Preview Map - Department of Natural Resources

GEOLOGY OF THE AVALON
PENINSULA, NEWFOUNDLAND
LEGEND
SY
NC
LIN
E
DE
BA
Y
A
Lower Cambrian
B
SYNC
LINE
50
0
BAY
3
4
MH HC
HH a
HH a
HH a
GULL POND FAULT
BUTTER POT
TOPSAIL FAULT
DUFFS FAULT
HH s
HOLYROOD FAULT
SNOWS POND
SYNCLINE
Ocean Pond
PETERS RIVER FAULT
WHITBOURNE
SYNCLINE
C
H I L L
S T.
nt
Gro
p
ou
Gr
n
io
Holyrood
Intrusive
Suite
o
nc
n
Form
’s Gr
ou
r
eption G
o
up
Harbour
Main
Group
D
io
p
ou
Gr
’s
pt
oi
on
P
ce
g
hn
C
in
l
p
p
n
ou
io
Gr
Hi
hn
al
ad
. J
o
He
n
St
ct
ll
rm
at
io
Harbour
Main
Group
at
BLACK
COVE FA
ULT
FRESHMAN
S
AN
TIC
LINE
CLI
NE
SYN
BA
Y
FR
ES
HW
AT
ER
BIS
CA
Y
30
sea level
Musgravetown Group (excluding
Bull Arm Formation)
5000 ft.
Bull Arm Formation
10000
Conception and Connecting Point
Groups
15000
Signal Hill and St.
John’s Groups
Harbour main Group
20000
Granitic intrusions
Mafic intrusions
Mafic sills (Si) intrude Late Cambrian Elliot Cove
Formation (Harcourt Group) and were folded during
regional deformation of presumed SilurianDevonian age.
Bull Arm Formation and Signal Hill Group are
thought to be lateral equivalents because they
underlie Big Head Formation on opposite limbs of
Trinity Bay synclinorium. Abundant tuff in Gibbett Hill
formation may be derived from bull Arm Formation
volcanism.
Arenig
Arenig(?)
RELATIONSHIP
BETWEEN
CONCEPTION AND
HARBOUR MAIN GROUPS
Contact between Conception
and Harbour main groups has
been described as an angular
unconformity (McCartney,
1967), a lateral facies change
(Hughes and Brückner, 1971)
and a disconformity (Williams
and King, 1979).
Harbour
Main
Group?
PALEOZOIC
SH QV
5
CPH
GROUP
YNCLIN
E
HEAD
S
FA
UL
T
RIV
S
20
LATE PRECAMBRIAN
CPH
2
CONCEPTION
HARBOUR MAIN
GROUP
IU
M
OR
LIN
CO
VE
ER
NCH
B RA
TE
R
10
BAY BULLS SYNCLINE
coast
sea level
n
n
Little
Harbour
East
PEAK POND FAULT
B
CONCEPTION BAY ANTICLINORIUM
SPREAD EAGLE
THRUST
A
6
SH
OE
FAULT
AN
T
RY’
S
MA
ST.
PE
CA
I
at
Harcourt Group
Adeyton Group
C
TRINITY BAY SYNCLINORIUM
km 1
TOPSA
IL
LIN
FA
UL
T
E
ANTICLINE
CA
PE
O
52 30
rm
ig
il
I
B
Fo
H
40
50
rm
t
I
I
A
upper Signal Hill
Group
et
53 00
Wabana Group
Bell Island Group
Jo
10
O
I
PE
ul
l
.
20
I
B
upper Musgravetown Group
St
30
I
Harcourt Group
Adeyton Group
e
40
I
Swift Current Granite(?)
intrudes Bull Arm Formation.
It is thought to be part of main
Swift Current Granite
intrusion that outcrops west of
map area. The latter intrusion
appears to be related to Bull
Arm Formation volcanism
(Dallmeyer et al., 1981).
