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OF THE AVALON LEGEND OI I OI OI 54 15 I I I I I OI I I 10 54 00 50 40 30 20 10 53 00 50 40 52 30 OI OI Dark gray, fine grained diabase dikes 48 15 48 15 PENINSULA, Georges K/Ar 201 ± 2.6 Ma (whole rock) (Hodych and Hayatsu, 1980) Rocky Delbys exposure positive aeromagnetic anomaly Brook 100 500 Ragged Pond500 Lady Popes Cove F West Pt. Islands F Harbour 100 20 Diabase and diorite dikes containing euhedral plagioclase (parts of 1K, 1L, 1M, 1N and 2C) Pond Ireland’s Eye Pt. cly Barton phenocrysts F Ireland’s 100 10 Milton Grindstone 0 500 Eye Ireland’s Eye F Hd. F 40 IONA ISLANDS INTRUSIVE SUITE GRANITE LINE 30 F Harcourt Anthony I. IONA ISLANDS Clarenville POWDER HORN Monroe Ivanhoe Pink to red, medium grained, biotite granite 75 Th 5 Scale 1:250 000 INTRUSIVE DIORITE COMPLEX OR EARLIER Map 88-01 cly e Bri White 50 T Green I. Gray, medium grained diorite, gabbro and olivine gabbro Granite h SUITE Somerset Rock 00 Gin o 15 1 30 Thoroughfare r Shoal Mn o Cove u POWDER HORN DIORITE COMPLEX 50 20 (Digital reproduction) Harbour Lst g Reddish-pink, medium grained granite and granite dikes and H h Red T f 0 5 10 15 20 25 Grates Fine- to medium-grained diorite, gabbro and minor granite I 10 a 10 ND sills, locally containing abundant gabbro inclusions Pt. M r 1 0 cly S Lst 0 e Point Pigeon 10 T I Clarenville Aspey 55500 F Stn SOU L I Snooks Pt. U Grates Cove Geology compiled by A. F. King 10 100 Brook Lst Silldown Pt. 10 10 F Mn A Harbour Fagans 40 Breakheart Point Diabase, diorite and gabbro sills (?) 35 F Duck I. BACCALIEU Tilton Hd. Pond kilometres 30 North Bird I. 25 DE VERDE SYNC Clarenville cly Goldmine Head F Map series edited by S. P. Colman-Sadd and J. P. Hayes South

Fe 500 South Bird I. AY Sla E B WABANA GROUP (individual formations not separated on map) Elliot’s Brittania V 10 20

F 30 30 00 Baccalieu O East Hd. Cove Contours in feet above maen sea level. Contour interval 100 feet. 1 30 C TICKLE

15 Daniel’s Gravel Head Formation: dark shale; layers of phosphatic and ACKNOWLEDGEMENTS Red Head Cove Island 500 500 Cove 15 15 hematitic ironstone and silty shale near base

Verge I. F N Previously unpublished mapping by A.F. King benefitted Copies of this map may be obtained from the Geoscience O Weybridge Cooks 30 Gull Island Formation (Upper Ore Bed): oolitic reddish-brown M Fe Sla 500 greatly during its early stages from the guidance of W.D. Publications and Information Section, Geological Survey, N Hickman’s Harbour L Cove ironstone A Split Pt. 500 F O Lady Cove S Deep Sla Bruckner (), V.S. Papezik (Harbour Main Department of Mines and Energy, P.O. Box 8700, St. John’s, 20 10 East Random Hd. 50 100 R 0 0 Bight 50 Stn 50 45 Grebes Nest Point Formation: dark shale, siltstone, and sand- LOWER T 20 20 Perlican I. Newfoundland, , A1B 4J6. Group) and T. Fletcher ( biostratigraphy, St. H Lady 45 25 e W ARM 35 E S d stone T Pt. Stn 25 r F Lst 40 30 e Mary’s peninsula). Special thanks are extended to M.M. http://www.geosurv.gov.nf.ca Arenig Adeytown 100 V E HARCOURT GROUP (individual formations not separated on map) 50 10 55 100 e IN d L Anderson, T. Calon, B. Greene, J. Malpas, S.J. O’Brien, C.F. 25 y IC Scotia Formation (Middle Ore Bed): oolitic, reddish-brown 500 D 60 a T O U N 10 B N O’Driscoll, G. Parsons, R.K. Stevens and H. Williams for R AND O M S A Clarenville Formation: gray to black, micaceous shale; minor ironstone New Low Point 50 20 Lead D siltstone containing cone-in-cone limestone concretions comments made in the field and for informal discussions. 500 West Random Hd. Melbourne 10 EA WABANA GROUP St. Jones 0 Cove H Tremadoc 10 Powers Steps Formation: graptolitic shale and minor siltstone Within Sla 5 Sibleys 35 Capable field assistance was provided by J. Hill, T. Brace Geological cartography by Tony Paltanavage. Southport O Elliott Cove Formation: gray, green to black, silty, micaceous and ; phosphatic and pyritic, oolitic ironstone at base Pb Cove R and D. Andrews. Hillview Long I. B shale, slate and siltstone; limestone concretions North West Hatchet M Upper Redmans Fm. LA Brook Cove 0 Cambrian H. Miller and J. Tod are thanked for the interpretation of 500 50 Gooseberry Cove Brownsdale F Little Heart’s 10 70 BELL ISLAND GROUP (separated into lower, upper and Redmans Southeast Pt. Hants Hd. Manuels River Formation: black shale and lenses of limestone; 50 ARMCaplin Ease geophysical data, and C.F. O’Driscoll for the compilation 35 100 30 55 New Chelsea Flambro Hd. Formation on map) S O U T 40 Hodge’s Cove mafic pillow lava and pyroclastics, including Hay Cove and Recommended citation: of the mineral occurrences. 5 100 H W E S T Cove members 00 500 Dominion Formation (Lower Ore Bed): oolitic, reddish-brown Long 00 The offshore geological data were provided by the King, A.F. OI 40 Island Cove 45 1 Island Fe OI 48 00 Beach Lower Island Cove 48 00 ironstone Pond Atlantic Geoscience Centre, Geological Survey of Canada, 1988: Geology of the , Newfoundland 35 15 80 E ADEYTON GROUP (individual formations not separated on map except Bald Hd. Pittmans NOTE: Ochre Cove Formation: interbedded, thin sandstone and shale, and have been published previously in a less detailed form (parts of 1K, 1L, 1M, 1N and 2C). Newfoundland Department 500 IN 10 45 L 20 Pond Smith point Formation)

