Transcript
Page 1: PRECAMBRIAN1 T - Microsoft · 2018. 12. 21. · 81 WAm 81 85 76 85 70 85 f LLg 85 81 86 82 p 75 f 80 67 80 Gl t 75 85 Q 78 85 f WUp WDi 905 6327000 Not Mapped 81 [85 (77 82 77 {65

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PARKER LAKE SHEAR ZONE

81

76

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RM0201-021

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RH0201-601

RH0201-502

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RM0201-142

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Robson Lake

Warner Lake

Wathaman River

562000

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�Scale 1:20 000

64E-02 64E-0164E-03

64E-04

64E-07 64E-0864E-06

64E-05

64E-10 64E-0964E-1164E-12

64E-1664E-1564E-1464E-13

74H-01

74H-08

74H-09

74H-16

This Map

Reindeer

Lake

104

104

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102

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Location Map

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Although the Department of Industry 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 who rely on the information contained herein do so at their own risk. The Department of Industry 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.

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Catalogue Number 2002-4.2-(2.3 )

Project M.138 of 2002 The area was mapped by Ralf O. Maxeiner and Rebecca Hunter, in the summer of 2002, with the assistance of Shawna Leatherdale, Vance Hachkewich, and Jason Craven.

a were processed using Pendragon Forms, Microsoft Access, and ArcView 3.2 software. Base maps were compiled from 1:50 000 scale digital topographic maps licensed from Saskatchewan Information Services Corporation. UTM coordinates are NAD83 zone 13. The map was processed overall using ArcView 8.2 software. The map is issued in a package with the Summary of Investigations 2002 Volume 2, Saskatchewan Geological Survey, and is available separately. This map accompanies the following publication: ���������������� �������������������������������������������������������������������� �!�����"�����������#����"�!!��$��%�&�'������������������(���!�����"������������)����������"��'�$��"����&������$���������������������*�����+,��������������������� ����������������������� ����������������-�������������$��%������������������������ �!����� �����$�.�/� �0����!����'������0������������*�����%�12"�3,4+,�#�5��������������*����!�!�*������"�!!��$��%�&�'������������������(���!�����"������������)����������"��'�$��"����&������$���������������������*�����+,��

0 0.5 1 1.5 20.25Miles

0 1 2 30.5Kilometers QUATERNARY

Glacial Till, fluvioglacial sand, gravel, glaciolacustrine clay --------------------------------------------------- Unconformity ----------------------------------------------------------- PRECAMBRIAN1

Wathaman Domain

Megacrystic quartz monzonite (~1.860 Ga2): pink to pinkish grey, medium to coarse grained3, weakly foliated to mylonitic; locally cataclastic, commonly megacrystic with up to 3 cm long microcline phenocrysts; locally with 20-40 cm thick layers of pink fine-grained mylonitic granite; up to 50% K-feldspar; 20 to 30% plagioclase; and 10 to 20% quartz; 5 to 15% biotite, hornblende and/or epidote; MS4 is high and variable Wollaston Domain

Courtenay Lake Formation (~2.076 Ga5)

Quartzofeldspathic rock: pink to light pinkish grey, fine to medium grained, granoblastic, homogeneous, strongly foliated; locally gneissic; with abundant quartz veins; deformed equivalent of unit CFa and/or Gf; up to 40% K-feldspar; 20-30% quartz; plagioclase, biotite, muscovite, magnetite; high to very high MS (5-15) Quartzite: light grey to beige, fine grained, granoblastic, moderately to strongly foliated, bedded; minor layers of pebble conglomerate and feldspathic psammite; up to 10% plagioclase and K-feldspar; magnetite, biotite, muscovite – garnet; very high MS Amphibolite: dark green to greenish black; fine grained, weakly to moderately foliated; locally amygdaloidal and/or plagioclase porphyritic; rarely pillowed; locally with intercalations of garnetiferous quartz-eye dacite and biotite-hornblende-bearing intermediate volcaniclastic rock; also with minor fine- to medium-grained microdiorite; up to 70% plagioclase; 35-50% actinolite; biotite, magnetite – garnet – tourmaline – anthophyllite – pyrite; very high MS (50-100) Feldspathic arenite6: light pink to light grey, fine grained, weakly to moderately foliated; schistose, bedded, with local cross-bedding, rare pebbly beds; up to 50% K-feldspar, up to 30% quartz, plagioclase, biotite, muscovite, magnetite; very high MS (20-30) Cobble conglomerate: light pink to pink, poorly sorted, well foliated; fine-grained matrix of feldspathic psammite; strongly flattened pebbles and boulders of leucogranite, vein quartz, amphibolite, and pink fine-grained felsic rock; granules of quartz and feldspar; medium to thickly bedded; interbedded with feldspathic psammite; K-feldspar, plagioclase, quartz, biotite, muscovite, magnetite; very high and variable MS (10-30) Peter Lake Domain

