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Ministry of Energy Mines and Responsible for Core Review

092O Geological Legend

 

Taseko Lakes

STRATIFIED ROCKS

CENOZOIC
TERTIARY AND QUATERNARY
     PLEISTOCENE AND RECENT

Qal

Unconsolidated alluvial, fluvial and glacial deposits
TERTIARY
     MIOCENE AND PLIOCENE
            CHILCOTIN GROUP

MPCv

Olivine basalt flows, andesite; tuff and breccia

MPCs

Siltstone, diatomite, clay and silty sand, conglomerate, minor ash beds and lignite
     OLIGOCENE AND MIOCENE

OME

ENDAKO GROUP: Andesite, basalt
     EOCENE AND OLIGOCENE

EOK

KAMLOOPS GROUP: Dacite, basalt
EOCENE

EV

Rhyolitic and dacitic tuff, breccia and flows; minor andesitic to basaltic rocks

ES

Conglomerate, volcanic arenite, minor siltstone
MESOZOIC
CRETACEOUS
     UPPER CRETACEOUS
            POWELL CREEK FORMATION

uKPCV

Andesitic breccia and lapilli tuff; volcanic conglomerate; pyroxene porphyry flows

uKPCS

Interbedded sillstone, greywacke and conglomerate
            KINGSVALE GROUP

uKKV

Varicoloured andesitic, dacitic and basaltic pyroclastics, minor flows and volcanic sediments

uKKS

Interbedded siltstone, greywacke, conglomerate

uKSq

SILVERQUICK FORMATION: Conglomerate; lesser amounts of sandstone, silt and shale
     UPPER AND/OR LOWER CRETACEOUS

KNC

NICODEMAS CREEK VOLCANICS: Volcanic brepcia and lapfill tuff; mafic to intermediate volcanic flows; volcanic conglomerate and sandstone
     LOWER CRETACEOUS

IKTC

TAYLOR CREEK GROUP: Chert-pebble conglomerate, black limy shale, green tuff, volcanic breccia, andesite and basalt

IKJM

JACKASS MOUNTAIN GROUP: Argillite, greywacke, conglomerate. and sandstone

IKv

Reddish to purple andesitic breccia and tuff
JURASSIC AND CRETACEOUS

JKRM

RELAY MOUNTAIN GROUP: Greywacke, siltstone, argillite, minor conglomerate and tuff
JURASSIC
     LOWER TO MIDDLE JURASSIC

JLC

LAST CREEK FORMATION: Brown calcareous. sandstone, sillstone and conglomerate; dark grey shale and calcareous shale

ImJS

Sandstone intercalated with lesser amounts conglomerate, siltstone and shale; thin-bedded siltstone and laminated shale

Jv

Green porphyritic andesite breccia, tuff and flows, minor argillaceous tuff
TRIASSIC
     UPPER TRIASSIC

uTT

TYAUGHTON GROUP: Shale, siltstone, sandstone, conglomerate, limestone

uTH

HURLEY FORMATION: Argillite, phyllite, sandstone, limestone, siltstone, tuff, conglomerate, andesite, chert, mudstone
uTC Massive grey limestone; minor conglomerate, shale
uTN NICOLA GROUP: Shale, greywacke, andesite, basalt siltstone, sandstone, conglomerate, limestone
PALEOZOIC AND MESOZOIC
PALEOZOIC AND TRIASSIC

PTp

PAVILION GROUP: Chert, argillite, tuff, greywacke, volcanic flows, limestone, sandstone

INTRUSIVE ROCKS

CENOZOIC
TERTIARY
     PALEOCENE AND/OR EOCENE

TRP

REXMOUNT PORPHYRY: Hornblende-biotite-quartz-feldspar porphy
EOCENE

Egd

Granodlorite, quartz monzonite, quartz diorite
MESOZOIC AND CENOZOIC
CRETACEOUS AND TERTIARY
     UPPER CRETACEOUS AND/OR LOWER TERTIARY

KTp

Felsite, hornblende. feldspar porphyry, locally grading to diorite and quartz diorite
MESOZOIC
CRETACEOUS
     LATE CRETACEOUS
LKgd COAST PLUTONIC COMPLEX: Granodlorite, quartz diorite and diorite
Kqm Quartz monzonite, minor granodlorite
JURASSIC
     MIDDLE JURASSIC

mJgd

Granodlorite, diorite and quartz diorite

OCEANIC COMPLEXES

PALEOZOIC AND MESOZOIC
MISSISSIPPIAN TO JURASSIC

MPBR

BRIDGE RIVER COMPLEX: Chert. argillite and greenstone; lesser limestone, gabbro, diabase, sandstone,conglomerate and setpentinite
            CACHE CREEK GROUP
PMCC Chert, argillite, shale, greywacke, limestone, mefic volcanic flows and tuff
PMMC MARBLE CANYON FORMATION: Massive grey limestone, minor shale
PALEOZOIC
PERMIAN

PB

BRALORNE IGNEOUS COMPLEX: Diorite, gabbro, soda granite, greenstone, amphibolite
PERMIAN AND OLDER

            SHULAPS ULTRAMAFIC COMPLEX

PSh Hatzburgite
PSm Serpentinite melange unit
Geological legend and base derived from:

McLaren, G.P. (1990): A Mineral Resource Assessment of the Chilko Lakes Planning Area, B.C. Ministry of Energy, Mines and Petroleum Resources, Bulletin 81

Roddick, J.A., Muller, J.E. and Okulitch, A.V., Compilers (1976): Fraser River; Geological Survey of Canada, Map 1386A, 1:1,000,000

Schiarizza, P (1991): Personal Communication, B.C. Ministry of Energy, Mines and Petroleum Resources

Tipper, H.W., Compiler (1978): Taseko Lakes (0920) Map Area, Geological Survey of Canada, Open File 534, 1:125,000

See Taseko Lakes (092O) 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.