10 and glauconitic sandy siltstone Arenig(?) T C 0 30 10 0 in King et al., 1986. Special thanks are extended to G.B.J. of Mines and Energy, Map 88 – 01. I 50 5 Fe 500 T 55 10 The purchaser agrees not to provide a digital reproduction or copy of this product to a UL N 75 00 ? UPPER CAMBRIAN(?) TO Fader for his assistance in compiling the data for this map. 5005 5 Chamberlains Brook Formation: green and red shale or slate 45 45 A 25 80 REDMANS FORMATION 0 10 third party. Derivative products should acknowledge the source of the data. T 00 Winterton 50 and thin limestone beds; manganiferous bed near base; spilitic ? LOWER ORDOVICIAN FA 500 Fe Funding for part of this project was provided by the 5 Cambrian Middle 00E Burnt Point Gray to white orthoquartzite and minor siltstone 5 GROUP ISLAND BELL St. Jones Hd. N cherty pillow lava, including Cape Dog and Hopeall Head Natural Sciences and Engineering Research Council of E AUL I F L Gull Island 00 members 5 Western C 1 NC I Beach Formation: micaceous siltstone, shale and sandstone; Canada under Grant A-7052 to A.F. King. T Centre for Earth Resources Research, Department of Pond E DISCLAIMER: 70 N minor oolitic ironstone (McGraw and Eastern Head members) HA 45 N Northern Bay C 00 A I The base map was assembled by the Geological Survey C L Formation: red, pink and green shale or slate and thin 1 Earth Sciences, Memorial University of Newfoundland, 500 L . IL Bk 500 40 C5 limestone beds; basal conglomerate where formation rests H Bay of Canada from maps published at the same scale by the 20 10 N The Geological Survey, a division of the Department of Mines and Energy (the “authors Little Bell Island Formation: white sandstone interbedded with St. John’s, Newfoundland A1B 3X5. North Hd.

EACH 75 Y 15 Northern15 directly on rocks 100 B 80 S Fe and publishers”), retains the sole right to the original data and information found in any dark silty shale Surveys and Mapping Branch, Department of Energy, Mines 15

50 500 55 BY 30 Fe A product produced. The authors and publishers assume no legal liability or and Resources in 1970, 1971. Tremadoc(?) E SMITH POINT FORMATION E 500 Ochre Pit Cove Kellys Island Formation: dark silty shale and thickly bedded\ S responsibility for any alterations, changes or misrepresentations made by third parties R HARCOURT GROUP 1 L The bathymetric contours were provided by the Canadian 00 D Pink massive limestone containing red shale partings and algal 0 OME T 500 E 30 quartzose sandstone 0 B A Y N with respect to these products or the original data. Furthermore, the Geological 5 C N Deer H 10 structures H O Hydrographic Service from the Natural Resource Map series E a C r Deer Harbour Hd. 15 C b P Fe Survey assumes no liability with respect to digital reproductions or copies of original o 45 35 u Western Bay Hd. and from unpublished maps. NG r MIDDLE CAMBRIAN(?) TO 500 5 Souther Pt. 20 products or for derivative products made by third parties. Please consult with the O 0 Bonavista Formation (locally absent): red, green and purple shale 15 L 0 Western Bay LOWER ORDOVICIAN 1 0 Big I. 500 15 0 S Geological Survey in order to ensure originality and correctness of data and/or or slate and thin limestone beds; local quartz-pebble 5 Heart’s N

Sunnyside SPREAD EAGLE GABBRO (and equivalents) Sia A products. conglomerate at base SYMBOLS 75 Content 10 75 MIDDLE CAMBRIAN(?) M 500 T Diabase and gabbro (may feed Cambrian volcanic rocks) Thames Harbour Pt. 25 100 W I Adams Cove 100 E P ADEYTON GROUP

Come By 500 10 N 0 25 Y Cambrian Lower Chance 15 50 GENERAL MINERAL OCCURRENCES B Blackhead LOWER TO MIDDLE 25 50 Smith Point Formation 1 u I 00 20 Bk. CAMBRIAN l Broad Cove A I 50 E 50 l 15 Status Commodity IN ove Geological contact (defined, approximate, . L Long Br C 5 White orthoquartzite interbedded with green, gray and red d oa 500 Random Formation 00 C d 100 LOWER CAMBRIAN ROWN P Pd. 20 B 80 C e Kingston arkose and siltstone; local basal conglomerate assumed, gradational) ...... YN v Cape unconformity o S C 74 St. Francis Pruducer ...... Au Gold 100 l Niagara Pt. 20 24 a 35 e 70 S 20 Pb 80

1 Heart’s Cu Crown Hill Fm. Barite 00 30 30 Fault (defined, approximate, assumed, thrust) ...... Ba Po

Lst A ITY 20 Desire 500 Piccos Brook Developed prospect ...... Brick shale Bri r Po 100 Member Perry’s Cove Cu Heart’s m Po e Cu Bedding tops known (inclined, overturned, l 30 Cly Clay k N Desire 40 ic 20 20 Past pruducer (dormant) ...... JACKS 20 50 T ST Fm. Cape horizontal) ...... Cu Copper l 500 l 0 Heart’s Delight Pb 50 Pouch u 15 Flat 10 Dtm RU Ballard 0 B Bull.I. Victoria Cove Dtm Diatomaceous Gull H Rocky Trinny Arnold’s 50 50 50 25 Rock Past producer (exhausted) ..... POND 150 T Formation Pd. Harbour Cove Bedding tops unknown (vertical) ...... Cove Lst earth Cove 25 Freshwater 500 (not listed in stratigraphic order) Fm. Fm. Heart’s