Pretectonic
Whalesback Gabbro
Pretectonic Spread Eagle Gabbro
Powder Horn Diorite
Complex intrudes
Musgravetown Group
west of map area.
(O’driscoll, 1977).
LILLY UNCONFORMITY
At Flat Rock, Flat Rock Cove Formation (Signal Hill Group)
lies unconformably on previously deformed Drook
Formation (Conception Group) (Anderson et al., 1975).
Granitic detritus shed into Signal Hill Group indicates
unroofing of a pluton to northeast (King, 1979).
bb
I
HADRYNIAN-LOWER PALEOZOIC RELATIONSHIPS
Conception Bay:
Random Formation is absent. Cambrian Adeyton
Group ( ) unconformably overlies Holyrood
Intrusive Suite, Conception Group and Harbour
Main Group.
Northwest Trinity Bay to Point Lance:
Cambrian Random Formation ( ) disconformably
overlies Hadrynian Musgravetown Group and is
itself disconformably overlain by Adeyton Group ( )
(Hutchinson, 1962; Fletcher, 1972).
n
50
I
km
King, A.F. (compiler)
1988: Geology of the Avalon Peninsula,
Newfoundland (parts of 1K, 1L, 1M, 1N and 2C).
Map 88-001 (coloured). Scale: 1:250 000.
Government of Newfoundland and Labrador,
Department of Mines and Energy, Mineral
Development Division. GS# NFLD/1680
BA
Y
CONCE
PTIO
RI
A
SY
NC
RA
CE
Posttectonic Clarenville
Granite
0
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.
Posttectonic Iona Islands
Intrusive Suite
n
I
Mullins, W.J.
1970: Geology of St. Catherine’s (east half) map-arsa (1N/3, E’/). Newfoundland Department of Mines, Agriculture
and Resources, Geological Report Number 15, 13 pages.
Nixon, G.T., and Papezik, V .S.
1979: Late Precambrian ash-flow tuffs and associated rocks of the Harbour Main Group near Colliers, eastern
Newfoundland: chemistry and magmatic affinities. Canadian Journal of Earth Sciences, Volume 16, pages 167-181.
AN
TIC
NE
W
I TY
CT
O
Co
ve
DIAGRAM OF MAJOR STRATIGRAPHIC RELATIONSHIPS
(not drawn to scale)
Co
ve
LI
NE
Mistaken
Pt.
70
Cripple Rock
Pt.
VI
IC
LI
NE
Wa
ter
n
SH
W
AT
EE
R
AN
T
Lo
ng
Freshwater
Pt.
FR
E
TT
S
O
SH
Long
Beach
TRI
N
40
N
I
BAY
40
CH
EL
SE
AA
BE
AC
SYN
CLI
N
H
FA
U
LT
COME BY CHANCE
FAULT
Green to purple basaltic flows and pyroclastic rocks; includes
minor felsic volcanic rocks, clastic sedimentary rocks and
gabbro
o
O
54 00
JOHN’S
GU
LL
Co
ve
AN
TI
CL
IN
E
ve
OR
IUM
s
Co
Cape Cove
30
Pink to gray felsic tuff and agglomerate; pink to red rhyolite and
welded tuff; includes minor mafic volcanic and clastic
sedimentary rocks
+2.2
U/Pb 622 -2.0 Ma (zircon) (T. Krogh,
personal communication, 1986)
C
I
10
Green to dark-gray, massive to flow-banded and brecciated,
rhyolitic intrusive and extrusive rocks
ve
NT
ICL
INE
10
0
50
0
BA
Y
BIS
ov
e
HARBOUR MAIN GROUP (not listed in stratigraphic order)
Chance Cove Hd.
