The information on this page is a summary description. The full formal description is available here: Cottessen Member Abbreviation Parent unit Vaals Formation Child units Lithological description Age Thickness Area of occurrence Type locality Alternative names Authors Robaszynski, F., Dhondt, A.V. & Jagt, J.W.M. Date 01/01/2001 Cite as Robaszynski, F., Dhondt, A.V. & Jagt, J.W.M.,...
The information on this page is a summary description. The full formal description is available here: Saint-Vaast Chalk Formation Abbreviation SVA Parent unit Chalk group Child units Lithological description White togreyishchalk, containing clay minerals but notmarly, difficult to break. The lower part (“Craie de Saint-Vaast inférieure” auct.) contains sponges and grey to black flints but...
The information on this page is a summary description. The full formal description is available here: Trivières Chalk Formation Abbreviation TRI Parent unit Chalk group Child units Lithological description A white to greyish marly chalk without flints. A conglomerate, from a few cm to one m thick, generally marks the base containing hardground fragments, phosphatised...
The information on this page is a summary description. The full formal description is available here: Obourg Chalk Formation Abbreviation OBG Parent unit Chalk group Child units Lithological description A fine-grained white chalk, slightly greyer than the overlying Nouvelles Formation. In the northern part of the basin it contains a few dark black flints (used...
The information on this page is a summary description. The full formal description is available here: Merlin Member Abbreviation MER Parent unit Vert Galand Formation Child units Lithological description The Merlin Member corresponds to the traditional Fortes Toises. In the type area it could be observed in temporary and partial outcrops along the TGV line...
The information on this page is a summary description. The full formal description is available here: Haine Green Sandstone Group Abbreviation HNE Parent unit Child units Pommeroeul Greensand Formation, Harchies Formation, Catillon Formation, Barquegnies Formation, Bernissart Calcuridites Formation Lithological description Detriticfacies, more or less conglomeratic and glauconitic, with a siliceousopalinecement or with a carbonate cement,...
The information on this page is a summary description. The full formal description is available here: Pommeroeul Greensand Formation Abbreviation POM Parent unit Haine Green Sandstone Group Child units Lithological description Conglomerates of Palaeozoicrocks, coarse sands, fine sands and sandstonescolouredby grass green ferruginous clays (a very characteristic shade of green). A few levels contain lignites,...
The information on this page is a summary description. The full formal description is available here: Harchies Formation Abbreviation HAR Parent unit Haine Green Sandstone Group Child units Lithological description Alternation of “spongolites”, phosphatic conglomerates and glauconitic sands. Marine fauna is very poorly preserved. Age In the basal part of the Formation, Actinoceramus concentricus and...
The information on this page is a summary description. The full formal description is available here: Catillon Formation Abbreviation CAT Parent unit Haine Green Sandstone Group Child units Lithological description Glauconitic sands, more or less siliceousglauconites, marls with siliceous and phosphatic nodules, with numerous sponges. This formation is clearly less coarse-grained than the underlying Harchies...
The information on this page is a summary description. The full formal description is available here: Braquegnies Formation Abbreviation BRA Parent unit Haine Green Sandstone Group Child units Lithological description Levels with sandy glauconitic marls, conglomerates, sandstones and sands, occasionally common sponge remains. Ammonite and bivalve faunas are rich and diverse at certain levels. Age...
