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![The Central Foreland NATMAP Project](images/pagetop.gif)
ABSTRACT A GIS dataset of geological features for the
Chinkeh Creek map area (95C/9), Northwest Territories and Yukon
Territory.
Abstract: This geological map and database are
derived from regional
mapping in the Chinkeh Creek (NTS 95C/9) 1:50 000 scale map area,
as part of the Geological Survey of Canada's Central Foreland NATMAP
project. Geological features represented by attributed points, lines,
and
polygons have been compiled into a GIS dataset suitable for stand-alone
use, or integration with other data sets. User-defined attributes
provide
traditional geological map information with greater detail and
enhancements
such as explicit orientation data, and lithologies at visited outcrops.
The Chinkeh Creek map area is located along the border
between southwestern Northwest Territories and southeastern Yukon near
the southern termination of the Franklin Mountains. The Kotaneelee and
La Biche Ranges dominate the area and are underlain by folded Devonian
to Permian age strata. The intervening valleys are occupied by synclines
that preserve
Cretaceous strata. The box-type Kotaneelee and La Biche anticlines are
both west-verging structures with steep-to-overturned western limbs. The
La Biche anticline is further modified by a northeast verging thrust
fault exposed in the
core of the structure. Diverging structural trends can be seen between
the north-trending Kotaneelee anticline and the northwest-trending La
Biche structure, reflecting a broader interference pattern in the La
Biche River (NTS 95C) map area. The map pattern is also modified by the
sub-Cretaceous
unconformity that cuts out Permian strata towards the north end of the
map area.
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