Early Cambrian trace fossils at the northern margin of the Arabian Plate; Telbesmi Formation, Turkey
Authors
Huriye Demírcan
Department of Geological Research, General Directorate of Mineral Research and Exploration (MTA), 06520, Ankara
Semih Gürsu
Department of Geological Engineering, Muğla Sıtkı Koçman University, Muğla
Cemal Göncüoğlu
Department of Geological Engineering, Middle East Technical University, Ankara
Keywords:
Ichnnofossils, Telbesmi Formation, Early Cambrian, Derik (SE Turkey)
Abstract
The Telbesmi Formation, at the northern margin of the Arabian Plate, Turkey, is composed of alternating darkbrown, pinky-brown fluvial arkosic sandstone/mudstones with thin-bedded cherty limestones and channel conglomerates. The formation contains rare and poorly diversified trace fossils. The siltstone/sandstone beds of levels 1 and 2 of the formation yielded, however, a moderately diverse assemblage composed of: Cochlichnus isp., Palaeophycus isp., Planolites beverleyensis, Teichichnus isp. and ?Treptichnus rectangularis. This assemblage, made up of traces left by deposit feeding organisms, represents the Scoyenia ichnofacies. Treptichnus rectangularis and Palaeophycus isp., of the assemblage, can be considered markers for the base of the Cambrian in southeast Turkey.
