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Drift Composition and Surficial Geology of the Trutch Map Area (94G), Northeastern British Columbia

Geological Survey of Canada Open File D3815

Projection

Description

All of the spatial data on this CD is provided in the UTM (Universal Transverse Mercator) coordinate system.

Data are provided in the UTM coordinate system as this is the common working projection for plotting or locating data at local or detailed scales. Published paper copy topographic maps universally have a superposed UTM grid from which coordinates can be determined. The UTM projection subdivides the earth into sixty zones, each spanning 6º of longitude; Trutch map sheet lies within zone 10 North.

All data sets on this CD are referred to the North American Datum 1983 (NAD83).  Note that map boundaries (and in many cases source boundaries) are based on integral values of latitude and longitude referred to NAD27. Now that their coordinates have been transformed to NAD83 they no longer represent integral values of latitude and longitude. To determine coordinates of features in SurView you can also use the smart cursor.


Projection Parameters

Universal Transverse Mercator
Parameter
Value
Datum NAD83
Spheroid GRS80
Units metres
Zone 10

 
Canadian National Topographic System (NTS) 1:250 000 Scale Map Names for North Eastern British Columbia


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