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Ministry of Energy Mines and Responsible for Core Review

094N Geological Legend

 

LAYERED ROCKS

UPPER CRETACEOUS

SUSTUT GROUP

KW

WAPITI FORMATION: conglomerate, fine to coarse-grained sandstone; carbonaceous shale and coal.

KK

KOTANEELEE FORMATION: dark grey marine shale, minor sandstone.

KD

DUNVEGAN FORMATION: massive conglomerate, fine to coarse-grained sandstone, carbonaceous shale (marine and non-marine).

CRETACEOUS

FORT ST. JOHN GROUP

KSu

SULLY FORMATION: dark grey marine shale, sideritic (marine, includes Upper Cretaceous beds at top).

KB

BUCKINGHORSE FORMATION: dark grey marine shale, siltstone, sideritic concretions; minor sandstone (marine).

KL

LEPINE FORMATION: sideritic rusty weathering shale.

KS

SCATTER FORMATION (undivided): sandstone.

KSt

SCATTER FORMATION (Tussock Member): grey sandstone, siltstone, shale.

KSw

SCATTER FORMATION (Wildhorn Member): concretionary shale.

KSb

SCATTER FORMATION (Bulwell Member): glauconitic sandstone and siltstone.

KGa

GARBUTT FORMATION: sideritic rusty weathering shale.

TRIASSIC

TrLu

LUDINGTON FORMATION: dolomitic siltstone, light grey limestone, dark grey limestone. Includes Baldonnel and Pardonet formations.

TrL

LIARD FORMATION: orange brown dolomitic and calcareous sandstone, siltstone; minor limestone.

TrT

TOAD FORMATION: dark grey calcareous siltstone and shale; minor fine-grained sandstone; minor limestone.

TrG

GRAYLING FORMATION: silver grey locally calcareous shale, basal fine-grained sandstone.

PERMIAN

PF

FANTASQUE FORMATION: dark grey chert.

PK

KINDLE FORMATION: grey-brown, fine-grained calcareous sandstone, siltstone; dark grey shale.

MISSISSIPIAN

MM

MATTSON FORMATION: fine and medium-grained quartzose sandstone, sandy shale.

UPPER DEVONIAN

DB

BESA RIVER FORMATION: black, siliceous shale, minor sandstone and pebble conglomerate, barite.

DEVONIAN

DD

DUNEDIN FORMATION: medium grey, well-bedded fine-grained limestone; minor calcarenite; rare dolostone (marine).

DS

STONE FORMATION: light grey, very finely crystalline dolomite, dolomite breccia, dolostone, dolomitic quartz sandstone, quartz sandstone, medium to thick bedded ochre.

DW

WOKKPASH FORMATION: yellow weathering, fine-grained sandstone, dolomite, siltstone; minor solution breccia.

DM

MUNCHO-McCONNELL FORMATION: medium grey finely crystalline dolostone, sandy dolostone; minor shale and sandstone (marine, may include Upper Silurian beds near base).

SILURIAN

SN

NONDA FORMATION: dark grey, medium crystalline cherty dolostone, sandstone, minor limestone, minor white orthoquartzite.

ORDOVICIAN

KECHIKA GROUP

OK

Light grey limestone, argillaceous limestone (marine).

CAMBRIAN

ATAN GROUP

Cs

Red weathering coarse conglomerate, sandstone; minor limestone.

HELIKIAN

HTu

TUCHODI FORMATION: dolomite, dolomitic siltstone, sandstone, shale.

 

Geological map and legend extracted from:

MacIntyre, D., Legun, A., Bellefontaine, K., and Massey, N., 1995, Geological Compilation, Northeast B.C. (NTS 94A, B, C, F, G, H, I, J, K, N, O, P): B.C. Ministry of Energy, Mines and Petroleum Resources, Open File 1995-6, 1:250,000.

See Toad River (094N) 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.