Hydrological factors in the interpretation of stable isotopic proxy data present and past: a European perspective

Darling, W.G.

doi:10.1016/j.quascirev.2003.06.016

Cited by 157 publications

(128 citation statements)

References 103 publications

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“…2008) suggests that full glacial British precipitation could have been depleted by as much as 15 ‰ in 2 H with respect to modern waters. This is consistent with a δ 18 O composition of approximately −9.5 ‰ VSMOW for end-Pleistocene groundwater (Atkinson, 2004;Darling, 2004).…”

Section: A Calculating δ 18 O Of the Cementsupporting

confidence: 83%

Geochemical constraints on the origin of enigmatic cemented chalks, Norfolk, UK

et al. 2008

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-Very hard cemented chalk stacks and crusts found locally in the upper part of the Cretaceous Chalk of north Norfolk, UK, are related to solution features. The solution features, mainly pipes and caves, formed after deposition of the overlying Middle Pleistocene Wroxham Crag, probably by routing of sub-glacial, or glacial, melt-waters derived from late Pleistocene glaciers. New geochemical (particularly stable isotope) data shows that cementation of the chalks, although related spatially to the solution features, was not caused by glacier-derived waters. The carbon isotope composition of the chalk cements is typically around −9.5 ‰, indicative of biologically active soils. Moreover, the oxygen isotope compositions of the cements, around −5 ‰, are incompatible with water δ 18 O values much below −9 to −10 ‰ (which probably precludes isotopically negative glacier-derived water), as resulting palaeo-temperatures are below zero. Taken together, the isotope data suggest chalk cementation occurred under interglacial conditions similar to the present. Dissolved calcium carbonate for cementation came from dissolution of reworked chalk in overlying MIS 12 glacial tills.

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Section: A Calculating δ 18 O Of the Cementsupporting

confidence: 83%

Geochemical constraints on the origin of enigmatic cemented chalks, Norfolk, UK

et al. 2008

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“…(iii) Seasonal growth rate fluctuations potentially bias net proxy signals towards the season favourable to deposition (Baldini et al, 2008;Banner et al, 2007;Fairchild et al, 2006;Frisia et al, 2000;Mattey et al, 2008;Spötl et al, 2005). (iv) Growth rate variability may be related to climate signal modification by other processes, such as biomass change above the cave (e.g., Baldini et al, 2005) and surface and epikarst hydrology Bradley et al, 2010;Darling, 2004). Moreover, stalagmite growth rate may provide a proxy for surface or soil temperature (Genty et al, 2001), rainfall amount (Genty and Quinif, 1996), or vegetation changes (Baldini et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Reconstructing modern stalagmite growth from cave monitoring, local meteorology, and experimental measurements of dripwater films

Baker

Mattey

Baldini

2014

Earth and Planetary Science Letters

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. (2014) 'Reconstructing modern stalagmite growth from cave monitoring, local meteorology, and experimental measurements of dripwater lms.', Earth and planetary science letters., 392 . pp. 239-249. Further information on publisher's website:http://dx.doi.org/10.1016/j.epsl.2014.02.036Publisher's copyright statement: NOTICE: this is the author's version of a work that was accepted for publication in Earth and Planetary Science Letters. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be re ected in this document. Changes may have been made to this work since it was submitted for publication. A de nitive version was subsequently published in Earth and Planetary Science Letters, 392, 15 April 2014, 10.1016/j.epsl.2014 Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. AbstractInterpretations of high-resolution proxy datasets from stalagmites require support from longterm cave monitoring data and quantified changes in sample growth rate. One cave site for which the modern climate signal transfer systematics are relatively well characterised by cave monitoring is New St Michael's Cave, Gibraltar. This site provides a rare opportunity to reconstruct modern calcite growth, to link growth with the cave environment and local climate, and to test the sufficiency of existing growth rate theory on monthly to inter-annual timescales. Here, we use a numerical time-series growth rate model, driven by cave monitoring and local meteorological data, and the results of an experimental investigation into variation in dripwater film thickness as a function of stalagmite apex morphology to reconstruct the modern growth (AD 1951(AD -2004 of 'Gib04a', a stalagmite retrieved from New St Michael's Cave. Our experimental measurements demonstrate that dripwater film thickness decreases linearly with increasing stalagmite curvature and that the presence of millimetre-scale surface microtopography reduces film thickness by an order of magnitude. We identified changes in growth laminae curvature from a Gib04a cut section to determine film thickness variability through time and combined this with estimated dripwater [Ca 2+ ] and cave air pCO 2 seasonality to drive the model. Our reconstruction exhibits strong seasonality and tracks variability in calcite [Sr 2+ ], a trace metal whose incorporation into calcite is partially growth rate-controlled. Reconstructed growth also shows co-variation with seasonal changes in calc...

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“…The isotope composition of drinking water may depend on three factors: surface waters, ground waters and soil humidity (Darling 2004). The author also emphasized that the heaviest impact on the composition of surface and ground water was exerted by precipitation and suggested that the highest isotope variability characterises flowing watercourses (rivers), for which δ 18 O is modified with every consecutive tributary from a new territory.…”

Section: Discussionmentioning

confidence: 99%

“…In Poland there is only one station situated in Kraków-Wola Justowska, which has been measured the isotope composition of precipitation. Still, the use of the OIPC enables us to estimate δ 18 O w ratio for all locations selected for the present study (Darling 2004).…”

Section: Introductionmentioning

confidence: 99%

Oxygen stable isotopes variation in water precipitation in Poland – anthropological applications

Lisowska-Gaczorek

Cienkosz-Stepańczak

Szostek

2017

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AbstrAct:The main objective of oxygen isotope analysis is to determine the probable place of origin of an individual or the reconstruction of migration paths. The research are methodologically based on referencing oxygen isotope ratios of apatite phosphates (δ 18 O p ) to the range of environmental background δ 18 O, most frequently determined on the basis of precipitation. The present work is a response to the need for providing background for oxygen isotope studies on skeletons excavated in Poland. Currently there no monitoring of the isotope composition of precipitation water in Poland is conducted. For this reason, based on the data generated in the Online Isotopes In Precipitation Calculator (OIPC), a database was developed, containing δ 18 O levels in precipitation for locations in which exploration work was carried out in the archaeological fields from Poland. In total, 279 locations were analysed. The result of the data analysis was a complete isotope composition map for Poland with four zones distinguished by δ 18O w values. The observable differences in oxygen isotope composition of precipitation in Poland are sufficient to trace migrations of individuals and populations, although accurate only at the level of macroregions.

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Hydrological factors in the interpretation of stable isotopic proxy data present and past: a European perspective

Cited by 157 publications

References 103 publications

Geochemical constraints on the origin of enigmatic cemented chalks, Norfolk, UK

Geochemical constraints on the origin of enigmatic cemented chalks, Norfolk, UK

Reconstructing modern stalagmite growth from cave monitoring, local meteorology, and experimental measurements of dripwater films

Oxygen stable isotopes variation in water precipitation in Poland – anthropological applications

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