35 OCK Fm. Fe Iron Great 15 (not listed in stratigraphic order) Ba 28 TRI 500 20 Content Prospect ...... 15 Mn 500 R Cleavage (inclined, vertical) ...... Southern F Fl Fluorite 28 AULT N T Undivided sedimentary rocks Fm. Harbour 40 20 Carbonear I. A 500 500 Carbonear Blackhead BAY DE VERDE FORMATION 1 k. 0 Ba 20 35 FL Bay B Knobby Lst Limestone 0 70 red and gray, white-weathering sandstone, Showing ...... 20 Ba 00 CROWN HILL FORMATION Old Perlican Member: Axis of minor fold (plunging) ...... 500 5 Bristol’s Hope O 20 Red Hd. Hill Mr. Formation Southern Long LILLY UNCONFORMITY . 20 siltstone and red mudstone Mo Molybdenum r Pb Ba Masters Hd. Cavendish Red pebble conglomerate and sandstone; locally, red siltstone Harbour H 50 Cove Lst 1 500 Tickle Harbour 00 25 n I 0 at base; minor green conglomerate Indication ...... Mn Manganese r Pt. Pond Fold axis (anticline, syncline, with direction e Ba Ba h 500 20 Baccalieu Member: red pebble to cobble conglomerate and t Western Hd. 500 30 0 Islands e Flat Rock u 10 50 10 50 100 o Bay de Pb Lead o Sh sandstone; minor mudstone S 0 Ba T ROCKY HARBOUR FORMATION of plunge ...... e 500 Feather Pt. Maturin Ponds tl 21 Verde it Whit e Yellowish-green, cross-bedded, lithic sandstone Ferry- Po Pyrrhotite L Ba ewa E e Ore Hd. Formation Pb Ba y Ba 30 N Harbour Formation e Au 100 y 100 I land Cooks Cove Member: green to gray sandstone and interbedded h 500 L ur Grac P 500 Pph Pyrophyllite c 70 15 Ocean 15 Grace Unconformity (shown on legend and n Green Hd. Whiteway IC 20 yants Cov Head siltstone a Pd.25 T 0 Harbo Br TRINNY COVE FORMATION M35 N 50 Spare Pt. Bay Pyr Pyrite L a Ba Maddox Cove Mr. Fm. stratigraphic section only) …...... I A 40 E I Olive-green and red sandstone, siltstone and conglomerate; Lst Riverhead Torbay Pt. 40 Ba T i c k l e 00 20 Redmans Torbay Tor 40 Old Grates Cove Member: green siltstone and sandstone Sia Silica 26 Ba 5 30 minor gray shale containing wispy sandstone laminae Ba 20 Hd. Perlican 500 500 50 Ba 500 15 C Fe Fe locality ...... F Stn Building stone Little Harbour Hd.A B a y 00 Mr. FLAT ROCK COVE FORMATION 1 Upper Island HEART’S DESIRE FORMATION 35 Green’s Wabana 100 Outer Cove 50 Riverhead Cove 100 Ba 30 Harbour 25 Olive-green sandstone Piccos Brook Member: locally derived breccia and red muddy 500 500 65 Long0 N Little Harbour 20 Bellevue Hopeall E 50 Fe sandstone Problematical fossil marking ...... P Pb 35 IN Pd. East Hopeall Hd. 10 100 35 L Mn C Pyr Cove Logy Bay HEART’S CONTENT FORMATION 25 IA N Tilton 25 BELL Brennan Pt. Ba Y O Detailed mineral occurrence data are published separately on B R S Gray to black shale containing wispy sandstone laminae Knobby Hill Member: gray conglomerate and siltstone ay O Bay Mn T Spaniard’s ’s Sugarloaf Hd. 8 1 10 Hopeall Map 85-62 (O’Driscoll and King, 1985) PLA C 20 iard Windsor Pumbly 1 I an ISLAND Cuckold Formation 0 5 Bay 500 Cove 0 V Sp 70 Green Pt. C Heights Bellevue Beach Member: gray pebble conglomerate BLACKHEAD FORMATION 15 D 20 500 CE N 50 00 Red and gray sandstone, siltstone and shale Pinchgut Pt. 30 Sla Collier Pt. New H O 1 0 Great 10 P 0 e 20 NTIA 1 T k Baccalieu Pinchgut L Lance La MATURIN PONDS FORMATION U St. Phillips r Big Head Collier 15 32 r. 25 Roberts 70 A Freshwater 0 100 New 00 F Fe Cove inso Member Maddox Cove Member: red mudstone and sandstone exhibiting Ba S 5 W 50 Cu Red sandstone and mudstone exhibiting distinctive wavy Bay Y Shearstown 100 60° 58° 56° 54° 52° 500 40 Harbour L Bay S distinctive wavy bedding Ba L U 70 bedding; minor conglomerate L 60 E G 500 O O O O O Coley’s Point I Formation 60 58 56 54 52 K 73 Butlerville R 100 South e St. Thomas v B Mn Dildo ra Little CAPE BALLARD FORMATION 12P E T Burnt Pt. BIG HEAD FORMATION 2M 500 Lst L G U e Bell 50 St. NEWFOUNDLAND 30 10 500 A 0 D 50 Gray to red arkose and granule conglomerate Thickly bedded gray sandstone and quartz-granule conglomerate Anthony 0 150 20 F 10 I. ST. JOHN’S O O y ° 050 100 150 ° N a 51 51 51 51 Norman’s 25 25 B 45100 500 km Au m 00 70 km Sla Cove 1 Stn Gray shale and siltstone, minor purple shale r Wavy bedded, gray to green tuffaceous siltstone and arkose; J A Dildo 35 Sia Top N U E Kellys I. Clarke’s sail 40 100 y Ch locally includes Whiteway Member consisting of red sandstone NC 25 N a 15 I Au Paradise E 12I 2L Fair Haven Old s B am Mn ier 40 L igu ber 35 l K 60 Beach r N HEAD FORMATION nge Chapel l Arm B and siltstone CENTRAL MOBILE C 30 lai I n T Shop I Brigus Ba e I A O ns Ra IO p T L O e BELT (DUNNAGE- O Arm O Manuels Thin to medium bedded, gray sandstone; minor conglomerate ° ° 500 a N 50 50 50 50 R River South C ng vill N h Mn 100 Cooks o A B Au Long Pon GANDER ZONES) C N L en Dildo 20 River 65 Gray to green volcanogenic mixtite H Cove 0 Y Gr Fairhaven Pt. Lst Lst d Mn Formation S 50 South h Au High Rocks Member: red, wavy bedded sandstone and shale HUMBER t Cu Mr. or Foxtrap 12G 12H 2E 2F N 0 35 11 45 50 Makinsons Mount Petty Deer ZONE C 40 Colliers Pt. ophiolite LINE Lake 55

