Gladstone Formation
The Gladstone Formation is a stratigraphic unit of Early Cretaceous ( Aptian ) age in the Western Canada Sedimentary Basin . 
<triplet> Gladstone Formation <subj> stratigraphic <obj> instance of <triplet> Early Cretaceous <subj> Aptian <obj> has part <triplet> Aptian <subj> Early Cretaceous <obj> part of