The information on this page is a summary description. The full formal description is available here: La Venne Formation Abbreviation VEN Parent unit Revin Group Child units Lithological description Heterogeneous unit characterised by the alternation of black slate and dark quartzite. The quartzite is sometimes very clayey and micaceous. In the middle part very thick...
The information on this page is a summary description. The full formal description is available here: La Chapelle Formation Abbreviation LCH Parent unit Child units Lithological description Formation subdivided into two members. The unnamed lower member (old: Rv2a), is an alternation of black quartzite in 1 to 4 m thick beds and thin bedded black...
The information on this page is a summary description. The full formal description is available here: La Gleize Formation Abbreviation GLE Parent unit Revin Group Child units Lithological description In the north: black slate and silty slate (called “quartzophyllade” in the older literature); the upper part contains sometimes dolomite nodules with cone-in-cone structures; the lower...
The information on this page is a summary description. The full formal description is available here: Illy Formation Abbreviation ILL Parent unit Child units Lithological description Black slate and silty slate (called “quartzophyllade” in the older literature), micaceous with not frequently thin sericite laminae; the middle and upper part of the formation show frequent alternations...
The information on this page is a summary description. The full formal description is available here: Salm Group Abbreviation Sm Parent unit Child units Jalhay Formation, Ottré Formation, Bihain Formation, Petites Tailles Formation Lithological description The group consists of three formations: from base to top: the Jalhay, Ottré and Bihain Fms. Age Thickness Area of...
The information on this page is a summary description. The full formal description is available here: Sautou Formation Abbreviation SAU Parent unit Child units Lithological description Thick beds of black pyritic quartzite of 5 to 10 m thick, separated by layers of coarse sandy and silty slate, or more rarely of graphitic fine slate or...
The information on this page is a summary description. The full formal description is available here: Fosses Formation Abbreviation FOS Parent unit Child units Lithological description From top to bottom green and dark green fine sandy shale, with trilobites and brachiopods; greywacke, calcareous shale with locally some limestone beds rich in brachiopods (Michot, 1934). Composed...
The information on this page is a summary description. The full formal description is available here: Jalhay Formation Abbreviation JAL Parent unit Salm Group Child units Lithological description Blue-green slate, sandstone and silty slate (called “quartzophyllade” in the older literature) subdivided into three members. The Solwaster Mbr (SLW, old: Sm1a): dark green-blue “quartzophyllade”, black...
The information on this page is a summary description. The full formal description is available here: Pouru-au-Bois Formation Abbreviation PAB Parent unit Child units Lithological description Subdivided into three members: the unnamed lower member (old: Rv5a): black slate, easily affected by microfolds (Beugnies, 1960); the unnamed middle member (old: Rv5b): some lenticular grey quartzite beds...
The information on this page is a summary description. The full formal description is available here: Génicot Formation Abbreviation GNC Parent unit Child units Lithological description Black shale, dark grey laminated siltstone and often thin beds of medium grey sandstone. Occasionally a conglomeratic sandstone bed occurs. Sometimes dark-coloured microbioturbations a few mm long (Chondrites sp.?)...
