Determination of aragonite trace element distribution coefficients from speleothem calcite–aragonite transitions

Abstract

Citation for published item:ssenurgD tFeF nd holzD hF nd tohumD uFF nd ghengD rF nd ystereD tF nd smmenhuserD eF nd ihterD hFuF nd r¤ gerD F nd tmiesonD FeF nd fldiniD tFFvF nd ro'mnnD hF nd freitenhD FpFwF @PHITA 9hetermintion of rgonite tre element distriution oe0ients from speleothem lite!rgonite trnsitionsF9D qeohimi et osmohimi tFD IWH F ppF QRUEQTUF Further information on publisher's website: 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-prot 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.

Climate variations of Central Asia on orbital to millennial timescales

“…Both sections had a length of approximately 10 mm. Further details of the method and evaluation procedure are reported in refs 55 and 56.…”

Nano‐Powdered Calcium Carbonate Reference Materials: Significant Progress for Microanalysis?

“…Some of them are very small in the 10–100 µm range and/or have closely spaced compositionally different layers. Laser ablation‐inductively coupled plasma‐mass spectrometry (LA‐ICP‐MS) has become a suitable technique for microanalysis of these materials (e.g., Wassenburg et al , Jochum et al , Jentzen et al , Leduc et al , Yang et al , Mertz‐Kraus et al , Hathorne et al . , Vetter et al , Caragnano et al , Schiebel and Hemleben , Weber et al ), but well‐characterised homogeneous reference materials (RMs) for calibration at the nanometre to micrometre scale are needed.…”

“…Some of them are very small in the 10-100 µm range and/or have closely spaced compositionally different layers. Laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) has become a suitable technique for microanalysis of these materials (e.g., Wassenburg et al 2016b, Jentzen et al 2018, Leduc et al 2014, Yang et al 2014, Mertz-Kraus et al 2009, Hathorne et al 2009, Vetter et al 2013, Caragnano et al 2014, Schiebel and Hemleben 2017, Weber et al 2018a), but well-characterised homogeneous reference materials (RMs) for calibration at the nanometre to micrometre scale are needed. For such purposes, different kinds of RMs were used, for example, the silicate glasses from the National Institute of Standards and Technology (NIST), geological glasses from the United States Geological Survey (USGS), the Max Planck Institute for Chemistry (MPI-DING) and synthetic or natural carbonates (USGS) (Jochum and Enzweiler 2014).…”

Aragonite–calcite veins of the ‘Erzberg’ iron ore deposit (Austria): Environmental implications from young fractures

“…these minor elements are readily incorporated into aragonite compared to the small Mg 2+ cation (B€ ottcher & Dietzel, 2010). Similarly, (prior) aragonite precipitation would also diminish the overall uranium concentration in aqueous solution based on the respective fractionation behaviour (Wassenburg et al, 2016) and might be the explanation for low to very low U contents measured in some erzbergite samples ( Table 1). Most of these hydrogeochemical mechanisms proposed are known to depend on water infiltration, flow routes and discharge, such that aqueous Mg/Ca increases related to prior CaCO 3 precipitation are typically favoured during overall dry environmental/aquifer conditions (Huang & Fairchild, 2001;Riechelmann et al, 2014;Bajo et al, 2017).…”

“…another proxy of meteoric palaeoprecipitation (cf. Wassenburg et al, 2016). Regarding potential palaeoclimate information from the erzbergite mineralogical composition and lamination, the stained Fe-rich particle accumulations probably represent increased mobilization during wet episodes, for example seasonal or multi-annual flushing events supported by the detrital nature of the stained layers.…”