2020
DOI: 10.1007/s12665-020-08926-3
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Chemical weathering in Antarctica: an example of igneous rock particles in Big Lachman Lake sediments, James Ross Island

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Cited by 7 publications
(3 citation statements)
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“…Consistent with Vašinka et al (2020), strong consistency exists between the Plagioclase Index of Alteration (PIA) (Fedo et al 1995) and the CIA values of sediments, indicating that plagioclase, in particular the anorthite component, dominated chemical weathering under mostly oxic conditions, as evidenced by a strong positive correlation ( R 2 = 0.93) between the CIA and the Mafic Index of Alteration (MIA) (Babechuk et al 2014) values of the sediments, in particular lake sediments (Table II).…”
Section: Discussionsupporting
confidence: 89%
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“…Consistent with Vašinka et al (2020), strong consistency exists between the Plagioclase Index of Alteration (PIA) (Fedo et al 1995) and the CIA values of sediments, indicating that plagioclase, in particular the anorthite component, dominated chemical weathering under mostly oxic conditions, as evidenced by a strong positive correlation ( R 2 = 0.93) between the CIA and the Mafic Index of Alteration (MIA) (Babechuk et al 2014) values of the sediments, in particular lake sediments (Table II).…”
Section: Discussionsupporting
confidence: 89%
“…The presence of minor amounts of highly localized clay minerals along with comparable ICV and CIA values of the lake sediments are good indications of the low degree chemical weathering of the bedrocks that feed the watersheds of the lakes. Similarly to our results, Vašinka et al (2020) recently reported the low degree chemical weathering of volcanic rocks, particularly those rich in anorthite, contributing to the Big Lachman Lake sediments.…”
Section: Intensity Of Chemical Weatheringsupporting
confidence: 92%
“…and the Chemical Index of Alteration (CIA). This index is based on the alteration of feldspars, the release of alkali metals, and the accumulation of alumina in the reaction products [37]. The CIA is calculated based on the molar concentration of the oxides, but the CaO content combined with carbonates or phosphates have been excluded.…”
Section: Geochemical Indicesmentioning
confidence: 99%