Cape Race
B A Y
MALL BAY FORMATION
Green siliceous siltstone, argillite and tuff; thickly bedded
quartzose sandstone
SIMPLIFIED MAP OF PRINCIPAL STRUCTURES
AND STRATIGRAPHIC DIVISIONS
ove
40
30
25
Drook
10
Gray to red mixtite (correlation with Gaskiers Formation
uncertain)
up
FRENCHMAN
S
50
0
l
Po
rtu
ga
eC
O
54 15
Gray mixtite (tillite); red mixtite overlain by red mudstone at top
Red sandstone, conglomerate, slate; green tuffaceous siltstone
and sandstone; includes minor felsic and mafic volcanic rocks
Broad Cove
35
CA
Y
E
CA
P
Cl
am
25
15
Bauline Line Member: volcanogenic mixtite (possible northern
equivalent of Gaskiers Formation)
GASKIERS FORMATION
South Point Member: red agglomerate
I
46 30
I
G R O U P
GROUP
FAULT
PO
ND
TOPS
AIL
100
500
Bk
.
Br
oo
k
Bac
k
l C
ove
or
tu
ga
INE
SY
NC
L
P
T R E P A S S E Y
Cape
Pine
30
500
Portugal
Pt.
Torbay Member: red and green, medium to coarse grained,
parallel-laminated sandstone, associated with mixtite
HOLYROOD
INTRUSIVE
SUITE
COVE
Ba
y
100
Biscay
Bisc
ay
10
0
0
10
Cape
Mutton
Powles
Hd.
Bay
100
Hr.
sey
Tre
pas
Bay
50
Cape Ballard
23
30
HADRYNIAN
I NE
10
0
SYNCL
BLACKHEAD
500
BUL
LS
POND
COUNT
RY
FAULT
500
0
50
500
FAUL
T
Medium grained, pink, green and gray quartz monzonite, and
quartz diorite to gabbro
I
O
M U S G R AV E TO W N
100
50
0
500
500
Holy
rood
50
0
River
45
unconformity(?)
500
Broo
k
Nor
the
100
ast
10
ve
Co
Portugal
Cove
South
Cape English Member: gray to pale-red, thickly bedded
sandstone
Gi
O
S I G N A L
RO
CK
FL
AT
Bk.
oe
Sh
500
500
LINE
ANTIC
Gas
ter
10 0 s B
ay
50
0
50
0
Broo
k
Medium grained, massive, pink to gray granite; minor aplite
U/Pb 620 +2.2
-1.7 Ma (zircon) (Krogh et al., 1983)
Geological Survey
46 30
G R O U P
TH
RU
ST
50
0
N
O
P
E
C
N
O
C
Bay
llie
rs
Co
50
0
500
r
ve
Ri
ur
LT
FA
U
Fi
elds’
0
50
La
d
en
15
Tremadoc(?)
Upper
Cambrian
Y
500
LT
FA
U
S
GU
BRI
10
0
50
0
50
0
50
0
50
0
10
0
ANTIC
LINE
R
VE
Mutton
Biscay Member: altered green to purple basalt, locally pillowed
40
Hr.
35
50
35
Peter’s River Member: gray, coarse grained sandstone
Broad Cove River Member: thickly bedded chert and sandstone
Department of
Mines and Energy
Krogh, T.E., Strong, D.F. and Papezik, V.S.
1983: Precise U-Pb ages of zircons from volcanic and plutonic units in the Avalon Peninsula. Abstracts with
Programs, 1983, 18th Annual Meeting, Northeastern Section, Geological Society of America, Volume 15, page 135.
BELL ISLAND GROUP
e
0
CL
INE
SY
N
ND
PO
NS
MA
E
TI
CL
IN
0
50
LIN
E
SY
NC
PO
ND
E
PLA
C
RI
AN
T IC
OU
R
RB
HA
45
ST
.
NEWFOUNDLAND
AND LABRADOR
Biscay
Bay
Clam Cove Member: gray, pebbly siltstone and shale
HOLYROOD INTRUSIVE SUITE
30
ce
0
60
10
0
St
.
E
C
LI
N
N
Cape
Freels
Mall Bay
Formation
35
Burnt Pt.
