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The Reingrabener Schiefer (other names Reingraben Shales, „Halobienschiefer“) is a lithostratigraphic unit, often described as independent geologic formation, or as a member of Lunz Formation. [1] Reingraben shales are represented by black-brown or black, hard clayey shales and marly shales. Often contains spherosiderite nodules. [2]
The Posidonia Shale (German: Posidonienschiefer, also called Schistes Bitumineux in Luxembourg) geologically known as the Sachrang Formation, is an Early Jurassic (Early to Late Toarcian) geological formation in Germany, northern Switzerland, northwestern Austria, southern Luxembourg and the Netherlands, including exceptionally well-preserved complete skeletons of fossil marine fish and reptiles.
The Kupferschiefer (German for Copper Shale, Copper Schist or Copper Slate) [1] [2] or Kupfermergel (Copper Marl), (T1 or Z1) [3] is an extensive and remarkable sedimentary unit in Central Europe.
The Hesseltal Formation or Blackcoloured Formation is a Late Cretaceous (late Cenomanian to early Turonian) geological formation from northern Germany. It consists of lithified marls and limestone , with a unique series of black shales deposited in anoxic conditions during the Cenomanian-Turonian boundary event .
The San Pedro and Furada Formations are up to 300 metres thick and consists of shale and iron bearing sandstone interbedded, These are from Wenlock Ludlow and Lower Gedinian times. In the Devonian Period deposition occurred on the western side, with dolomite, argillaceous limestone , marl and shale from the Raneces Complex or La Vid Formation.
This Asbian to Brigantian age formation varies from 45m to 80m thick and consists largely of sandstones and shales with lesser amounts of siltstone and limestone. From its top downwards, it is divided into the Corry, Sheena Shale, Glenkeel, Doobally Sandstone, Drummangarvagh, Lugasnaghta, Sraduffy, Larkfield and Tullyskeherny members.
The Alum Shale Formation (also known as alum schist and alum slate) is a formation of black shale of Miaolingian (Middle Cambrian) to Tremadocian (Lower Ordovician) in age found predominantly in southern Scandinavia. [1] [2] It is shale or clay slate containing pyrite.
The known occurrence of this rock is a graptolitic argillite of the Türisalu Formation in northern Estonia and northwest Russia. [ 1 ] [ 2 ] It is correlated with Swedish alum shale being its younger facial eastward continuation, and both being a part of the Baltoscandic Cambrian - Ordovician black shale, together with black shales in the Oslo ...