Geochemistry of the Cretaceous-Tertiary (K-T) boundary interval: south-central Saskatchewan and Montana
The Cretaceous-Tertiary (K-T) boundary interval in the Canadian Continental Drilling Program Cretaceous-Tertiary (K-T) Boundary Project Wood Mountain and Wood Mountain Creek core holes along with the Wood Mountain Creek and Rock Creek east A outcrop localities, south-central Saskatchewan, were analyzed using either neutron activation analysis or laser ablation - inductively coupled plasma - mass spectrometry. The claystone towards the base of the Landscape coal zone in the Wood Mountain core hole which coincides with a floristic extinction event was found to have enhanced iridium values, confirming it to be the boundary claystone. Four layers, sub-hackly, hackly, satiny, and laminated, in ascending stratigraphic order, recognizable as part of the boundary claystone in south-central Saskatchewan, are considered to be correlative to previously documented layering in midcontinental United States. Present results indicate both a uniqueness and possible common genesis of these layers. The hackly and satiny cla...