Late triassic - jurassic dinoflagellate biostratigraphy, Western Arctic Canada

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dc.contributor.advisorHills, Leonard V.
dc.contributor.authorTan, J. T.
dc.coverage.spatial2000002802en
dc.date.accessioned2005-07-19T21:36:11Z
dc.date.available2005-07-19T21:36:11Z
dc.date.issued1979
dc.descriptionBibliography: p. 214-231.en
dc.description.abstractUpper Triassic-Jurassic sedimentary rocks, consisting dominantly of interbedded sands, sandstones and shales, are exposed on Borden, Brock, Mackenzie King, Melville, and Prince Patrick islands. In ascending order, they are the Schei Point, Borden Island, Savik, Wilkie Point, Ringnes, Deer Bay, and Mould Bay formations. A total of eight surface sections and over 300 palynological samples form the basis of this study. The dinoflagellates recovered are assignable to 31 genera and 69 species, of which 12 species and 1 subspecies are described as new. They are classified under Apical, Intercalary Precingular, Combination, and Unknown archeopyle groups. Eleven species of acritarchs are described. Twelve dinoflagellate assemblage zones are established, using macrofossils as biostratigraphic control . These zones , designated with corresponding letter zones are: 1) Rhaetogonyaulax arctica - Sverdrupiella usitata assemblage, TA Zone, Late Karnian; 2) He i bergella aculeata - Sverdrupiella septentrionalis assemblage, TB Zone, Norian; 3) TC Zone, Rhaetian - No data available; 4) Lithodinia canadensis - Sentusidiniwn psilatwn assemblage. JA Zone, Hettangian? - Late Sinemurian; 5) Ctenidodiniwn arcticum - Nannoceratopsis gracilis senex assemblage, JB Zone, Pliensbachian (?) - Late Toarcian; 6) Leptodinium arcylatum - Nanno ceratopsis gracilis gracilis assemblage, JC Zone, Bajocian; 7) Ctenidodiniwn orrrza,twn - Valensiella ampulla assemblage, JD-1 Zone, Early Bathonian; 8) Energlynia acollaris - Pareodinia evittii assemblage, JD-2 Zone, Late Bathonian; 9) Paragonyaulacysta calloviense - Pareodinia granulata assemblage, JE Zone, Callovian; 10) Gonyaulacysta jurassica jurassica - Hystrichogonyaulax cladophora assemblage, JF-1 Zone, Early Oxfordian; 11) Gonyaulacysta dualis - Horologinella spinosigibber osa assemblage, JF-2 Zone, Late Oxfordian to Early Kimmeridgian; and 12) Pareodinia capillosa - Tubotuberella apa t ela assemblage, JG Zone, Late Kimmeridgian to Portlandian. The ratio of dinoflagellates and acritarchs to pollen and spores was used to determine the relative distance from ancient shorelines. From this data, the paleoenvironments of each formation were classified into nearshore, middleshore, and offshore regimes. These interpretations were supported by sedimentological, foraminiferal and paleontological data. Correlation using stratigraphic, paleontological, and palynological techniques leads to the recognition of Triassic- Jurassic and Middle-Upper Jurassic unconformities in the western Sverdrup Basin.
dc.description.notesThis title is not available online. Access options are: - consulting the copy from Archives in our reading room in person - https://asc.ucalgary.ca/visiting/ - borrowing a circulating copy from the Library catalogue – https://ucalgary.primo.exlibrisgroup.com/discovery/search?vid=01UCALG_INST:UCALGARY&lang=en
dc.format.extentxv, 296 leaves : ill., maps ; 30 cm.en
dc.identifier82481086en
dc.identifier.citationTan, J. T. (1979). Late triassic - jurassic dinoflagellate biostratigraphy, Western Arctic Canada (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/23346en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/23346
dc.identifier.lccQE 731 T34 1979 Microficheen
dc.identifier.other82481086en
dc.identifier.urihttp://hdl.handle.net/1880/15132
dc.language.isoeng
dc.publisher.institutionUniversity of Calgaryen
dc.publisher.placeCalgaryen
dc.rightsUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subject.lccQE 731 T34 1979 Microficheen
dc.subject.lcshPaleontology - Mesozoic
dc.subject.lcshPaleontology, Stratigraphic
dc.subject.lcshGeology, Stratigraphic - Mesozoic
dc.subject.lcshDinoflagellata
dc.titleLate triassic - jurassic dinoflagellate biostratigraphy, Western Arctic Canada
dc.typedoctoral thesis
thesis.degree.disciplineGeology
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.thesis.notesPLen
ucalgary.thesis.uarcreleasenoen
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