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Memorial University - Electronic Theses and Dissertations 1
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TitleTaxonomy and biostratigraphy of Middle Ordovician (Llanvirn) graptolites from the Table Cove and Black Cove formations, western Newfoundland
AuthorTaylor, Rod Stephen, 1969-
DescriptionThesis (M.Sc.)--Memorial University of Newfoundland, 1997. Earth Sciences
Paginationix, 258 leaves : ill., map
SubjectGraptolites--Newfoundland and Labrador, Western; Paleontology--Ordovician
Degree GrantorMemorial University of Newfoundland. Dept. of Earth Sciences
DisciplineEarth Sciences
Spatial CoverageCanada--Newfoundland and Labrador
Temporal CoveragePaleozoic Era--Ordovician Period
NotesBibliography: leaves 201-212.
AbstractThis thesis provides the first full taxonomic treatment of graptolites from the Middle Ordovician (Llanvirn) Table Head and Goose Tickle groups of western Newfoundland. These rocks represent the upper portion of an autochthonous sedimentary and volcanic sequence that was deposited in a shallow water, near-shore environment during the rifting and passive drifting of the continental margin. Seventeen taxa from these strata are discussed in detail, based almost exclusively on flattened material, including Glossograptus sp. nov. Specimen preservation is best in the Port au Port region, quality decreasing to the east and the north. -- There is good correlation between graptolite assemblages at the various exposures of the Table Cove and Black Cove formations, but there appears to be insufficient vertical change through the sequences to permit faunal subdivision of this interval (equivalent to the Australian Darriwilian 3). -- The graptolite assemblages found in these rocks suggest a low latitude, warm water setting (Pacific Province) at the time of formation. However, the increased number of pandemic species compared to neighbouring Early Ordovician (Arenig) sequences in western Newfoundlamd suggests that provincialism was becoming less pronounced at this time.
Resource TypeElectronic thesis or dissertation
FormatImage/jpeg; Application/pdf
SourcePaper copy kept in the Centre for Newfoundland Studies, Memorial University Libraries
Local Identifiera1212612
RightsThe author retains copyright ownership and moral rights in this thesis. Neither the thesis nor substantial extracts from it may be printed or otherwise reproduced without the author's permission.
CollectionElectronic Theses and Dissertations
Scanning StatusCompleted
PDF File(34.88 MB) --
CONTENTdm file name34416.cpd