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Ministry of Energy Mines and Responsible for Core Review

092HNW

Yale

 

STRATIFIED ROCKS

CENOZOIC

 

QUATERNARY

 

    PLEISTOCENE AND RECENT

Qal

Unconsolidated alluvial, glaciofluvial and lacustrine deposits, till, colluvium, and landslides

 

TERTIARY

 

    UPPER OLIGOCENE TO LOWER MIOCENE

OMCv

COQUIHALLA FORMATION: intermediate, felsic pyroclastics and flows

 

EOCENE

Es

Sandstone, conglomerate and argillite; (includes Allenby Formation of the Princeton Group)

 

MESOZOIC

 

CRETACEOUS

 

    MIDDLE AND UPPER CRETACEOUS

KSB

SPENCES BRIDGE GROUP:  Intermediate, locally felsic and mafic volcanics, sandstone, shale and conglomerate

    

UPPER LOWER OR LOWER UPPER CRETACEOUS

KP

PASAYTEN GROUP:  Undifferentiated sandstone, chert-grain sandstone, conglomerate, arkose and argillite

 

    LOWER AND MIDDLE CRETACEOUS

KJ

JACKASS MOUNTAIN GROUP:  Sandstone, argillite and conglomerate; the upper part is probably a facies equivalent of the Pasayten Group

 

JURASSIC AND CRETACEOUS

JKB

BROKENBACK HILL FORMATION:  Intermediate pyroclastics and flows

 

JKP

PENINSULA FORMATION:  Sandstone and conglomerate; gradational upwards into the Brokenback Hill Formation

 

JURASSIC

 

    UPPER JURASSIC

JB

BILLHOOK CREEK FORMATION:  Intermediate volcanics

 

    MIDDLE AND UPPER JURASSIC

JM

MYSTERIOUS CREEK FORMATION:  Argillite and tuff

    LOWER AND MIDDLE JURASSIC

JH

HARRISON LAKE FORMATION:  Intermediate, locally felsic flows and pyroclastics.  Local argillite and conglomerate

 

   LOWER AND MIDDLE (to LATE) JURASSIC

            LADNER GROUP (JL AND JD)

JL

Slaty argillite, siltstone, wacke, tuffaceous wacke and conglomerate

 

JD

DEWDNEY CREEK FORMATION:  Sandstone, argillite and local intermediate to mafic volcanics

 

TRIASSIC

 

    LOWER TRIASSIC

TSP

SPIDER PEAK FORMATION:  Pillowed greenstone, gabbro and minor volcaniclastics

 

PALEOZOIC AND MESOZOIC

 

PMC

Carbonate in Mount Lytton Complex

 

PERMIAN TO JURASSIC

PJH

HOZAMEEN COMPLEX:  Undifferentiated chert, pelite, mafic volcanics with minor limestone, gabbro and ultramafic rock (correlative with Bridge River Complex)

 

INTRUSIVE ROCKS

CENOZOIC

 

TERTIARY

 

    OLIGOCENE

Ogd

CHILLIWACK BATHOLITH:  Granodiorite

 

    EOCENE

Egd

NEEDLE PEAK PLUTON:  Granodiorite

 

EARLY TERTIARY

ETgd,g

Intrusions of granodiorite or granitic composition

 

MESOZOIC

 

CRETACEOUS

 

    LATE CRETACEOUS

IKgd, qm

SCUZZY PLUTON:  Granodiorite and quartz monzonite

 

    EARLY AND MIDDLE CRETACEOUS

Kqd,d,gd

SPUZZUM PLUTON:  Quartz diorite, diorite and granodiorite with minor ultramafic rock

 

JURASSIC AND CRETACEOUS

 

    LATE JURASSIC AND EARLY CRETACEOUS

JKgd,d,g

EAGLE PLUTONIC COMPLEX:  Granodiorite, diorite, muscovite-biotite granite and gneiss

 

TRIASSIC AND/OR JURASSIC

TJgd

Granodioritic intrusions related to the Allison Lake, Cahill Creek and Bromley plutons (part of the Mount Lytton Complex)

 

TJd

Diorite and amphibolite of the Mount Lytton Complex

 

TJML

MOUNT LYTTON COMPLEX:  Diorite

 

PALEOZOIC TO MESOZOIC

 

PMu

Ultramafic rock and local gabbro

 

PERMIAN TO JURASSIC

PJu

Ultramafic rock and local gabbro (associated with the Bridge River and Hozameen complexes

 

METAMORPHIC ROCKS

 

CENOZOIC AND MESOZOIC

 

CRETACEOUS AND/OR TERTIARY

KTC

CUSTER GNEISS:  Pegmatitic granite gneiss, pelitic schist, amphibolite with minor marble and ultramafic rock

 

MESOZOIC

MS

Garnet-biotite, staurolite, kyanite and sillimanite schist (in part Settler Schist) with local amphibolite and minor ultramafic rock and siliceous schist

 

MSL

SLOLLICUM SCHIST:  Garnet-biotite, staurolite, kyanite and sillimanite schist with local amphibolite and minor ultramafic rock and siliceous schist

 

CRETACEOUS

 

    EARLY AND MIDDLE CRETACEOUS

Kgn

Felsic and mafic gneiss (Breakenridge gneiss)

 

TRIASSIC

 

    LATE TRIASSIC

TNm

NICOLA GROUP:  Amphibolite, foliated diorite, mylonite, chlorite schist and minor limestone (derived from Nicola Group volcanic and sedimentary facies)

 

TRIASSIC

Tgn

Granite gneiss of Hornet Creek

 

PALEOZOIC AND MESOZOIC

PMC

COGBURN SCHIST:  Meta-chert, pelite, amphibolite, marble and minor ultramafic rock (possibly correlative with the Bridge River/Hozameen complexes)

 

PERMIAN TO JURASSIC

PJBR

BRIDGE RIVER COMPLEX:  Siliceous and chlorite schist and phyllite (correlative with Hozameen Complex)

 

PROTEROZOIC AND PALEOZOIC

PPY

YELLOW ASTER COMPLEXMetadiorite and gabbro (includes Baird Diorite on Settler Mountain)

 

Geological map and legend adapted from:

Monger, J.W.H. (1989): Geology, Hope, British Columbia Geological Survey of Canada, Map 41-1989, sheet 1, 1:250 000.

 

Ray, G.E. (1990):  The Geology and Mineralization of the Coquihalla Gold Belt and Hozameen Fault System, Southwestern British Columbia; Ministry of Energy, Mines and Petroleum Resources, Bulletin 79, Figures 40 and 41, scale 1:20 000.

 

See YALE (092HNW) 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.