Late Cenozoic geology, Ancient Pacific Margin Natmap Project, report 4: paleomagnetic and geomorphic evidence for Brunhes-age volcanism, Fort Selkirk and Rosebud Creek area, Yukon Territory

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dc.contributor.authorHuscroft, Crystal A.
dc.contributor.authorBarendregt, René W.
dc.contributor.authorJackson, Lionel E.
dc.date.accessioned2022-05-13T19:34:33Z
dc.date.available2022-05-13T19:34:33Z
dc.date.issued2001
dc.descriptionOpen accessen_US
dc.description.abstractNormally magnetized, valley-filling basalt flows extend more than 10 km down the Yukon River valley from the Fort Selkirk area. These flows are locally overlain by gravel and terminate at the level of the contemporary Yukon River flood plain, suggesting a middle to late Pleistocene age for this previously unrecognized eruptive event. Unlike other valley-filling phases of the Selkirk Volcanic Group, this eruption postdates the Pliocene to early Pleistocene pre-Reid glaciations. Normal magnetism was also determined for basalt flows underlying terraces in the area of the Rosebud Creek-Grand Valley Creek confluence, 60 km to the northwest of the Fort Selkirk area. Based on their unique geomorphic and stratigraphic settings, the Rosebud basalt flows may represent yet another period of Pleistocene volcanism which predates one of the pre-Reid glaciations in the central Yukon Territory.en_US
dc.description.peer-reviewYesen_US
dc.identifier.citationHuscroft, C. A., Barendregt, R. W., & Jackson, L.E. (2001). Late Cenozoic geology, Ancient Pacific Margin Natmap Project, report 4: Paleomagnetic and geomorphic evidence for Brunhes-age volcanism, Fort Selkirk and Rosebud Creek area, Yukon Territory. Geological Survey of Canada, Current Research, 2001-A4, 6 p.en_US
dc.identifier.urihttps://hdl.handle.net/10133/6175
dc.language.isoen_USen_US
dc.publisherGeological Survey of Canadaen_US
dc.publisher.departmentDepartment of Geography and Environmenten_US
dc.publisher.facultyArts and Scienceen_US
dc.publisher.institutionSimon Fraser Universityen_US
dc.publisher.institutionUniversity of Lethbridgeen_US
dc.publisher.institutionGeological Survey of Canadaen_US
dc.subjectAncient Pacific Margin Natmap Projecten_US
dc.subjectBrunhes-age volcanismen_US
dc.subjectFort Selkirk areaen_US
dc.subjectRosebud Creek areaen_US
dc.subjectLate Cenozoic geology
dc.subjectRosebud basalt flows
dc.subjectPleistocene
dc.subjectYukon River
dc.subjectStewart River
dc.subject.lcshVolcanism--Yukon
dc.subject.lcshPaleomagnetism--Yukon
dc.titleLate Cenozoic geology, Ancient Pacific Margin Natmap Project, report 4: paleomagnetic and geomorphic evidence for Brunhes-age volcanism, Fort Selkirk and Rosebud Creek area, Yukon Territoryen_US
dc.typeTechnical Reporten_US
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