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dc.contributor.authorMelzak, Adam.en_US
dc.date.accessioned2009-07-09T18:54:42Z
dc.date.available2009-07-09T18:54:42Z
dc.date.issued1993-07-09T18:54:42Z
dc.identifier.urihttp://hdl.handle.net/10464/2218
dc.description.abstractThe Upper Cambrian Pika Formation in the southern Canadian Rocky Mountains forms a complete lithologic Grand Cycle. The overall pattern of deposition is one of shallowing upwards from a subtidal, muddy, storm-influenced basin to a shallow carbonate bank. The Pika passes gradationally into the overlying inter- to supratidal siliciclastics of the Arctomys Formation. This transition probably reflects a fall in relative sea level. 2 Twenty seven collections from three sections yielded trilobites. The faunas are assigned to two low-diversity biofacies: the Marjumia - Spencella Biofacies and the GZyphaspis - menomoniid Biofacies. In contrast to biofacies of deeper, open-shelf environments, such as the Wheeler and Marjum formations of Utah, the Pika biofacies lack agnostid trilobites. Consequently, agnostid-based zonations defined elsewhere in North America cannot be applied to the Pika and a new sequence of three zones and one informal fauna is proposed for use in inner shelf facies. Eleven species belonging to six genera are described and illustrated. The species Marjumia bagginsi is new. Other genera present are: Bolaspidella, Knechtelia, GZyphaspis and Spencella, in addition to a number of indeterminate formsen_US
dc.language.isoengen_US
dc.publisherBrock Universityen_US
dc.subjectTrilobites--Canadian Rockies (B.C. and Alta.)en_US
dc.subjectPikas--Canadian Rockies (B.C. and Alta.)en_US
dc.subjectPaleontology--Canadian Rockies (B.C. and Alta.)en_US
dc.subjectPaleontology|yCambrian.en_US
dc.titleTrilobites of the Upper Cambrian (Marjuman) Pika formation of the Southern Canadian Rocky Mountainsen_US
dc.typeElectronic Thesis or Dissertationen_US
dc.degree.nameM.Sc. Earth Sciencesen_US
dc.degree.levelMastersen_US
dc.contributor.departmentDepartment of Earth Sciencesen_US
dc.degree.disciplineFaculty of Mathematics and Scienceen_US


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