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2.6. Lillo Formation - Li


Authors: De Meuter & Laga (1976).

Description: grey, grey brown and light grey brown shelly sand, clayey in the lower part and with several shell layers; in the upper part gradual decrease of the clay content and the thick shell layers; in the uppermost part, gradual disappearance of the shells.

Stratotype: outcrop of the Tijsmanstunnel under the Kanaaldok between 3.00 m and 23.50 m depth.

Area: harbour district of Antwerp and the northern part of the Antwerp Campine; to the south of the Campine gradual transition in the Poederlee Formation.

Thickness: 23 m in the type locality; 25 m in the north of the Antwerp province, but increasing considerably just north of the state border in The Netherlands.

Members: the formation is divided in the Luchtbal Sands Mbr., the Oorderen Sands Mbr., the Kruisschans Sands Mbr., the Merksem Sands Mbr. and the Zandvliet Sands Mbr.

Age: Zanclean to Piacenzian.

Remarks: the formation is also discussed by Cogels (1874), de Heinzelin (1950a, 1950b, 1952, 1955a, 1955b, 1955c, 1963), de Heinzelin & Glibert (1957), Dumont (1839, 1850), Glibert (1957), Halet (1935b), Leriche (1912, 1927), Mourlon (1880), Vanden Broeck & Cogels (1877), Van Voorthuysen (1958), Vincent (1889).