Mannville Group - Relationship To Other Units - Subunits - Central and Southern Alberta

Central and Southern Alberta

Subdivision Sub-unit Age Lithology Max
Thickness
Reference
Upper Upper Mannville marine shale and sandstone
Glauconitic Sandstone Early Cretaceous very fine to medium grained quartz sandstone with siderite and glauconite 35 m (110 ft)
Lower Mannville
Ostracod Beds Early Cretaceous Unit A: shale and fossiliferous limestone
Unit B: argillaceous limestone with ostracod fossils
Unit C: dark shale with siltstone and sandstone interbed
Unit D: fine to medium grained lithic calcareous sandstone with kaolinite and chert
40 m (130 ft)
Ellerslie Member Early Cretaceous Upper: fine grained sand with sandy shale and shaley sand lenses
Lower: medium grained quartz sand, siltstone, coal
40 m (130 ft)
30 m (100 ft)
Detrital Beds Early Cretaceous Chert pebbles, lithic sandstone, shale, siltstone 70 m (230 ft)
  • In southern Alberta, the Ellerslie Member is replaced by the Sunburst Member, Taber Sandstone and Cutbank Sandstone

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