Dil C Kelligrews O I 40 40 Harbour I CUCKOLD FORMATION 45 Felsic flows and tuffs, and clastic sedimentary rocks High ° Gander ° O b Trinny N Mn 2 Pearl 49 49 49 49 N Fe

30 do Big 30 Cove W 500 Long Pd. Rocks Red, pebble to cobble conglomerate and sandstone Corner B 00 30 SY Grand 5 Gull O 40 0 500 70 0 Brook Is. D 20 Pond D T 5 ay Riverdale 500 Mr. Falls 100 Pd. Mafic flows; includes minor felsic flows and clastic sedimentary M U S G R A V E T O W G N R O U P S Cu B Paddys A Snows Marysvale R 12B 2C 202 Mn E 12A 2D ON A Pond QUIDI VIDI FORMATION Stephenville AVALON Upper Gullies Pph North Hd. rocks 30 E Pond 40 H P H Mn 500 ZONE 61 K Red and green sandstone; minor pebble conglomerate and F Blaketown S O O AU 35 iers ° ° C 48 48 0 55 Grates 48 48 80 ND 0 0 Mn Cu mudstone Seal Cove Fe Petty A St. LT O 1 Predominantly crystal and lithic tuffs, commonly reworked

Port aux 50 00 Coll Cove L 5 P Motion S I G N AH L I L G L R O U P Basques John's 500 Harbour 10 500 B J Grand 500 Pph Mr.

25 1N Colliers GIBBETT HILL FORMATION 11O 1M 500 60 Bay Mafic to felsic variegated flows, and pyroclastic and clastic 11P Brine Is. DO 35 Pd. 500 granite 40 0 y Mn 15 a sedimentary rocks ( at west edge of map was formerly Thickly bedded, light-gray sandstone; locally thinly bedded, 50 Conception B Mn O O N ° ° 30 DIL 40 47 47 47 47 1 s Cu greenish-gray to red sandstone, siltstone, tuff and conglomerate Harbour r E assigned to the ) e S t 60 e s N 40 20 0 I 25 0 al R 0 5 Cu a Gibbett Hill Formation L Motion Hd. 10 G 100 1 O O O 40 11I 1K Pph C Minor red sandstone and siltstone 1L 58 56 54 10 Long 500 Harbour I 10 Cove 65 E IDm T Harbour Main Bay ° ° ° N Bull Arm 58 56 54 d 500 00 5 Crawley I. 25 500 20 S A SWIFT CURRENT GRANITE(?) Iona CAPPAHAYDEN FORMATION Whitbourne Ocean T 500 Bay Bulls Formation I m IDg 15 Pink to gray, medium grained granite to granodiorite; minor lyroo D ur 40 R. Laminated gray siltstone o OW o Big Pond Cu N.T.S. INDEX MAP GEOLOGICAL INDEX MAP 0 50 0 Islands Harb H diorite and gabbro S 50 D Cu g SN 500 IDg n 0 D I m Lo 0 Pond N S D 5 U Round L O F Pond L Swift A 80 F P Pluton is presumed to be related to the Swift Current Granite in 20 25 U 70 S 30 500 B 10 Current 30 Long Harbour the Belleoram (1M) map area, which has yielded the following

100 E SOURCE MAPS FOR COMPILATION 33 500 Head 35 Holyrood Granite? radiometric dates (Dallmeyer et al., 1981): Placentia E Long Pt. Y N I F R Junction A L Ship Harbour T 50 00 00 U FAULT 101 5 0 5 C 0 d. N 0 5 Rb/Sr 548 ± 11 Ma (whole rock) L N 62 Fox I. 60 T IDg 40 U 40 39 0 ul l P 10 Y 65 G O NOTE: The Signal Hill and St. John’s groups of Williams and King (1979) 2C/2 20 50 30 18 e S Ar/ Ar 560 ± 15 Ma (hornblende) 2D/1 2C/4 2C/3 00 1 C Y 40 39 Cappahayden Fm. Middl 500 C A and the Musgravetown Group of McCartney (1967) have been revised to Pb 70 35 Ar/ Ar 566 ± 15 Ma (hornblende) Christie Jenness 100 500 B 25 00 U/Pb 580 ± 20 Ma (zircon) include parts of the Hodgewater Group of Hutchinson (1953) and McCartney 65 500 50 13 5 (1963) I 45 I (1950) 500 35 0 Country (1967). The name, Hodgewater Group, and the names of the group’s sub- 20 30 20 Renews Head Formation 500 55 divisions are not used on this map. Fox Harbour D 81 Pond Isaac Pt. 55 25 N Bay Bulls 50 500 Mo O Gull Latine Pt. Placentia 55 30 0 00 P T D 5 0 50 1M/16 1N/15 Sla L 100 1N/14 Sound 1N/13 r. 50 35 Bull Hd. Pd. H U 45 Ba a Pb 500 y Bulls i A t E Ranger et al. n E F E N McCartney 50 I (1984) N 500 Arge S I L

25 L D (1958) C I C 20 L E 500 D Witless South Hd. ST. JOHN’S GROUP E T Hsu 00 N 15 A 5 N IN N I Y Shalloway Pt. Pb N L Bay 40 L R O 20 (1978) 15 S 500 A C C 10 Dunnville E P I

N SYNCLIN T 45 Witless RENEWS HEAD FORMATION

100 G Y N M o S Z 50 b 1M/9 1N/10 A il 40 1N/11 T e 1N/12 Moll Pt. L Thin, lenticular bedded, dark-gray sandstone and minor shale 30 T 25 Big B Bay Pb I i Nixon PLACENTIA E 90 g L Gull I.