Monzonitic Intrusive Suite

Monzonite: grey to pinkish grey, medium to coarse grained, homogenous, moderately to strongly foliated; locally mylonitic; commonly with 1-2 cm long K-feldspar megacrysts; gradational into monzodiorite, syenite and quartz monzonite; cut by granite pegmatite dykes; 30-60% microcline; 30-40% plagioclase; up to 10% biotite; up to 10% hornblende; up to 5% quartz; – epidote; high to very high MS Monzodiorite: light pink to pink, medium to coarse grained, homogenous, moderately foliated; locally plagioclase megacrystic; gradational into monzonite, diorite and quartz monzodiorite; plagioclase, K-feldspar; up to 10% biotite; up to 5% epidote; quartz – hornblende; variable MS Quartz monzonite: light pink to pink, medium to coarse grained, homogeneous, weakly to strongly foliated; locally mylonitic; commonly with up to 3 cm long K-feldspar megacrysts; 30-40% microcline; 20-30% plagioclase; 5-10% quartz; 10-15% biotite; up to 5% hornblende and/or epidote; – carbonate; moderate to very high MS Quartz monzonite gneiss: pink to grey, fine to coarse grained, moderately to strongly foliated; gneissic layering; in part megacrystic; 30-40% microcline; 20-30% plagioclase; 5-10% quartz; 10-15% biotite; up to 5% hornblende; variable MS Intrusive Rocks of undetermined affinity

Granite pegmatite: pink, coarse to very coarse grained, massive to weakly foliated; microcline, quartz, plagioclase, biotite – muscovite – magnetite; low MS Pb beryliferous pegmatite Amphibolite: greenish black to black, very fine to fine grained; plagioclase, hornblende – biotite – epidote – riebeckite; in part derived from mafic dykes; moderate to very high MS Fluoritic syenogranite (2.086 Ga7): salmon pink to moderate orange pink, medium to coarse grained, equigranular, homogeneous, massive to weakly foliated; locally mylonitic; locally cut by quartz veins, mafic dykes and granitic pegmatite dykes; 40-50% microcline; 30% quartz; 10-20% plagioclase; 5-10% biotite; magnetite, monazite, apatite, zircon – chlorite – muscovite – fluorite; high MS Leucogranite: pink to brick red, fine to medium grained, equigranular, leucocratic, massive to weakly foliated; cut by mafic dykes; 30-40% microcline; 20-30% quartz; 20-30% plagioclase; <5% biotite; magnetite; high MS Glq quartz and/or feldspar porphyritic Granite, Syenogranite: light pink to moderate pink, coarse grained to very coarse grained, massive to weakly foliated; 30-40% microcline; 20-30% quartz; 20-30% plagioclase; 10-15% biotite – hornblende; magnetite; low to moderate MS

Granite (2.566 Ga7): salmon pink to brick red, coarse grained, homogenous, massive to weakly foliated; locally mylonitic; in part megacrystic; gradational into granodiorite and quartz monzonite; intruding older quartz monzonite; 25-40% microcline; 15-30% quartz; up to 30% plagioclase; 5-10% epidote; up to 5% biotite; high to very high MS Seriate syenogranite: mottled pink to grey, medium to very coarse-grained, equigranular to seriate, homogeneous, massive to weakly foliated; 30-50% microcline; 25-30% quartz; 20% plagioclase; 5-15% biotite; low to high MS Megacrystic/augened granite: pink to moderate orange pink, coarse to very coarse grained, megacrystic, homogeneous, moderately to strongly foliated; locally mylonitic; with 1-2 cm long pink microcline phenocrysts ; cut by mafic dykes and granite pegmatite; 30-40% microcline; 30% quartz; 20-30% plagioclase; 10-15% biotite; magnetite – fluorite; high MS Hornblende-biotite granite: pink, medium to coarse-grained, equigranular, homogeneous, massive to weakly foliated; 30-50% microcline; 25-30% quartz; 20% plagioclase; 5-10% hornblende; 5-10% biotite; low to high MS Granitic gneiss: grey to yellowish brown, fine to medium grained, equigranular, moderately foliated; gneissic layering; K-feldspar, plagioclase, quartz, biotite, hornblende, magnetite; very high MS Granodiorite: light pink to light pinkish grey, medium grained, moderately to strongly foliated; locally megacrystic; plagioclase; 20-30% quartz; 15-20% microcline; 5-10% biotite; 5-10% hornblende; high MS Granodiorite gneiss (?2.580 Ga8): grey to pinkish grey, fine to medium grained, moderately foliated; gneissic layering; cut by mafic dykes; 50% plagioclase; 20-30% microcline; 5-10% hornblende; 5% biotite; monazite; moderate MS Quartz diorite: light to medium grey, medium to coarse grained, equigranular, homogenous, weakly foliated; cut by granite pegmatite; locally associated with blue quartz-bearing granodiorite; up to 60% plagioclase; 10-20% quartz; up to 15% hornblende; 5-10% biotite; up to 10% K-feldspar; epidote; magnetite; very high MS Diorite: black and white, medium grained, equigranular, homogeneous, massive to weakly foliated; locally gradational into quartz diorite; plagioclase; 10-20% hornblende; up to 10% biotite; – epidote – quartz; low to moderate MS Combe Lake Intrusive Suite