500
50
Trepassey
PI
NE
m’
s
15
C
SY
30
ld
GOVERNMENT OF
VE
RD
E
e
LIN
E
AN
A
SE
EL
W
NE
ov
e Pd
.
AN
K
OW
S
100
0
R.
Sa
60
St. Shotts
Arno
King, A.F. (Compiler)
1982: Guidebook for Avalon and Maguma Zones of Atlantic Canada. The Caledonide Orogen, International
Geological Correlation Project 27. Memorial University of Newfoundland, Department of Earth Sciences, Report 9,
308 pages.
40
500
50
Rive
r
TR
Ri
EP
ve
r
AS
SE
Y
lly
Gu
ree
Th
Shoal Point
45
Eastern Hd.
King, L.H., Fader, G.B.J., Jenklns, W.A.M. and King, E.L.
1986: Occurrence and regional geological setting of Paleozoic rocks on the Grand Banks of Newfoundland.
Canadian Journal of Earth Sciences, Volume 23, pages 504-526.
35
100
SYNCLIN
E
LANCE
POINT
St. Shotts
Cove
King, A.F.
1985: Geology of St. John’s (1N/10a,b), Cochrane Pond (1N/7f, north half), Torbay (1N/10g, south half), Petty
Harbour (1N/7g, north half), Windsor Lake (1N/10c), Bauline Line (1N/10f, south half) and Topsail (1N/10d, east
half) areas. Newfoundland Department of Mines and Energy, Mineral Development Division, Maps 8567-8573.
35
Ch
an
25
45
10
20
40
Western Hd.
80
DROOK FORMATION (not listed in stratigraphic order)
Green siliceous siltstone and sandstone; silicified tuff
Co
75
Bear Cove Hd.
Cappahayden
40
BRISCAL FORMATION
Thickly bedded, coarse grained, gray sandstone, olive to gray
argillite, red arkosic sandstone; local units of thinly bedded gray
siltstone and shale
ce
an
St. Shores Cove
75
Broad
Cove
River
Member
Renews Hd.
’
an
hm
20
Jenness, S.E.
1963: Terra Nova and Bonavista Bay map areas, Newfoundland (2DE’/ and 2C). Geological Survey of Canada,
Memoir 327, 184 pages.
500
10
Gaskiers Formation
nc
LL
GU
es
or
Sh
.
St
15
0
10
Hutchinson, R.D.
1953: Geology of Harbour Grace map-area, Newfoundland. Geological Survey of Canada, Memoir 275, 43 pages.
1962: Cambrian stratigraphy and trilobite faunas of southeastern Newfoundland. Geological Survey of Canada,
Bulletin 88, 156 pages.
ND
LA
IS
25
Re
ne
ws
55
20
Ch
I
SY
Bk
10
Fre
10
10
Woman
k
oo
Br
25
South Point Mr.
Bear Cove Pt.
30
15
25
80
30
25
25
I
Renews
500
Daniel’s Point
10
r
ve
Ri
100
40
55
50
NE
LI
C
N
Hughes, C.J. and Malpas, J.G.
1971: Metasomatism in the late Precambrian Bull Arm Formation in southeastern Newfoundland: recognition and
implications. Proceedings of the Geological Association of Canada, Volume 24, pages 85-93.
35
Peter’s River
Gull Island Pt.
O
47 00
Biscay Mr.
Seal Cove
500
500
Bay
75
Clear Cove
30
Old
70
60
60
55
Torbay
Mr.
o
Sh
St. Stephen’s
45
Northeast
Pond
60
Tocher’s
Pond
30
Hughes, C.J. and Brückner, W.D.
1971: Late Precambrian rocks of eastern Avalon Peninsula, Newfoundland - a volcanic island complex. Canadian
Journal of Earth Sciences, Volume 8, pages 899-915.
’s
ter
Pe
Pb
0
50
33
20
0
10
45
50
Hsu, E.
