Abstract
The Buntsandstein (Lower Triassic) of the Western Eifel (Germany) is composed of sediments of different origin. These are alluvial-fan, fluviatile, aeolian, lacustrine and deltaic deposits. The fluviatile deposits are subdivided into channel-lag, bar and topstratum deposits. Alluvial-fan deposits occur in local depressions of the pre-Triassic morphology. Aeolian sediments build up the main part of the Middle Buntsandstein, locally interfingering with fluviatile deposits. Paleowind and paleocurrent directions generally coincide. The Upper Buntsandstein consists of fluviatile sediments only, which can be subdivided into well-developed small cyclothems (average thickness of sedimentation units 3–8 m) capped by paleosoils. The uppermost Buntsandstein is of deltaic origin; the ingression of the Lower Muschelkalk sea terminates the terrestrial Buntsandstein sequence.
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