Hughes and 20 Pond Mobile First Pond F N D U I and 50 20 HADRYNIAN

Malpas (1971) 00 L G 30 Papezik 18 Pb 5 40 10 Pond FORMATION 60 O 500

(1979) Freshwater C Hutchinson Cu Mobile Gray to black shale containing thin lenses of buff-weathering McCartney M Witless Pt. Pb D (1953) King PON o Ba E 500 b Placentia I N i sandstone and siltstone; mainly light-gray, thinly bedded, 41 le (1957) (1985) S Pb R A Pyr o L 0 B ut A 40 0 50 a contorted shale and sandstone near base BAY Pointe Verde Cu Pb h 0 K 0 5 y e M 45 50 5 00 45 a Southea R s50t s 500 Paradise Ar A 1M/8 1N/7 35 m t 35 er Tinker Pt. 1N/5 1N/6 91 M Pond STAG Tors Cove r 35 Colinet FORMATION Riv 500 Tors Cove 15 Rive 20 Pd. Southeast 00 Medium to thinly bedded, graded, gray sandstone and shale; 0 5 Cu 500 McCartney 0 27 0 McCartney Rose 70 Placentia 5 r 10 A 500 00 55 ie minor tuffaceous rocks Pb 1 n (1956) L o Burnt Cove (1954) (1952) L lm I 0 a Pb 30 S 500 L V a 10 r , u 00 Cape SAIL Manche o 55 1 41 b P 10 45 r Pond Little a O SAWYERS 500 R Little Barasway 25 H 1N/2 Bar T . 1M/1 1N/4 HILL 500 22 15 St. Catherine’s 1N/3 achois Haricott Bauline East R.

00 S TJ . O H N ’ G S R O U P McCartney (1967) I 40 1 I CONNECTING t 60 WHALESBACK GABBRO (and equivalents) 35 500 10 ond e 10 Millins P n 40 10 30 i Fine to coarse grained gabbro (age of intrusion uncertain) l ay l 80 River o 0 me (1970) abin 50 2 B C C Car 10 m t 0 Mount Carmel r A Forest Field Moun Skin North 35L Little 25 Cape Neddick it 12 Pond POINT 20 Harbour ricott tle r a ys 30 u Harbour HOLYR H 70 CONCEPTION GROUP o

b Murph Pd. 20 r Mistaken Point 1L/16 1K/15 S New Bridge 40 a ittle 1K/13 1K/14 Great Barasway a L r 25 500 l r Pd. H u River m e i o Green, gray and black shale, siliceous siltstone and sandstone; Formation Harb Franks n o 40 Harricott Pt. Fletcher k o 00 500 GROUP 1 O n 25 o 5 o l m r Sa 0

0 i minor green conglomerate; numerous mafic dikes and sills

B South e 50 0 10 s O Upper part: red and green tuffaceous siltstone and sandstone 40 h l

(1972) KNOK HOUR River r el t 60 h tc D 35 r i 70 West HILL 8 30 M St. Joseph’s 500 Lower part: medium bedded, gray to pink sandstone and green o CLINE Pd. N 92 25 50 Briscal Fm. to purple and red shale; minor thin tuff horizons; fossiliferous 50 s

20 i 20 Riv r 500 near top Ship Cove 0 30 94 e ANTI Brigus Hd.

E acho 10 Riv

Great r e N r 50 1K/12 1K/11 22 I Gull Whalesback L Ba Cape Pd. 25 Broyle BRISCAL FORMATION 00 45 H 101 IC 23 ar Gabbro etc. 1 33 E 500 bou T Back 20 r Thickly bedded, coarse grained, gray sandstone, olive to gray 0 10 20 30 Gooseberry N 90 Williams and King (1979) I BEAVER N 25 30 30 L Gibbons 75 Cove A 100 Cape argillite, red arkosic sandstone; local units of thinly bedded gray FAULT 70 Clam C POND Mussel Pond Pt. Pond km Mn Dog N HILLS 40 O’Donnells Cove siltstone and shale 45 Y Gull Mr. S 15 500 28 Big Pd. Cape Broyle

Cu F Cal (not listed in stratigraphic order) 55 A 48 35 40 500 Calvert ver Cape Drook Formation Little Colinet U t Bay 80 Green siliceous siltstone and sandstone; silicified tuff E 6 20 Island L English

E 0 N T 50030 10 I C L Peter’s Patrick’s Cove 45 25 10 Member N C 00 I 5 CE 50 Clam Cove Member: gray, pebbly siltstone and shale 500 0 River A 25 T P L 0 50 N Ferryland Member 50 25 50 H A PLA 0

Ferryland Hd. C Peter’s River Member: gray, coarse grained sandstone 500 Torbay Map scales 1:250 000 and 1: 253 440 70 N Admirals 500

A Mr. 00 Beach 500 100 Biscay Mr. 5 60 75 R 500 P Biscay Member: altered green to purple basalt, locally pillowed

