by thirty-six uraniumethorium da… Show more

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Cited by 25 publications
(24 citation statements)
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“…lower δ 234 U values. Overall, a negative correlation between δ 234 U 0 values and P-E is observed in subaerial speleothems from the SW United States (Cross et al, 2015;Denniston et al, 2007;Shakun et al, 2011;Lachniet et al, 2011Lachniet et al, , 2014. Conversely, δ 234 U 0 recorded in DH and DH2 calcite (subaqueously deposited) demonstrates a positive correlation with regional P-E. Our results clearly demonstrate that previously described interpretation of speleo them δ 234 U 0 does not universally apply to all depositional settings.…”
Section: Link To Regional Hydroclimatesupporting
confidence: 66%
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“…lower δ 234 U values. Overall, a negative correlation between δ 234 U 0 values and P-E is observed in subaerial speleothems from the SW United States (Cross et al, 2015;Denniston et al, 2007;Shakun et al, 2011;Lachniet et al, 2011Lachniet et al, , 2014. Conversely, δ 234 U 0 recorded in DH and DH2 calcite (subaqueously deposited) demonstrates a positive correlation with regional P-E. Our results clearly demonstrate that previously described interpretation of speleo them δ 234 U 0 does not universally apply to all depositional settings.…”
Section: Link To Regional Hydroclimatesupporting
confidence: 66%
“…The timing and duration of elevated DH2 δ 234 U 0 is coincident with periods of elevated lake levels (e.g., Ku et al, 1998;Bacon et al, 2006;Benson et al, 2013;McGee et al, 2012;Oviatt, 1997) and increased vadose-zone infiltration (Maher et al, 2014;Cross et al, 2015) recorded in a diverse array of archives across the wider SW United States. Curiously, however, the interpretation of δ 234 U 0 recorded in DH2 speleothems is opposite to the interpretation of δ 234 U 0 recorded in subaerial speleothems in this region (e.g., Cross et al, 2015;Denniston et al, 2007;Shakun et al, 2011;Lachniet et al, 2011Lachniet et al, , 2014, and thus merits discussion. The mechanisms controlling the δ 234 U in subaerially formed speleothems (i.e., dripstones) are attributed to the frequency and amount of surface recharge (Cross et al, 2015 and references therein).…”
Section: Link To Regional Hydroclimatementioning
confidence: 99%
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“…Development of multi-proxy speleothem records from WNA that are of sufficient resolution and with sufficient age control to document variations on multi-annual to multi-decadal timescales will allow investigation of the stationarity of these patterns through time and under different boundary conditions. with insufficient overlap with the deglacial period: Minnetonka Cave (Lundeen et al, 2013); Reeds Cave (Serefiddin et al, 2004); Goshute Cave (Denniston et al, 2007); Lehman Caves (Steponaitis et al, 2015;Cross et al, 2015); Crystal Cave (McCabe-Glynn et al, 2013); Carlsbad Caverns (Railsback et al, 2015;Brook et al, 2006); Natural Bridge Cavern . Table 3.…”
Section: Discussionmentioning
confidence: 99%
“…The degree of δ 234 U changes is a response to hydrological variation (Hellstrom & McCulloch, 2000) suggesting that sites with similar δ 234 U have comparable plumbing. These changes could occur from seasonal cessation of dripping, where winter season drip rates were more important than summer season, or they could result simply from drier/wetter annual periods (Polyak et al, 2012;Cross et al, 2015). Th isotope values for WBC1 drip waters are also included in Fig.…”
Section: Elemental Concentrations and U-series Valuesmentioning
confidence: 99%