--> Foraminiferal, Sedimentological and Ichnological Analysis of Early Cretaceous Sediments (Scotian Shelf), by Grant D. Wach, Flavia Fiorini, and David Scott; #90052 (2006)
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Foraminiferal, Sedimentological and Ichnological Previous HitAnalysisNext Hit of Early Cretaceous Sediments (Scotian Shelf)

Grant D. Wach, Flavia Fiorini, and David Scott
Dalhousie University, Halifax, NS

This study describes the foraminiferal, sedimentological and ichnological Previous HitanalysisNext Hit on samples collected from the early Cretaceous Lower Logan Canyon Formation cored interval from the Cohasset A-52 corresponding to a sea level lowstand. The Cohasset A-52 well is located on the Scotian Shelf approximately 40 km southwest of Sable Island (Nova Scotia Offshore). Eight cored intervals between 2069 and 2221 m comprising 152 m of interbedded gray-black shale and sandstone with shell fragments have been described and sampled. Forty-one samples have been processed for foraminiferal Previous HitanalysisNext Hit to supplement earlier Previous HitanalysisNext Hit of cuttings. The majority of samples results in a rich benthic foraminifera assemblage allowing a quantitative characterization of the >63┬Ám fraction.

The foraminiferal associations recorded from the studied cores are characterized mainly by agglutinated specimens of Trochammina, Haplophragmoides, Ammobaculites and Verneulinoides. The foraminiferal associations and abundances from the examined samples are comparable with modern assemblages of salt marshes and estuaries. "Marsh-estuary type" fauna similar to the Cohasset ones has been previously reported from Cretaceous sections in Alberta. The Previous HitanalysisNext Hit of the occurrence and distribution of "marsh-estuary type" agglutinated foraminifera, together with detailed sedimentological and ichnological Previous HitanalysisNext Hit of the cores has provided Previous HitpaleoenvironmentalTop characterization of marginal marine and paralic environments.