1978: Pouch Cove - St. John’s, Newfoundland. Newfoundland Department of Mines and Energy, Mineral
Development Division, Map 7836.
60
50
Mount
Misery
Pond
Pond
20
15
50
30
Holyrood
20
40
Deer
St. Vincent’s
Cape English
.
Bk
50
0
Deer
20
P
MISTAKEN POINT FORMATION
Upper part: red and green tuffaceous siltstone and sandstone
Lower part: medium bedded, gray to pink sandstone and green
to purple and red shale; minor thin tuff horizons; fossiliferous
near top
ve
Co
B A Y
Lance
Cove
Hodych, J.P. and Hayatsu, A.
1980: K-Ar isochron age and paleomagnetism of diabase along the trans - Avalon aeromagnetic lineamentevidence of Late Triassic rifting in Newfoundland. Canadian Journal of Earth Sciences, Volume 17, pages 491-499.
m
500
25
Bull and
Cow
er
Riv
500
10
60
Chance Bay
Fermeuse
Ferm
euse
Hr.
Kingman’s
10
No
rth
we
st
Point
10 Lance
0
500
75
25
75
35
False Cape
100
Acquaforte Hr.
Cape
English
Member
Peter’s
River
Member
Ferryland Hd.
Aquaforte
50
15
15
20
25
40
Drook Formation
Ferryland
70
80
25
25
65
r
ve
Ri
Point Lance
Geological Survey of Canada
1971a: Trepassey, Newfoundland, Sheet 1K. Geophysical Series (Aeromagnetic), Map 7325G.
1971b: St. John’s, Newfoundland, Sheet 1N. Geophysical Series (Aeromagnetic), Map 7329G.
500
nd
Po
Cov
e
Lst
P
50
25
0
50
Fletcher, T.P.
1972: Geology and Lower to Middle Cambrian trilobite faunas of the southwest Avalon, Newfoundland. Unpublished
Ph.D. thesis, Cambridge University, 294 pages.
30
Sho
tts
40
Redland Pt.
Ar
r
’s
Mary
Pb
1
Golden
Bay
False
Cape
85
North Pt.
45
lyr 00
oo
d
Ba
Cape St. Mary’s
30
500
50
0
WHALESBACK GABBRO (and equivalents)
Fine to coarse grained gabbro (age of intrusion uncertain)
Cape Broyle
80
0
50
Dallmeyer, R.D., Odom, A.L., O’Driscoll, C.F. and Hussey, E.M.
1981: Geochronology of the Swift Current granite and host volcanic rocks of the Love Cove Group, southwestern
Avalon Zone, Newfoundland: evidence of a late Proterozoic volcanic-subvolcanic association. Canadian Journal of
Earth Sciences, Volume 18, pages 699-707.
.
Hr
E
Gull
Cove
Ba
SH
EA
R
ST
O
W
SN
E
y
Ba
ot
100
35
Gaskiers
Ho
50
I
Cal
vert
Bay
Calvert
500
5
40
M A R Y ’ S
Clam
Cove
Mr.
P
20
25
S T .
Whalesback
Gabbro etc.
75
70
TREPASSEY FORMATION
Medium to thinly bedded, graded, gray sandstone and shale;
minor tuffaceous rocks
CONCEPTION GROUP
Briscal Fm.
Cape Broy
le Ha
rbour
30
30
25
30
L IN
Re
d
Brierly Cove
Brigus Hd.
FERMEUSE FORMATION
Gray to black shale containing thin lenses of buff-weathering
sandstone and siltstone; mainly light-gray, thinly bedded,
contorted shale and sandstone near base
Mistaken Point
Formation
GROUP
Green, gray and black shale, siliceous siltstone and sandstone;
minor green conglomerate; numerous mafic dikes and sills
Cape Broyle
RENEWS HEAD FORMATION
Thin, lenticular bedded, dark-gray sandstone and minor shale
Trepassey Formation
CONNECTING POINT GROUP
Brigus South
ST. JOHN’S GROUP
POINT
Cape Neddick
500
Gibbons
Pond
80
St. Mary’s
Bay
CONNECTING
I
500
500
15
PE
T
Lst
Dd
Christie, A.M.