Diorite: black and white, medium grained, homogeneous, equigranular, moderately to strongly foliated; 50-70% plagioclase; 15-35% hornblende; up to 10% biotite – epidote – titanite – pyrite; moderate MS Gabbro: black and white, medium grained, homogeneous, equigranular, moderately to strongly foliated; locally grading into ultramafic rocks; 30-50% plagioclase; 35-50% hornblende; up to 10% biotite – epidote – pyrite – magnetite – pyrrhotite – chalcopyrite; high to very high MS Warner Lake Gabbroic Suite

Diorite: mottled black and white to grey, medium to coarse grained, equigranular, massive to strongly foliated; locally mylonitic; gradational into quartz diorite and gabbro; cut by less deformed quartz monzonite and granite; 50-60% plagioclase; 15-35% hornblende and/or biotite; up to 5% quartz; epidote – magnetite – carbonate – chlorite – pyrite; moderate MS Gabbro: speckled black and white, dark grey to greenish black, medium grained, equigranular, massive to strongly foliated; commonly heterogeneous and mylonitic; rare igneous layering; locally gradational into ultramafic rock; locally cut by dioritic and monzonitic rocks; 35-60% hornblende, up to 60% plagioclase; epidote, biotite, magnetite – serpentine – pyrite – pyrrhotite – chalcopyrite; moderate MS, locally high MS Quartz diorite: mottled grey to black, coarse grained, homogeneous, equigranular, moderately to strongly foliated; up to 50% plagioclase; 20% hornblende; 15% quartz; 10% biotite; up to 10% K-feldspar; epidote; variable MS Pyroxenite: dark green to greenish black, coarse to very coarse grained, homogenous, massive to strongly foliated; grading into actinolite schist where more deformed; locally gradational into gabbro; variably recrystallized; up to 90% amphibole (actinolite and/or hornblende); and/or up to 60% clinopyroxene; <10% plagioclase; biotite, chlorite, epidote, pyrite, pyrrhotite; moderate MS Amphibolite: dark green to dark grey, fine to medium grained, equigranular, strongly foliated; possibly derived from units WGa and WDi; in part possibly of supracrustal origin; 40-60% hornblende and/or actinolite; up to 50% plagioclase; biotite, quartz, epidote, chlorite – carbonate – pyrite; moderate MS Love Lake Leucogabbro (? 2.562 Ga2)

Leucogabbro: light bluish grey to grey, medium to coarse grained, homogenous, equigranular, massive to weakly foliated; locally with abundant subangular mafic to ultramafic xenoliths; in part gradational into gabbro, anorthosite, or diorite; up to 80% plagioclase (labradorite); up to 25% hornblende; up to 10% relict clinopyroxene; up to 5% magnetite, pyrite – epidote – quartz – actinolite – biotite – ilmenite – hematite; 15-25% mafic mineral content; very high MS (50-100) Diorite: speckled black and white, dark grey, medium grained, equigranular, homogenous, weakly foliated; up 70% plagioclase; 15-25% hornblende; up to 10% biotite; epidote – quartz – pyrite – magnetite; low MS Gabbro and Melagabbro: dark greenish grey to greenish black, medium to coarse grained, massive to weakly foliated; 40 to 80 percent amphibole (hornblende and/or actinolite); up to 50 percent plagioclase; relict clinopyroxene; magnetite – orthopyroxene – epidote – biotite – microcline – pyrite – pyrrhotite; variable MS, locally very high