OI B Acquaforte Hr. OI 20 30 Map scales 1:50 000 and 1: 63 360 47 00 T 80 47 00 E N Great Colinet 15 I Y 45 0 e Cape English Member: gray to pale-red, thickly bedded A Breme Pt. O Island 20 10 g Mall a H South Point Mr. P 45 70 40 s y P sandstone s Bay Map scales 1:25 000 10 a LANSECAN Lansecan Pt. B 0 Chance Bay 0 20 35 500 Fermeuse 1 E 50 HILL t Pa N l Bay 70 75 75 I l Maggotty Pt. e 100 a 50 Torbay Member: red and green, medium to coarse grained, L Shoal 15 F Ba M 50 Riverhead erm C eu Clear Cove Other scales olin 70 se parallel-laminated sandstone, associated with mixtite Ba A 80 20 H C N Kingman’s r. Broad L 30 20 Y 20 TICLINE 60 65 S 0 10 60 Pb Cove Cuslett 50 75 Bear Cove Hd. Bauline Line Member: volcanogenic mixtite (possible northern AN 5 Mall Bay Mapping and substantial revision of existing maps by A. F. King Lst 25 ER River C O N C E P T I O G N R O U P E 0 J equivalent of Gaskiers Formation) i 60 35 IV Formation 50 g G . 25 g Frapeau Pt. r R Member l A 45 Bear Cove Pt. Aeromagnetic anomaly, caused by unit , interpreted from maps Cross Pt. Ba in 45 H 30 g S T C North Pt. 85 S N ’s Broad Cove River Member: thickly bedded chert and sandstone o I y 25 Lst v ar 30 NG 33 published by the Geological Survey of Canada (1971a,b) e A St. M 25 Old Renews O 65 St. Bride’s P SI Woman Bk P Pb R HOLYROOD INTRUSIVE SUITE 00 e 500 1 n Offshore geology from King et al. (1986), and G. B. J. Fader and Red Hd. 65 OS 00 e 40 GASKIERS FORMATION T 25 5 w S 100 s E H Lst 10 r. South Point Member: red agglomerate E’ S 40 CR HOLYROOD P. W. Durling (personal communication, 1986) ’ N 30 10 Medium grained, massive, pink to gray granite; minor aplite unconformity(?) D I St. Mary’s Y +2.2 L La Haye Pt. R Lst 15 15 Renews Hd. U/Pb 620 Ma (zircon) (Krogh et al., 1983) INTRUSIVE O 55 -1.7 Mineral occurrences compiled by C. F. O’Driscoll A 40 20 Gray mixtite (tillite); red mixtite overlain by red mudstone at top NCLINE C M 00 SUITE ST. BRI 1 15 45 Sia Beckford Hd. Point La Haye Bk. 00 SY 40 1 1 r Medium grained, pink, green and gray quartz monzonite, and Dd 0 Gaskiers 500 ’s 15 0 Branch d 500 ive l quartz diorite to gabbro Gray to red mixtite (correlation with Gaskiers Formation e Ba Gaskiers i R Dd 15 0 Bay Pond F 10 uncertain) REFERENCES 50 iver 20 R rook 60 B Ba 25 n 35 Anderson, M.M., Bruckner, W.D., King, A.F. and Maher, J.B. 50 FAULT Norther Hd. Branch Hd. de Burnt Pt. MALL BAY FORMATION 1975: The late Proterozoic ‘H.D. Lilly Unconformity’ at Red Head, northeastern Avalon Peninsula, Newfoundland. 45 La Northeast Ba 60 40 Cappahayden Green siliceous siltstone, argillite and tuff; thickly bedded American Journal of Science, Volume 275, pages 1012-1027. ST. 20 PETER’S Pond Dd Lst S T . M A R Y ’ S 25 quartzose sandstone 500 Re 50 Christie, A.M. Brierly Cove d Seal Cove Co iver Mount 1950: Geology of Bonavista map-area, Newfoundland (summary account). Geological Survey of Canada, Paper I ve R 70 y 80 I Gull Misery a 500 50-7, 40 pages. 50 Cove 75 B Chanc 30 50 35 Pond 25 HARBOUR MAIN GROUP (not listed in stratigraphic order) Ba 500 e Ba Lst GROUP Dallmeyer, R.D., Odom, A.L., O’Driscoll, C.F. and Hussey, E.M. False Cape 100 0 Cape St. Mary’s Golden 40 10 ook 45 50 Point Deer r 1981: Geochronology of the Swift Current granite and host volcanic rocks of the Love Cove Group, southwestern rood eer B Bay y D 0 Green to dark-gray, massive to flow-banded and brecciated, Avalon Zone, Newfoundland: evidence of a late Proterozoic volcanic-subvolcanic association. Canadian Journal of False 40 100 Lance 25 Pond 10 50 COVE Cape 20 0 rhyolitic intrusive and extrusive rocks Earth Sciences, Volume 18, pages 699-707. Redland Pt. Hol 60 40 Lance 500 t 10 35 Cove BAY eter’s ook Cov MAIN HARBOUR St. Vincent’s 45 P Br Bk. e Red sandstone, conglomerate, slate; green tuffaceous siltstone Fletcher, T.P. S Tocher’s rthwes t

00 Cape English No 35 N 1972: Geology and Lower to Middle Cambrian faunas of the southwest Avalon, Newfoundland. Unpublished 5 1 and sandstone; includes minor felsic and mafic volcanic rocks 30 Pond 0 500 0 15 Cape Ballard Ph.D. thesis, Cambridge University, 294 pages. rtheas 35 MA 23 Bull and E St. Stephen’s 60 S

