The tidal character of the Formation of Tegelen in northern Belgium

Abstract

In northern Belgium a fining upward sequence in the Campine clays and sands (Formation of Tegelen) has been studied. Thinly interlayered sediments of fine sand and clay are overlaid by two claylayers with an intercalated peat-layer. In the sand-clay alternations small scale current ripples with opposed high-angle cross lamination indicate tidal movements. Ebb and flood ripples, covered with mud, point to subtidal deposition. The absence of bioturbation and the presence of fresh water peat indicate a fresh or brackish subtidal (lagoonal) depositional environment.