Anorthositic rock: light bluish grey to white; medium grained, homogeneous, massive to weakly foliated; grading into leucogabbro and diorite; locally with centimetre-scale rhythmic igneous layering between leucogabbro and anorthosite; up to 90% plagioclase; up to 15% hornblende; up to 5% biotite; 5-15% mafic mineral content; up to 5% relict clinopyroxene; very high MS Ultramafic rock: dark green to black, fine to medium grained, weakly foliated; in part derived from pyroxenite; up to 95% hornblende and or tremolite-actinolite; up to 5% plagioclase, serpentine, magnetite – chlorite – olivine; variable MS Parker Lake Gneisses

Quartz diorite gneiss: composite unit of dioritic to granodioritic orthogneisses; light grey, pinkish grey to dark grey, fine to coarse grained, heterogeneous, inequigranular, locally porphyroclastic, moderately to strongly foliated; commonly with gneissic layering on centimetre to decimetre scale; with fine-grained amphibolitic and psammitic layers; locally homogenous diorite, quartz diorite or granodiorite; commonly with later leucogranite, quartz monzonite and pegmatitic granite sheets; plagioclase, quartz, microcline, hornblende, biotite, 5-20% mafic mineral content; MS variable from low to very high Granodiorite to tonalite (2.566 Ga8): light pinkish grey to grey, medium to coarse grained, homogenous to heterogeneous, strongly foliated; interlayered with quartz dioritic components of PQd and xenoliths of amphibolite; cut by granite pegmatite and aplite; plagioclase; 15-30% quartz; 5-20% microcline; 5-10% hornblende; 5-10% biotite; zircon with secondary overgrowth; epidote, titanite; low MS Amphibolite, Gabbro: black to greenish black, fine to medium grained, heterogeneous, strongly foliated; locally ultramafic; cut by granodioritic and granitic veins; plagioclase; 35-60% amphibole (hornblende and/or actinolite); biotite; variable MS Ultramafic rock: black to dusky green, fine grained but knobbly weathering due to originally coarse-grained texture, homogenous, massive to weakly foliated; recrystallized pyroxenite; 80-90% actinolite after pyroxene; 10% biotite; plagioclase, sericite; low MS Supracrustal Rocks

Campbell River Group Quartzite: interbedded succession of pebbly feldspathic wacke, subarenite, quartz arenite, and argillite; light grey to black, very fine grained to fine grained, weakly foliated; locally schistose; fining-upward succession; primary bedding features indicate younging to the north and include ripples, cross-bedding, ball and pillow structures, and scouring; locally with blue quartz granules; quartz, microcline, plagioclase, biotite, muscovite – andalusite Felsic volcanic rock: light grey to beige, fine grained, well foliated; layered; includes tuff breccia, feldspar porphyry and aphanitic components; quartz veins; up to 50% plagioclase; 20-30% quartz; up to 15% K-feldspar; 5-10% biotite; muscovite – garnet – epidote; low MS Migmatitic psammopelite-pelite: white to medium grey, fine to medium grained, heterogeneous, granoblastic, moderately to strongly foliated; gneissic; migmatitic with 10-20% locally derived tonalitic leucosome; in part agmatitic with leucosome intruding intercalated amphibolite; compositionally variable from pelitic to psammitic; locally layered with intercalations of ferruginous psammite and silicate-facies iron formation; up to 60% plagioclase; up to 40% quartz, 10-30% biotite; – garnet – cordierite – graphite – magnetite; variable MS Diatexite: white to light grey, medium to coarse grained, leucocratic, homogeneous to gneissic, weakly to moderately foliated; tonalitic in composition; with up to 5% psammopelitic paleosome; up to 60% plagioclase; 25-30% quartz; up to 5% K-feldspar; biotite; generally low MS Psammitic gneiss: medium grey to buff, very fine to fine grained, moderately foliated; locally layered; in part migmatitic; intruded by diorite, granodiorite and/or granite pegmatite; up to 50% plagioclase, up to 40% quartz, 5-10% biotite; up to 10% K-feldspar; – hornblende – muscovite – carbonate – epidote; low MS Psg with intercalations of conglomerate Amphibolite: greenish black to dark grey, very fine to fine grained, moderately to strongly foliated; locally layered, feldspar phyric and/or with epidote pods; possibly of volcanic origin; cut by tonalitic and granitic veins and dykes; up to 60% plagioclase; 35-50% hornblende; up to 10% biotite; – epidote – quartz – magnetite – pyrite; variable MS Mfp feldspar porphyritic; possibly of subvolcanic origin Mfh hornblende porphyroblastic 1 the prefix meta- has been omitted as all rocks have been metamorphosed 2 e.g. Corrigan, D., Maxeiner, R.O. and Harper, C.T. (2001): Preliminary U-Pb

Results from the La Ronge-Lynn Lake Bridge Project; in Summary of Investigations 2001, Volume 2, Saskatchewan Geological Survey, Sask. Energy Mines, Misc. Rep. 2001-4.2, p111-115.

