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Ministry of Energy Mines and Responsible for Core Review

093D & 103A Geological Legend

 

Bella Coola and Laredo Sound

STRATIFIED ROCKS

QUATERNARY

RECENT

Rvb

Basalt flows, breccia, cinder cones
TERTIARY

MIOCENE AND PLIOCENE

MPvb

Olivine basalt flows, breccia, tuff

OLIGOCENE AND MIOCENE

OMsv

BELLA BELLA FORMATION: andesite, agglomerate, greywacke, slate, conglomerate
CRETACEOUS

LOWER CRETACEOUS

IKvd

Andesite, basalt, tuff, breccia
JURASSIC

MIDDLE JURASSIC

mJhv

HAZELTON GROUP, (part), undivided; basalt, andesite, tuff, breccia, greywacke, mudstone, conglomerate

LOWER AND MIDDLE JURASSIC

Jp

Slate, argillite, conglomerate

UPPER TRIASSIC AND LOWER JURASSIC

TrJv

Andesite, basalt, tuff, breccia, minor sediments
PALEOZOIC

UPPER PALEOZOIC AND (?) YOUNGER OR OLDER

Pn

Gneiss, gneissic quartz diorite, granodiorite, amphibolite

Ps

Metasediments, schist

Psn

Metasediments, amphibolite, schist, gneissic quartz diorite predominantly of sillimanite grade

PLUTONIC ROCKS

TERTIARY

LATE TERTIARY

LTy

Syenite, granite, minor quartz monzonite

EARLY TERTIARY (Mainly)

ETy

Syenite, granite, monzonite
CRETACEOUS AND/OR TERTIARY

KTqm

Quartz monzonite, quartz diorite, granodiorite

KTgd

Granodiorite, diorite, quartz diorite
JURASSIC

MIDDLE JURASSIC AND/OR OLDER

MJgdn

Gneissic granodiorite, minor metamorphic rocks

MJqdn

Well-foliated quartz diorite, minor granodiorite, diorite, greenstone

MJdin

Gneissic diorite with inclusions of metamorphic and sedimentary rocks
AGE UNKNOWN

COAST PLUTONIC COMPLEX

ggn

Acid and intermediate intrusive rocks

qm

Quartz monzonite

gd

Biotite-hornblende granodiorite

qd

Quartz diorite

qdn

Foliated biotite-hornblende quartz diorite

din

Foliated to gneissic diorite, amphibolite, minor metasediment

b

Gabbro, diorite, norite

Geological legend and base derived from:

Tipper, H.W., R.B. Campbell, G.C. Taylor and D.F. Stott (compilers) (1974): Parsnip River, Sheet 93; Geological Survey of Canada, Map 1424A, 1:1,000,000

Hutchison, W.W. and A.V. Okulitch (compilers)(1973): Skeena River, Sheet 103; Geological Survey of Canada, Map 1385A, 1:1,000,000

Baer A.J. (compiler)(1972): Bella Coola; Geological Survey of Canada, Map 1327A (Memoir 372), 1:250,000

Baer A.J. (compiler)(1972): Laredo Sound; Geological Survey of Canada, Map 1328A (Memoir 372), 1:250,000

See BELLA COOLA & LAREDO SOUND Map Areas (093D & 103A) Summary Sheet for an overviews of the map areas and additional regional references.

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.