3 2 ph s( b l c ) reconnaissance bedrock geology, eastern...
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Cgr
Cg
Lg
Cgr
QdCg
Qdp
Lg
Dpp
Qdp
QdaQdp
QdCg
Qda
LgQd
Lg
Lg
Qdp
Cg
Lg
LgQdQda
Qda
Qdp
Qdp
LgQd
Qdp
Qda
Qda
Cgr
Qda
Qda
Qdp
QdCg
Lg
QdCg
QdpLg
Lg
Cgr
Lg
Cgr
Lg
Lloyd Lake
Lloyd Lake
Gibson Bay
Ferrie Peninsula
Clearwater River
Clearwater River
258000
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108°45'0"W
108°45'0"W
109°0'0"W
109°0'0"W
57°20'0"N
57°20'0"N
Catalogue Number 2009-4.2-(2.3)
This Map
Location Map
Lake
Lake
Lake
Lake
Lake
Lake
Lake Kelic
Careen
TurnorHeddery
Ithingo
Preston
Wasekamio
Lloyd Lake
Black Birch
074F02 074F01
074F07 074F08
074B13
074F06
074C15 074C16
074G04074F03
074G05
074C14
074C10 074C09074C11 074B12 074B11
074G12074F09
074B14
074G03
074G06
074F10 074G11074F05
-108°
-108°
-109°
-109°
57°57°
Scale 1:20 000
Accompanying Sheets
Legend Symbols
Inclined axial plane, third generation Inclined foliation, first generation Inclined foliation, third generation Inclined foliation, fourth generation Intersection lineation, third generation Z fold, third generation Regional trends of S1 foliation interpreted from foliation measurements and aeromagnetic images Lineament (presumed brittle-ductile fault) Geological contact Swamp Contour (10m interval)
Reconnaissance Bedrock Geology, Eastern Lloyd Lake (Parts of NTS areas 74F06 and 07) at 1:20 000 scale
Preliminary Geological Map (2009)
by C.D. Card
Lg
Cg
0 0.5 1 1.5 20.25Kilometres
0 0.25 0.5 0.75 10.125Miles
The area was mapped by C.D. Card in the summer of 2009. This map was printed from the geologist’s digital file. Geological data were processed using ArcPad 7.0.1, Microsoft Access, and ArcView 9.3 software. Base maps were compiled from 1:50 000 scale digital topographic maps licensed from Saskatchewan Information Services Corporation. Grid coordinates are NAD 83 UTM zone 13. The map was processed overall using ArcView 9.3 software. Radiometric data included in the legend were measured using Radiation Solutions RS-230 handheld spectrometers. Measurements are reported as equivalent values, e.g. eTh. The map is available on the internet at www.er.gov.sk.ca. The map accompanies the following report: Card, C.D. (2009): Cree South Project 2009: Reconnaissance bedrock mapping in the Lloyd Domain and Virgin River Shear Zone; in Summary of Investigations 2009, Volume 2, Saskatchewan Geological Survey, Sask. Ministry of Energy and Resources, Misc. Rep. 2009-4.2. This map may be referenced as: Card, C.D. (2009): Reconnaissance bedrock geology, eastern Lloyd Lake (parts of NTS 74F06 and 07), 1:20 000 scale prelim. map with Summary of Investigations 2009, Volume 2, Saskatchewan Geological Survey, Sask. Ministry of Energy and Resources, Misc. Rep. 2009-4.2.
Qt Glacial drift and outwash
UNCONFORMITY D3 deformation, M2 metamorphism (amphibolite facies)
Lg Leucogranite: white to pink, medium grained, seriate; massive to weakly foliated (S3); forms centimetre- to metre-scale sheets parallel to the S1 foliation in other units; 1-5% biotite ± magnetite; eTh1 generally 50-140 ppm; eK generally 1-5%.
LgQd Comprises relatively equal proportions of units Lg and Qd.
INTRUSIVE CONTACT
D1-D2 deformation, M1 metamorphism (granulite facies)
Cg Charnockitic granite: pink, waxy on fresh surfaces, medium to coarse grained, seriate; weakly to moderately foliated (S1 and S3); 5-10% pyroxene ± biotite ± magnetite; local layers of Qdp and pyroxene-bearing tonalite.
Cgr Retrogressed charnockitic granite: pink, fine to medium grained; strongly foliated
to mylonitic; 5-10% biotite ± magnetite; commonly mixed with and difficult to distinguish from unit Lg.
Quartz diorite to diorite (ca. 1985 Ma2)
Qda Retrogressed quartz diorite to diorite: grey, medium grained, equigranular; moderately to strongly foliated; 15-30% biotite after pyroxene ± relict pyroxene ± hornblende ± magnetite; local layers of retrogressed tonalite and retrogressed granodiorite.
Qdp Pyroxene-bearing quartz diorite to diorite: grey on weathered surface, dark grey to
blue on fresh surfaces, granular, medium grained; poorly to moderately developed, flat-lying S1 and near upright S3 foliations, plagioclase-rich melt layers; quartz diorite end member most common; 30-40% combined clinopyroxene and orthopyroxene, blue grey plagioclase and quartz ± biotite ± magnetite; local layers of units pyroxene-bearing tonalite.
QdCg Mixed chanockitic granite and quartz diorite to diorite: comprises about equal proportions of
units Cg and Qd.
INTRUSIVE CONTACT
Dpp Pelitic diatexite: white to rusty, medium-grained ground mass with garnet porphyroblasts up to 5 mm in diameter; weak compositional layering; moderately to strongly foliated; 5% garnet porphyroblasts, 3-15% biotite, 0-5% sillimanite in patches and centimetre-scale layers, 1-3% graphite; derived through nearly complete to complete melting of psammopelitic to pelitic protoliths, rare xenoliths of psammite and diatexitic psammopelite to pelite occur in unit Qd. 1 K, U and Th values referred to in this report are equivalent concentrations measured on an RS-230, hand-held spectrometer. 2 SHRIMP U-Pb zircon age determination. Stern, R.A., Card C.D., Pana, D. and Rayner, N. (2003): SHRIMP U-Pb ages of granitoid basement rocks of the southwestern part of the Athabasca Basin, Saskatchewan and Alberta; in Radiogenic age and Isotopic Studies, Rep. 16, Geol. Surv. Can., Curr. Res. 2003-F, 20p.
Although the Ministry of Energy and Resources has exercised all reasonable care in the compilation, interpretation, and production of this item, it is not possible to ensure total accuracy, and all persons that rely on the information contained herein do s o at their own risk. The Ministry of Energy and Resources and the Government of Saskatchewan do not accept liability for any errors, omissions or inaccuracies that may be included in or derived from, this item.
LgQd
Cgr
Qd
Qdp
Qda
QdCg
Dpp