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Ministry of Energy Mines and Responsible for Core Review

104H Geological Legend

 

Stratified Rocks

Tertiary

Miocene and Pliocene

MPv

Olivine Basalt Flows and Breccias
Cretaceous

Upper Cretaceous

SUSTUT GROUP

KEB

Brothers Peak Formation: Chert-pebble conglomerate, sandstone, tuff, shale

Lower to Upper Cretaceous

KT

Tango Creek Formation: Chert-pebble conglomerate, micaceous sandstone, siltstone
Jurassic to Cretaceous

Lower Cretaceous

BOWSER LAKE GROUP

lKD

Devil's Claw Formation: Conglomerate, minor siltstone and shale

lKM

McEvoy Formation: Shale, siltstone, sandstone, conglomerate, coal

lKC

Currier Formation: Shale, siltstone, sandstone, coal, carbonates

Middle to Upper Jurassic

muJA

Ashman / Mount Jackson Formation: Marine shale, siltstone, sandstone, chert-pebble conglomerate
Jurassic

Middle Jurassic

mJvs

Unnamed: Volcanic flows, breccia, tuffs, sandstone, chert-pebble conglomerate

Lower Jurassic

lJB

Brock Volcanics: Porphyritic flows, breccia, tuff, tuffaceous wacke, argillite, limestone

lJS

Spatsizi Group: Volcanic breccia, welded tuff, tuffaceous wacke, siltstone, shale, limestone, chert-pebble conglomerate

lJC

Cold Fish Volcanics: Porphyritic flows, breccia, tuff
Triassic to Jurassic

Upper Triassic to Lower Jurassic

TJvs

Unnamed: Aphyric and porphyritic breccia, tuff,flows, tuffaceous wacke, siltstone, argillite, limestone

Upper Triassic

uTS

Stuhini Group: Tuffaceous wacke, and siltstone,basal breccia and conglomerate, aphanitic to porphyritic breccia, tuff, flows, granitic pebble to cobble conglomerate, limestone

Middle Triassic

mTT

Tsaybahe Group:
Upper Volcanic Unit: Porphyritic breccia, tuff, flows, greywacke, siltstone, argillite
Middle Sedimentary Unit: Argillite, phyllite, tuff-aceous greywacke, minor chert and limestone
Lower Volcanic Unit: Porphyritic breccia, tuff, flows
Basal Sedimentary Unit: Phyllite, argillite, rare chert
Carboniferous and Older

Pg,v,c

Unnamed: Leucogranite, leucogranodiorite, gabbro, limestone, phyllite, greenstone, chert

 

Plutonic Rocks

Jurassic to Tertiary

JTmg

McEwan Creek Pluton: Leucogranite,rare quartz monzonite
Early Jurassic

EJqm

Rose and Edon Plutons: Quartz monzonite, porphyritic monzodiorite, rare syenite
Late Triassic to Late Jurassic

TJHB

Hotailuh Batholith:
Three Sisters Pluton: Granite, quartz monzonite, granodiorite, hornblende diorite, gabbro
McBride River Pluton: Hornblende-biotite granodiorite or tonalite
Beggerlay Creek Pluton: Hornblende-augite meta-diorite and meta-gabbro
Cariboo Meadows Pluton: Augite meta-gabbro, hornblendite
Railway Pluton: Biotite-augite meta-monzodiorite

TJSB

Stikine Batholith: Granite, biotite-hornblende quartz monzonite and monzodiorite,diorite
 

Geological map and legend compiled from:

Anderson, R.G. (1984): Late Triassic and Jurassic Magmatism along the Stikine Arch and the Geology of the Stikine Batholith, north-central British Columbia; Geological Survey of Canada, Current Research, Paper 84-1A, p. 67-73.

Gabrielse, H. and Tipper, H.W. (1984): Bedrock Geology of the Spatsizi Map Area (104H); Geological Survey of Canada, Open File 1005.

MacLeod, S.E. and Hills, L.V. (1990): Conformable late Jurassic (Oxfordian) to Early Cretaceous Strata of the Northern Bowser Basin, British Columbia: A Sedimentalogical and Paleontological Model; Canadian Journal of Earth Science, Vol. 27, p. 988-998.

Read, P.B. (1984): Geology Klastine River (104G/16E), Ealue Lake (104H/13W), Cake Hill (104I/4W) and Stikine Canyon (104J/1E), British Columbia; Geological Survey of Canada, Open File 1080.

Read, P.B. and Psutka, J.F. (1990): Geology of Ealue Lake East Half (104H/13W) and Cullivan Creek (104H/14) Map Areas, British Columbia; Geological Survey of Canada, Open File 2241.

See SPATSIZI (104H) Summary Sheet for an overview of the map area 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.