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- W2188979454 abstract "Summary The Pinguicula Group is a Proterozoic succession of clastic and carbonate rocks exposed in the Wernecke and Ogilvie Mountains of northern Yukon (Eisbacher, 1981). The strata were deposited with angular unconformity on the Wernecke Supergroup following the Racklan orogeny. Previous workers in the Wernecke and Ogilvie Mountains have provided basic stratigraphic descriptions and mapped part of the succession in detail (Abbott, 1997; Thorkelson, 2000); however, the remaining areas have yet to be mapped beyond reconnaissance level and several questions regarding the age, depositional environment and contact relationships with other strata remain unresolved. Sedimentological details of the Pinguicula Group units A through C remain poorly understood and little information on sediment composition and provenance has been obtained. Correlations with strata in adjacent mountain ranges have yet to be tested. Our current research is designed to provide a detailed characterization of the Pinguicula Group including age, lithology, stratigraphic relationships and basin configuration, and to define the extent of the Pinguicula Group by correlating it with similar strata in adjacent mountain ranges. Two contact relationships were resolved in the 2009 field season. The first, a 1380 Ma dyke previously thought to crosscut unit A, has instead been recognized to crosscut the underlying Wernecke Supergroup strata. This relationship is significant because it calls the lower age limit of the Pinguicula Group into question and may reposition the deposition of the Pinguicula Group within the history of geologic events. Secondly, the previously undefined contact relationship between units B and C has been identified as a gradational contact confirming the placement of unit C within the Pinguicula Group. In addition, preliminary data collected from the western Ogilvie Mountains draws similarities between units PR1 and PR2 of the lower Fifteenmile Group and units A, B, and C of the Pinguicula Group. Although preliminary results from the 2009 field season have resolved some of the unknowns surrounding the Pinguicula Group, they have also raised more questions." @default.
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- W2188979454 date "2010-01-01" @default.
- W2188979454 modified "2023-09-26" @default.
- W2188979454 title "Proterozoic Pinguicula Group: Age, Stratigraphic Contacts, and Correlations" @default.
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