Geochemistry on smectites in sediment cores CRP-1 and CRP-2 from the Ross Sea, Antarctica, supplement to: Setti, Massimo; Marinoni, L; Lopez-Galindo, A; Delgado-Huertas, Antonio (2000): Compositional and morphological features of the smectites of the sediments of CRP-2/2A, Victoria Land Basin, Antarctica. Terra Antartica, 7(4), 581-587

Massimo Setti, L Marinoni, A Lopez-Galindo & Antonio Delgado-Huertas
TEM (transmission electron microscopy) observations and microanalyses on smectite microparticles in the sediments of the CRP-2A core were carried out to determine their origin (authigenic or detrital) and the source rocks. Smectites are dioctahedral and are Fe-rich members of the nontronite-beidellite series. They generally display both flaky and hairy shapes, but no large compositional difference between the two forms was observed. Flaky smectites are detrital while hairy smectites probably formed in situ through the reorganisation...
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