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Ministry of Energy Mines and Responsible for Core Review

103J Geological Legend

 

Prince Rupert

STRATIFIED AND VOLCANIC ROCKS

QUATERNARY
          PLEISTOCENE AND RECENT

7

Non-marine and marine sand glacial deposits, alluvium
TERTIARY (?)

6

Volcanic Rocks
LATE JURASSIC
     BOWSER LAKE GROUP (?)

5

Greywacke and argillite
EARLY MESOZOIC (?) and/or PALEOZOIC

4

Metasedimentary rocks of greenschist facies:
4a Black to dark grey graphite schist;
4b Intercalated pale and dark schist;
4c Intercalated chlorite and sericite schist;

3

Weakly metamorphosed volcanic rocks:
3a Tuff
3b Agglomerate and volcanic breccia;
3c Rhyolite tuffs and flows;
3d Schistose metavolcanic rocks;
3e Mixed volcanic and plutonic rocks;
3f Limestone, quarztite and sericte schist; minor graphite schist (These are mappable intercalations in the metavolcanic rocks)

2

Metasedimentary rocks of amphibolite facies:
2a Rusty weathering muscovite + biotite + garnet amphibole schist; minor amphibolite and micaceous quartzite;
2b Feldspathic schist, impure quartzite and hornblende schist;
2c Dark greenish grey hornblende + biotite + garnet schist and impure quartzite with rare intercalated marble;
2d Black to dark grey graphite schist with local interbedded conglomerate, grey wacke and marble;
2e Mt. Morse felsic rocks of uncertain origin;
2f Marble
PALEOZOIC (?)

CENTRAL GNEISS COMPLEX

1a Dominantly buff grey leucogneiss and migmatite
1b Dominantly grey biotite + hornblende gneiss amphibolite, minor sillimanite + garnet gneiss;
1c Work Channel amphibolite;
1d Dominantly biotite horn blende, gneiss, amphibolite and minor migmatite, rare biotite + muscovite + garnet + kyanite schist and gneiss
1e Migmatitic plutonic rock

PLUTONIC ROCKS

H Post volcanic (unit 6) granite
G Quartz monzonite, minor granodiorite .
F Granodiorite. minor quartz diorite, quartz monzonlte
E Quartz diorite. minor diorite. Granodiorite
D Diorite, minor quartz diorite
C Gabbro and diorite
B Ultrabasic rock
A Older plutonic rocks
 

Geological legend and base derived from:

Hutchison, W.W. (compiler)(1979): Prince Rupert -Skeena; Geological Survey of Canada, Map 1472A, 1:250,000.

See Prince Rupert (103J) Summary Sheet for an overview of the map area.

Positions of all geological contacts are approximate. In the case of an apparent disagreement between an occurrence’s geological location on the map and its stratigraphic setting given in the MINFILE documentation, the latter should be given priority.