Unterschiede von Toneigenschaften in Tonstein der fränkischen Lias- und Doggerlandschaften und ihren Böden

Distinctions of Clay Properties in Claystone of the Franconian Lias-and Doggerlandscape and Their Soils Pelosols and Pseudogleys derived from the sediments of the Amaltheen Clay (lias δ), Posidonia Shale (lias δ) and Opalinus Clay (dogger æ) formations in the forelands of the Alb Mountains in Franconia were separated using 16 properties (seven textural and nine chemical properties, the latter of which indicate clay specific properties). Multivariate discriminant analysis was able to distinguish sediments from sediments, sediments from soils and soils from soils. Eight properties were important for discriminating the samples into several groups. Properties with the greatest discriminating quality were the effective buffering capacity for K (BCKe in mval/100 g soil and 100 g clay/M^1/2), the K-fixation (mg K/100 g soil and clay), and the labile K (mval K/100 g soil). The mobile K (ARo in M^1/2) was also an important property. The Pseudogleys were most significantly separated from the Amaltheen Clay and Opalinus Clay sediments. Furthermore, the Pelosols could be significantly separated from Amaltheen Clay and Opalinus Clay on one side and Posidonia Shale on the other. The statistically significant increase of the BCKe and the decrease of ARo as well as some X-ray diagrams suggest that in Pseudogleys derived from Amaltheen Clay and Opalinus Clay and in Pelosols derived from Posidonia Shale expandable forms of 2 : 1 minerals were formed from 10 A-minerals.