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TitleGIS-enabled subsurface time and depth structure maps, Cambrian to Cretaceous, Great Bear and Mackenzie plains, Northwest Territories
AuthorMacLean, B C
SourceGeological Survey of Canada, Open File 5327, 2006, 11 pages; 1 DVD,
Documentopen file
MapsPublication contains 23 maps
Map Info.geological, top of strata-seismic depth, structural features, 1:500,000
Map Info.geological, thickness of strata-seismic depth, structural features, 1:500,000
Map Info.geophysical, average seismic velocity, 1:500,000
Map Info.geophysical, seismic internal velocity, 1:500,000
Map Info.geological, depositional history, 1:2,500,000
Mediadigital; DVD; on-line
File formatreadme
File formatdbf (ESRI® ArcReaderTM v. 9.1 is included / est fourni); doc; e00 (ESRI® ArcReaderTM v. 9.1 is included / est fourni); gif; htm; jpg; pdf (Adobe® Reader® v. 7.0.5, included / y inclus); pmf (ESRI® ArcReaderTM v. 9.1 is included / est fourni); prj (ESRI® ArcReaderTM v. 9.1 is included / est fourni); sbn (ESRI® ArcReaderTM v. 9.1 is included / est fourni); shp (ESRI® ArcReaderTM v. 9.1 is included / est fourni); txt
ProvinceNorthwest Territories
NTS95M; 95N; 95O; 96B; 96C; 96D; 96E; 96F; 96G; 96J/01; 96J/02; 96J/03; 96J/04; 96J/05; 96J/06; 96J/07; 96J/08; 96K/01; 96K/02; 96K/03; 96K/04; 96K/05; 96K/06; 96K/07; 96K/08; 96L/01; 96L/02; 96L/03; 96L/04; 96L/05; 96L/06; 96L/07; 96L/08
AreaGreat Bear Plain; Mackenzie Plain; Mackenzie Valley; Great Bear Lake; Keith Arm; Mackenzie River; Norman Wells; Franklin Mountains; Norman Range; St. Charles Range; McConnell Range; Mackenzie Mountains; Mackay Range
Lat/Long WENS-128.0000 -122.0000 66.5000 63.0000
Subjectsstructural geology; stratigraphy; bedrock topography; basement geology; stratigraphic analyses; structural features; faults; folds; unconformities; grabens; geophysical surveys; seismic reflection surveys; salt diapirs; salt solution; fluid migration; well locations; geological history; depositional history; crustal uplift; deformation; subsidence; erosion; basins; basin evolution; Saline River Formation; Mount Cap Formation; Mount Clark Formation; Franklin Mountain Formation; Mount Kindle Formation; Imperial Formation; Canol Formation; Kee Scarp Formation; Hare Indian Formation; Hume Formation; Landry Formation; Fort Norman Formation; Arnica Formation; Bear Rock Formation; Camsell Formation; Tsetso Formation; Blackwater Fault; Keele Arch; Mackenzie Trough; Mahony Arch; Laramide Orogeny; Gambill salt wall; geographic information system; well data; foreland basins; Phanerozoic; Cenozoic; Tertiary; Mesozoic; Cretaceous; Paleozoic; Devonian; Silurian; Ordovician; Cambrian; Precambrian; Proterozoic
Illustrationsstratigraphic charts; geophysical images
Northwest Territories Geoscience Office (Yellowknife)
Natural Resources Canada Library - Ottawa (Earth Sciences)
Natural Resources Canada library - Calgary (Earth Sciences)
Geological Survey of Canada (Atlantic)
Natural Resources Canada library - Vancouver (Earth Sciences)
Natural Resources Canada library - Québec (Earth Sciences)
ProgramSecure Canadian Energy Supply
LinksMetadata - Métadonnées
Released2006 11 01
AbstractA dataset consisting of over 300 reflection seismic lines, 75 wells, and numerous surface maps was used to develop a set of subsurface maps which are presented here in a digital GIS format. Map contours are in units of reflection time (msec) or metres and depths are relative to a datum of 305 m (1000') above sea level. The area of study extends from 63° to 66° north latitude and from Great Bear Lake in the east to the Mackenzie Mountains in the west and contains the physiographic areas of Great Bear Plain, Mackenzie Plain, and the Franklin Mountains including the McConnell and St Charles ranges. The maps all show relatively thin and undeformed Phanerozoic strata under Great Bear Plain that dip westward towards the Laramide deformed belts. Deepest (or thickest) strata are associated either with foreland basins or a central area of subsidence involving rhomboid shaped grabens. Prominent tectonic features include the Cambrian Mackenzie Trough and Mahony Arch, grabens of Cambrian and younger age that affect the underlying Proterozoic strata, and the multi-phase Keele Arch. Overprinting these are features created by movement of Cambrian salt and by regional tectonics imposed during the Laramide Orogeny.