H h E No Biscay Brook SIMPLIFIED MAP OF PRINCIPAL STRUCTURES Cow N 55 o Pink to gray felsic tuff and agglomerate; pink to red rhyolite and I 55 e Geological Survey of Canada IN 35 10 C L Holyrood 500 00 o L NC ck e v welded tuff; includes minor mafic volcanic and clastic 1 30 e C C AND STRATIGRAPHIC DIVISIONS a 1971a: Trepassey, Newfoundland, Sheet 1K. Geophysical Series (Aeromagnetic), Map 7325G. I Cov E 1971b: St. John’s, Newfoundland, Sheet 1N. Geophysical Series (Aeromagnetic), Map 7329G. Peter’s River T Shoal Point B sedimentary rocks N C 00 FR 5 h +2.2 SYN A Hd. Bay a Daniel’s Point 0 n U/Pb 622 Ma (zircon) (T. Krogh, 10 50 c -2.0 Hodych, J.P. and Hayatsu, A. 50 e 500 500 25 C personal communication, 1986) 1980: K-Ar isochron age and paleomagnetism of diabase along the trans - Avalon aeromagnetic lineament- o 80 45 tugal F v evidence of Late Triassic rifting in Newfoundland. Canadian Journal of Earth Sciences, Volume 17, pages 491-499. E R 100 Biscay r e 50 . e C 30 U r 15 Por 100 n Green to purple basaltic flows and pyroclastic rocks; includes Bay y c N O Trepassey 00 h INE ver H 5 m i B a minor felsic volcanic rocks, clastic sedimentary rocks and Hsu, E. R 25 30 n LA R 10 Ba ’s 1978: - St. John’s, Newfoundland. Newfoundland Department of Mines and Energy, Mineral A 60 C gabbro ay lam C 50 H c o ANTICL M ly 10 45 35 500 v 30 Development Division, Map 7836. l r Cove e U 100 EA I ey Bis Gu Rive Mutton Portugal LS R ass E O Y e Hughes, C.J. and Brückner, W.D. INT River 100 v Cove N Gull Island Pt. E rep Portugal o COME BY CHANCE T UM I 40 I O T Bay 1971: Late Precambrian rocks of eastern Avalon Peninsula, Newfoundland - a volcanic island complex. Canadian S 100 C South 30 L 25 Pt. FAULT P . S l 25 FAUL IC Journal of Earth Sciences, Volume 8, pages 899-915. a NEW CH R A g OR T 25 u E P Cape t N N N hree E or 25 LI 1 T BEACH A 0 Powles Mutton P Broad Cove Hughes, C.J. and Malpas, J.G. C es otts R 0 r 35 CLI 25 T Hd. Sho Sh N E 1971: Metasomatism in the late Precambrian Bull Arm Formation in southeastern Newfoundland: recognition and - Y E SYN s NG A O Y 00 IN I SYNCLINE 15 I L B implications. Proceedings of the Geological Association of Canada, Volume 24, pages 85-93. 1 Drook S CLIN St. am’ Cape Cove I FAULT 40 S E 40 T CL N 20 I AN SLAND Cape Race N I P SYN Hutchinson, R.D. 75 BAY St. Shores Cove BAY O St. I 1953: Geology of Harbour Grace map-area, Newfoundland. Geological Survey of Canada, Memoir 275, 43 pages. 20 1 Y OE COVE LL 0 T 0 30 40 H 10 Long 70 T EAD E P S 1962: Cambrian and trilobite faunas of southeastern Newfoundland. Geological Survey of Canada, GU CAY DIAGRAM OF MAJOR STRATIGRAPHIC RELATIONSHIPS P Beach E Bulletin 88, 156 pages. 40 A E A CKH C

C BIS Cripple Rock A N (not drawn to scale) LIN Lo TRINI 60 Freshwater n Pt. BL Western Hd. g C O St. Shotts VICTORI Jenness, S.E. Pt. ove St. Shotts TREPASSEY Wate C 1963: Terra Nova and Bonavista Bay map areas, Newfoundland (2DE’/ and 2C). Geological Survey of Canada, Cove r ANTIC n C Memoir 327, 184 pages. ove HADRYNIAN-LOWER PALEOZOIC RELATIONSHIPS Eastern Hd. Mistaken E 30 A R r BAY Pt. E : King, A.F. (Compiler) N n Cape Posttectonic Iona Islands Northwest Trinity Bay to Point Lance: EE ULT LI Cape o IN ld Pine T L A Random Formation is absent. Cambrian Adeyton LILLY UNCONFORMITY 1982: Guidebook for Avalon and Maguma Zones of . The Caledonide Orogen, International C F Intrusive Suite Freels C Cambrian Random Formation ( ) disconformably Geological Correlation Project 27. Memorial University of Newfoundland, Department of Earth Sciences, Report 9, o WA NC Group ( ) unconformably overlies Holyrood At Flat Rock, Flat Rock Cove Formation (Signal Hill Group) SYN ve overlies Hadrynian Musgravetown Group and is 308 pages. Intrusive Suite, Conception Group and Harbour lies unconformably on previously deformed Drook S itself disconformably overlain by Adeyton Group ( ) Posttectonic Clarenville Main Group. Formation (Conception Group) (Anderson et al., 1975). GOVERNMENT OF FRESH E SY (Hutchinson, 1962; Fletcher, 1972). King, A.F. Granite Granitic detritus shed into Signal Hill Group indicates 1985: Geology of St. John’s (1N/10a,b), Cochrane Pond (1N/7f, north half), Torbay (1N/10g, south half), Petty SHOTT NEWFOUNDLAND E . N unroofing of a pluton to northeast (King, 1979). Harbour (1N/7g, north half), Windsor Lake (1N/10c), Bauline Line (1N/10f, south half) and Topsail (1N/10d, east T I S E RAC L IL C

half) areas. Newfoundland Department of Mines and Energy, Mineral Development Division, Maps 8567-8573. I

AND LABRADOR AP T Powder Horn Diorite Pretectonic Spread Eagle Gabbro Pretectonic C N E T

A N I TOPSA Whalesback Gabbro Complex intrudes Harcourt Group King, L.H., Fader, G.B.J., Jenklns, W.A.M. and King, E.L. L AUL C I F S T 1986: Occurrence and regional geological setting of Paleozoic rocks on the Grand Banks of Newfoundland. ’ Musgravetown Group Adeyton Group upper Musgravetown Group N Y Department of A Canadian Journal of Earth Sciences, Volume 23, pages 504-526. R west of map area. A

