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Stratigraphy
Irben Formation
Belongs toLower Cambrian (old nomenclature)
Typelithostratigraphy
RankFormation
Scoperegional
Statusformal standard
AuthorMens & Pirrus
Year1972
Age (Ma)Vērgale Stage
Index
Cm2ir
Alt. index
Ca1ir
Alt. indexꞒ1ir
Date added2012-10-16
Date changed2022-11-18
Locality
Type
From (m)
To (m)
Reference
Remarks
Pavilosta 51 borehole
holostratotype
13291387Lieldiena & Fridrihsone, 1968
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