3 grain size limits: very fine (<0.5 mm); fine (0.5-1mm); medium (1-5 mm); coarse (5-10 mm); very coarse (> 1cm)

4 MS: magnetic susceptibility outcrop average (in 10-3 SI); readings are grouped into very low (< 0.10), low (0.10 to 0.49), moderate (0.50 to 0.99), high (1.00 to 10), and very high (> 10.00) categories; averages are given in brackets were appropriate.

5 Ansdell, K.M., MacNeil, A., Delaney, G.D., and Hamilton, M.A. (2000): Rifting and development of the Hearne craton passive margin: age constraints from the Cook Lake area, Wollaston Domain, Trans-Hudson Orogen, Saskatchewan (extended abstract); GeoCanada 2000, May 29-June 2, Calgary, Canada, compact disc.

6 the term arkose is discontinued and replaced with ’feldspathic ; see: Maxeiner, R.O., Gilboy, G.F. and Yeo, G.M. (1999): Classification of metamorphosed clastic sedimentary rocks: a proposal; in Summary of Investigations 1999, Saskatchewan Geological Survey, Sask. Energy Mines, Misc. Rep. 99-4.1, p89-92.

7 Annesley, I.R., Madore, C., and Krogh, T.E. (1992): U-Pb geochronology of some granitoids from the Peter Lake Domain: a summary; in Summary of Investigations 1992, Saskatchewan Geological Survey, Sask. Energy Mines, Misc. Rep. 92-4, p168-171.

8 Bickford, M.E., Rayner, N.M., and Stern, R.A. (2002): The exotic origin of the Sask craton, Trans-Hudson Orogen revealed by new SHRIMP zircon U-Pb ages; GAC-MAC Joint Annual Meeting, Saskatoon, Saskatchewan, Abstracts Volume 27, p10.

Legend

MQm

CQf

CQz

CAm

CFa

CCg

Mz

Mzd

Qm

Qmg

P

Am

Gf

Gl

G

Agr

Gs

Gm

Gh

Gg

Gd

Gdg

Qdi

Di

BDi

BGa

WDi

WGa

WQd

WUp

WAm

LLg

LDi

LGa

LAn

LUp

PQd

PGd

PAm

PUp

CRG

Fv

Psp

Ppd

Ps

Mf

Symbols

Geological contact: defined to approximate High strain zone Fault Outcrop examined Felsenmeer, Blockfield, Boulderfield Glacial striae Mineral occurrence: az - azurite, cpy - chalcopyrite, fl - fluorite, il - ilmenite, mag - magnetite, mal - malachite, po - pyrrhotite, py - pyrite, ru - rutile, sph - sphalerite Sample location with available geochemistry (see report) Approximate sample location of historical geochronology data with footnote reference (see report for details) Bedding: top unknown, top known, overturned Main foliation (1st and 2nd generation) (schistosity, gneissosity): dip unknown, inclined, vertical 3rd generation foliation: inclined, vertical Fold axial plane (inclined): age unknown, 1st generation and 2nd (tight to isoclinal) generation, 3rd generation (ENE trending, upright, close to tight), 4th generation (NNE trending, open) Fold axial plane (vertical): age unknown, 1st generation and 2nd (tight to isoclinal) generation, 3rd generation (ENE trending, upright, close to tight), 4th generation (NNE trending, open) Small ductile shear (inclined): sense unknown, sinistral, dextral Small ductile shear (vertical): sense unknown Small brittle fault (inclined): sinistral, dextral Small brittle fault (vertical): sinistral, dextral Fracture: inclined, vertical Lineation (unknown age): unknown type, stretching lineation Fold axis (symmetry unknown): age undefined Fold axis (symmetrical): age undefined Fold axis (s-fold): age undefined Fold axis (z-fold): age undefined Traverse path in poorly exposed areas Esker Muskeg Contour line (contour interval 10 metres) Spot elevation (metres) Gravel pit Campground Fishing lodge Microwave tower Highway (digitized from 2000 airphotos) Highway Km marker Trail {XX} - indicates that an area contains minor proportion of

rock XX (XX) - indicates that an area is intruded by rock XX [XX] - indicates that an intrusive rock contains xenoliths

of rock XX

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RM0201-113

2566–8 Ma (8)

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