M Wabana Group upper Signal Hill Mines and Energy . (O’driscoll, 1977). p G Krogh, T.E., Strong, D.F. and Papezik, V.S. T H Bull u S C n Bell Island Group i Group o N o b i r 1983: Precise U-Pb ages of zircons from volcanic and plutonic units in the Avalon Peninsula. Abstracts with A VER p b A t E R RI a G u Harcourt Group e Programs, 1983, 18th Annual Meeting, Northeastern Section, Geological Society of America, Volume 15, page 135. Geological Survey r RELATIONSHIP P B m B l o t A m l t n E i r C Swift Current Granite(?) g r i N F Harbour o BETWEEN I o H G Adeyton Group H i L ormatio n S t F i McCartney, W.D. C intrudes Bull Arm Formation. l s t a ’ Main . l l CONCEPTION AND OI OI S N a p m E n r 1954: Holyrood, Newfoundland. Geological Survey of Canada, Paper 54-3 (map only). R Y n F o 46 30 N It is thought to be part of main u Group J 46 30 S E I C h g p HARBOUR MAIN GROUPS T T H L o 1956: Argentia, Newfoundland. Geological Survey of Canada, Paper 55-11 (map only). i o E o e o u P C ad r h Swift Current Granite I S n J o OI I OI n Contact between Conception 1957: Dildo, Newfoundland. Geological Survey of Canada, Map 13-1956. OI I I T G r I I I OI Y n . ’s I I N G FAUL t 54 15 10 52 30 A intrusion that outcrops west of 54 00 50 40 A e n 1958: Geology of Sunnyside map-area, Newfoundland, 1N/13. 50 40 30 20 10 53 00 B S and Harbour main groups has c o p C t i Geological Survey of Canada, Paper 584, 21 pages. map area. The latter intrusion Holyrood u i t o R n been described as an angular p n o 1967: Whitbourne map-area, Newfoundland. Geological Survey of Canada, Memoir 341, 134 pages. Y E g r T appears to be related to Bull e Intrusive c A G A c e unconformity (McCartney, C P p t i o n S W n 0 10 20 30 I H Arm Formation volcanism o o Suite B 1967), a lateral facies change Mullins, W.J. S MANS COVE i E n C R (Dallmeyer et al., 1981). t 1970: Geology of St. Catherine’s (east half) map-arsa (1N/3, E’/). Newfoundland Department of Mines, Agriculture F (Hughes and Brü ckner, 1971) km G r o and Resources, Geological Report Number 15, 13 pages. u p and a disconformity (Williams TRINITY BAY SYNCLINORIUM CONCEPTION BAY ANTICLINORIUM BAY BULLS SYNCLINE FRESH Harbour and King, 1979). Nixon, G.T., and Papezik, V .S. Main Harbour 1979: Late Precambrian ash-flow tuffs and associated rocks of the Harbour Main Group near Colliers, eastern A B C D Group Main Newfoundland: chemistry and magmatic affinities. Canadian Journal of Earth Sciences, Volume 16, pages 167-181. Group? O’Driscoll, C.F. 1977: Geology of the Sound Island map area (east half). In Report of Activities for 1976. Newfoundland

Department of Mines and Energy, Mineral Development Division, Report 77-1, pages 43-47. WHITBOURNE SNOWS POND PALEOZOIC Little n SPREAD EAGLE SPREAD

THRUST Nature and age of basement Harbour n SYNCLINE SYNCLINE HOLYROOD FAULT HOLYROOD

DUFFS FAULT S PETERS RIVER FAULT QV PEAK POND PEAK FAULT H TOPSAIL FAULT TOPSAIL POND FAULT GULL rocks unknown. No rocks O’Driscoll, C.F. and King, A.F. East Ocean Pond HHs BUTTER POT Musgravetown Group (excluding Signal Hill and St. Mafic sills (Si) intrude Late Cambrian Elliot Cove Diabase dykes (Dd) intrude Musgravetown Group Triassic dykes ( ) intrude Whalesback gabbro and

1985: Mineral Occurrence Map, Avalon Peninsula, Newfoundland. Newfoundland Department of Mines and Energy, coast Formation (Harcourt Group) and were folded during and Late Cambrian Elliot Cove Formation (latter Drook and Fermuse formations in three separate older than Harbour main and sea level MHHC HHa sea level Bull Arm Formation) John’s Groups Mineral Development Division. Map 85-62. HHa HHa regional deformation of presumed Silurian- relationship not shown on map) and postdate exposures. Aeromagnetic anomaly implies near Connecting Point groups are King, A.F. (compiler) CPH km 1 Devonian age. regional deformation of presumed Silurian- continuity between exposures. Age based on exposed on Avalon Ranger, M.J., Pickerill, R.K. and Fillion, D. 5000 ft. Bull Arm Formation 1984: Lithostratigraphy of the Cambrian? - Lower Ordovician Bell Island and Wabana groups of Bell, Little Bell, and 1988: Geology of the Avalon Peninsula, 2 Devonian age. radiometric dating (Hodych and Hayatsu, 1980. Peninsula. Kellys islands, Conception Bay, eastern Newfoundland. Canadian Journal of Earth Sciences, Volume 21, pages Newfoundland (parts of 1K, 1L, 1M, 1N and 2C). 3 10000 Conception and Connecting Point Bull Arm Formation and Signal Hill Group are 1245-1261. Map 88-001 (coloured). Scale: 1:250 000. 4 Groups thought to be lateral equivalents because they Connecting Point Group is thought to be western equivalent of 15000 Rose, E.R. underlie Big Head Formation on opposite limbs of conception and St. John’s groups, due to facies similarity and Government of Newfoundland and Labrador, 5 Harbour main Group 1952: Torbay map-area, Newfoundland. Geological Survey of Canada, Memoir 265, 64 pages. Trinity Bay synclinorium. Abundant tuff in Gibbett Hill inferred stratigraphic relationship between Bull Arm Formation Department of Mines and Energy, Mineral 6 CPH 20000

LATE PRECAMBRIAN LATE and Signal Hill Group. Transition is hidden beneath Trinity Bay Granitic intrusions Mafic intrusions formation may be derived from bull Arm Formation Williams, H, and King, A.F. synclinorium. 1979: Trepassey map area, Newfoundland. Geological Survey of Canada, Memoir 389, 24 pages. Development Division. GS# NFLD/1680 volcanism.