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Preliminary results on the stratigraphy structure
Geology of Ashcroft map area southwestern British Columbia 293
Precambrian ShieldBouclier précambrien
4 other sections not shown
allochthon amphibolite Archean assemblages basalt basin batholith beds belt biotite breccia British Columbia Canadian carbonate chert clastic clasts coarse complex composition conglomerate contain Current Research deformation deposits District of Mackenzie dolomite dolostone dome dykes east Ellesmere facies fault feldspar felsic Figure Fiord Formation flows folds foliation fractures fragments garnet Geological Survey gneiss grade grained granite granodiorite grey intrusive iron formation Island isotopic Lake map area laminated lava layers limestone lithologies locally lower mafic margin massive matrix metamorphic migmatitic mineral mudstone mylonite northwest occur olivine Ontario Ordovician Orogen outcrop overlain overlying Paleozoic Paper pebble pelite phase plagioclase plutons Proterozoic quartz quartzite regional rhyolite Richmond Gulf River samples sandstone schist sedimentary sediments sequence shale siltstone southeast stratigraphic stromatolites structures sulphide Survey of Canada tectonic tectonite texture thick thin thrust tuff unconformity unit upper uranium volcanic rocks weathering Wopmay zone