The Stratigraphy and sedimentology of siliciclastic rocks, west-central Yukon, and their tectonic implications

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dc.contributor.advisorHills, Leonard V.
dc.contributor.authorLowey, G. W. (Grant William)
dc.coverage.spatial2000001692en
dc.coverage.spatial2000001693en
dc.date.accessioned2005-07-21T20:46:58Z
dc.date.available2005-07-21T20:46:58Z
dc.date.issued1984
dc.descriptionBibliography: p. 311-329.en
dc.description.abstractSiliciclastic strata between Carmacks and Dawson in west-central Yukon were previously interpreted as Eocene or younger in age and fluvial/continental in origin. Detailed stratigraphic and sedimentologic investigations in the Indian River and Sixtyrnile River areas indicate that some of the strata are much older and were deposited in a paralic environment. The Indian River Formation (new) is at least 500 m thick and consists of interbedded sandstone, shale, conglomerate dinoflagellates and minor indicate coal. that the Spores, formation pollen and is Middle Albian in age and was deposited in a hitherto unrecognized marginal marine basin by a southward prograding fan-delta complex. The Sixtyrnile Formation (new) is approximately 200 m thick and consists of interbedded conglomerate, sandstone, shale and minor limestone and tuff, and intercalated basalt flows. the close association of Palynomorphs, fossil leaves and volcanic rocks indicate the formation is Late Cretaceous-Paleocene in age, possibly Maastrichtian, and is assigned to the lower part of the Carmacks Group. The formation was deposited in a restricted, nonmarine basin by a northward flowing braided-meandering river system and a southward prograding alluvial fan complex. Previous paleogeographic reconstructions indicate that Whitehorse Trough, a Late Triassic to Middle Jurassic backarc or forearc basin {Lewes River and Laberge groups, basalt flows, carbonate reefs and flysch), evolved into a series of restricted, nonmarine basins by Late Jurassic to Early Cretaceous time {Tantalus Formation, alluvial plain). This study proposes that the Trough evolved from a Late Triassic to Middle Jurassic backarc or forearc basin into a successor basin by Late Jurassic to Early Cretaceous time {Tantalus and Indian River formations), which subsequently evolved into a series of restricted, nonmarine basins by Late Cretaceous to Paleogene time {Sixtymile Formation and unnamed strata). Late Mesozoic-Paleogene siliciclastic strata in west-central Yukon reflect the collision, suturing and emplacement of allochthonous with autochthonous terranes and are interpreted as part of the "successor basin" molasse facies of the Canadian Cordillera.
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.extentxxvi, 620 leaves : ill. ; 30 cm.en
dc.identifier.citationLowey, G. W. (1984). The Stratigraphy and sedimentology of siliciclastic rocks, west-central Yukon, and their tectonic implications (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca. doi:10.11575/PRISM/14715en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/14715
dc.identifier.lccQE 691 L68 1985en
dc.identifier.otherNL Number: 66270en
dc.identifier.urihttp://hdl.handle.net/1880/23076
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 691 L68 1985en
dc.subject.lcshGeology, Stratigraphic - Tertiary
dc.subject.lcshGeology - Yukon Territory
dc.subject.lcshRocks, Sedimentary
dc.subject.lcshGeology, Stratigraphic - Mesozoic
dc.subject.lcshRock, Siliceous
dc.titleThe Stratigraphy and sedimentology of siliciclastic rocks, west-central Yukon, and their tectonic implications
dc.typedoctoral thesis
thesis.degree.disciplineGeology and Geophysics
thesis.degree.grantorUniversity of Calgary
thesis.degree.nameDoctor of Philosophy (PhD)
ucalgary.thesis.notesoffsiteen
ucalgary.thesis.uarcreleasenoen
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