Thematic structural studies in the Slave Province, Northwest Territories: contrasting basement/cover relationships on western and southwestern flanks of the Sleepy Dragon Complex
Abstract
Systematic investigations of the basement/cover contact on the western and southwestern flanks of the Sleepy Dragon Complex show that this contact is marked by unconformities of different ages as well as a pre-2671 Ma high-strain zone. The high-strain zone at Patterson Lake, on the western flank of the complex, could be an early extensional shear zone. It is cut by two dyke swarms that predate the Raquette Lake unconformity on the southwest flank of the complex. Detrital zircon data on a quartzite sample of the Raquette Lake Formation show two age groups: ca. 2935 Ma basement grains, and 2690-2680 Ma grains. The age of the youngest grain at 2683 ± 1 Ma provides a maximum age of deposition for the Raquette Lake Formation. The sheared unconformity on the western flank of the complex is overlain by the Patterson Lake formation, the stratigraphy of which is described in detail.
Related Papers
- Thematic Cartography and Geographic Visualization(2004)
- → Thematic Cartography and Geovisualization(2022)327 cited
- → Metodologija tematske kartografije nacionalnega atlasa Slovenije(1999)4 cited
- → Crime Map Cartography(2005)
- → Using thematic maps of different eras in the training of cartography students(2019)