1950: Geology of Bonavista map-area, Newfoundland (summary account). Geological Survey of Canada, Paper
50-7, 40 pages.
50
0
AN
TI
DILD
O
AN
TIC
LIN
E
r
HAY
E
ay
Ba
y
oa
l
LA Mall B
70
60
Point La Haye
Gaskiers
10
20
40
20
Riverhead
Branch Hd.
ST
.
Ba
South
West
Pd.
75
65
Beckford Hd.
Bauline East
40
50
La Haye Pt.
Fermeuse Formation
70
35
40
Gull I.
45
Ba
Norther Hd.
500
0
50
70
St.
Renews Head Formation
he 10
500
70
500
0
10
Dd
Anderson, M.M., Bruckner, W.D., King, A.F. and Maher, J.B.
1975: The late Proterozoic ‘H.D. Lilly Unconformity’ at Red Head, northeastern Avalon Peninsula, Newfoundland.
American Journal of Science, Volume 275, pages 1012-1027.
Williams, H, and King, A.F.
1979: Trepassey map area, Newfoundland. Geological Survey of Canada, Memoir 389, 24 pages.
MAR
KLA
ND
0
Lst
Dd
REFERENCES
Red Hd.
Sia
Branch
Ba
s
Frank
25
6
60
Frapeau Pt.
45
I
NOTE: The Signal Hill and St. John’s groups of Williams and King (1979)
and the Musgravetown Group of McCartney (1967) have been revised to
include parts of the Hodgewater Group of Hutchinson (1953) and McCartney
(1967). The name, Hodgewater Group, and the names of the group’s subdivisions are not used on this map.
Cappahayden Fm.
Manc
25
Gull
Pd.
ER
’S
MA
RY
’S
Lst1
65
Rb/Sr 548 ± 11 Ma (whole rock)
39
Ar/ Ar 560 ± 15 Ma (hornblende)
40
39
Ar/ Ar 566 ± 15 Ma (hornblende)
U/Pb 580 ± 20 Ma (zircon)
50
10
0
500
Co
ve
Mall
Bay
T
lin
g
St. Bride’s
00
ST
SY . BR
NC ID
LI E’S
NE
Mineral occurrences compiled by C. F. O’Driscoll
0
50
g
Lst
10
25
Ba
Cross Pt.
Offshore geology from King et al. (1986), and G. B. J. Fader and
P. W. Durling (personal communication, 1986)
60
Jig
Aeromagnetic anomaly, caused by unit , interpreted from maps
published by the Geological Survey of Canada (1971a,b)
Cuslett
10
POI
N
Lst
50
Maggotty Pt.
20
45
COL
INET
Mapping and substantial revision of existing maps by A. F. King
20
0
PAS
SAG
E
Ba
Lansecan Pt.
10
Sh
E
LANSECAN 0
10
HILL
15
NC
LINE
Wild Cove
Great Colinet
Island
Swift
Current
Granite?
Burnt Cove
25
0
50
CAPPAHAYDEN FORMATION
Laminated gray siltstone
Tors Cove
d
Pon
30
ICL
IN
Ba
River
Pd.
70
90
Admirals
Beach
AN
T
Other scales
Rose, E.R.
1952: Torbay map-area, Newfoundland. Geological Survey of Canada, Memoir 265, 64 pages.
100
0
10
unt
Mo
Harbour
23
O’Donnells
Little Colinet
Island
Coli
net
Pass
age
SY
20
Breme Pt.
Ranger, M.J., Pickerill, R.K. and Fillion, D.
1984: Lithostratigraphy of the Cambrian? - Lower Ordovician Bell Island and Wabana groups of Bell, Little Bell, and
Kellys islands, Conception Bay, eastern Newfoundland. Canadian Journal of Earth Sciences, Volume 21, pages
1245-1261.
