An evaluation of geochemical weathering indices in loess–paleosol studies

Geochemical properties of the Late Pleistocene loess-soil sequence in Dankowice (Niemcza-Strzelin Hills)

“…A tremendous amount of various indices is proposed (e.g. Duzgoren-Aydin et al 2002, Price, Velbel 2003, Bahlburg, Dobrzinski 2011, Buggle et al 2011. Among them, the authors of this study have chosen six that, in their opinion, are the best for characterizing the intensity of chemical weathering.…”

“…CIA values calculated for loess and presented in the literature are in the range of 50 to 75 (e.g. Gallet et al 1996, Łącka et al 2007, Ujvari et al 2008, Buggle et al 2011.…”

“…CPA -(chemical proxy of alteration - Buggle et al 2011;previously proposed by Cullers (2000) as CIW'), the coefficient expressed in molar proportions, calculated by the following formula:…”

Cation exchange capacity of loess and overlying soil in the non-carbonate loess sections, North-Western Croatia

“…This loess area continues eastwards to neighboring Vojvodina, Serbia, with the well documented paleoclimatic record of the Batajnica loess sequences [12,13] as one of the most complete records of the Middle and Late Pleistocene climate variations in the region. The loess deposits have been described in the Carpathian area (Romania, Ukraine) [13,14], as well as in Hungary, where chemical weathering in the last 800 ka was investigated [15] but also the rate of the atmospheric dust deposition in the Pleistocene was calculated [16].…”

Dél-dunántúli és kelet-horvátországi lösz-paleotalaj szelvények paleoökológiai rekonstrukciója malakológiai és üledéktani adatok segítségével

“…A főelemek aránya és a mállás közt is vannak összefüggések, melyek a különböző elemek arányaiból adódhatnak. A fő viszonyítási alap általában az alumínium (Nesbitt & Young, 1989;Gallet et al, 1996Gallet et al, , 1998Hum, 1998;Jahn et al, 2000;Buggle et al, 2011;Gocke et al, 2014), de emellett számos más hányados is használható. E dolgozatban a mállottság mérésére a K/Na és a Ca/Mg hányadosokat alkalmaztuk, de utóbbi hányados a karbonátok szerkezetére, a kalcit/dolomit arányra is utalhat (Hum, 1998;Jeong et al, 2011;Wimpenny et al, 2014).…”