40
r
ve
Ri
15
48
BRANC
I
POINT
O
47 00
Map scales 1:25 000
O’Driscoll, C.F. and King, A.F.
1985: Mineral Occurrence Map, Avalon Peninsula, Newfoundland. Newfoundland Department of Mines and Energy,
Mineral Development Division. Map 85-62.
Ha
Mussel Pond Pt.
25
0
50
McCartney, W.D.
1954: Holyrood, Newfoundland. Geological Survey of Canada, Paper 54-3 (map only).
1956: Argentia, Newfoundland. Geological Survey of Canada, Paper 55-11 (map only).
1957: Dildo, Newfoundland. Geological Survey of Canada, Map 13-1956.
1958: Geology of Sunnyside map-area, Newfoundland, 1N/13.
Geological Survey of Canada, Paper 584, 21 pages.
1967: Whitbourne map-area, Newfoundland. Geological Survey of Canada, Memoir 341, 134 pages.
rb
Cape
Dog
10
Map scales 1:250 000 and 1: 253 440
Map scales 1:50 000 and 1: 63 360
30 94
H
25
LANCE
45
Patrick’s Cove
St. Joseph’s
Witless Pt.
QUIDI VIDI FORMATION
Red and green sandstone; minor pebble conglomerate and
mudstone
Minor red sandstone and siltstone
45
Tinker Pt.
Tors Cove
500 Pd.
mel
Car
Pd.
Harbo
30
CUCKOLD FORMATION
Red, pebble to cobble conglomerate and sandstone
Bull Arm
Formation
Witless
Mo
bi
High Rocks Member: red, wavy bedded sandstone and shale
Gibbett Hill Formation
20
40
FERRYLAND HEAD FORMATION
Thin to medium bedded, gray sandstone; minor conglomerate
GIBBETT HILL FORMATION
Thickly bedded, light-gray sandstone; locally thinly bedded,
greenish-gray to red sandstone, siltstone, tuff and conglomerate
Bull Hd.
0
10
40
FAULT
20
SYNC
L
t
28
5500
5
40
o n 100
k
Bac
25
Pond
Little
30
High
Rocks
Mr.
South Hd.
40
Bay
R.
ys
rph
Mu
Little
Quidi Vidi Formation
D
100
500
Cape
Forest Field
50
45
Cu
35
30
Salm
CRO
SSI
NG
45
Bar
ach
ois
LIN
E
Mn
Mount Carmel
ok
Bro
ells
Mitch
20
Big
km
BEAVER
POND
HILLS
AN
T IC
S YN C
LI N E
100
Goose
berry
Cove
Mobile First Pond
0
33
Pond
Cooks
Cove
Mr.
25
Bay Bu
lls
Witless
Bay
50
101
Great
Gull
Pd.
25
40
Big
60
Harricott Pt.
25
60
Pd.
r
500
40
New Bridge
40
Rive
r
22
Williams and King (1979)
30
Riv
er
0
50
1K/11
92
50
12
40
8
20
Ship Cove
1K/12
10
KNOK HOUR
HILL
35
POND
ou
Great Barasway
ile
Paradise
Pond
OOD
HOLYR
1K/14
North
Harbour
onier
Salm
1K/13
INE
E
2
35
Little
1L/16
Fletcher
(1972)
30
nie
St. Catherine’s
Haricott
ric
C
in
Sk
0
50
55
Ha
Ri
ve
r
nd
Po
10
in
ab
20
1K/15
25
15
22
Gull
Mobile
AN
TIC
LIN
E
50
80
PO
ND
500
POND
45
s
35
Mo
CAPE BALLARD FORMATION
Thickly bedded gray sandstone and quartz-granule conglomerate
40
20
Pond
mo
Long Pt.
Maddox Cove Member: red mudstone and sandstone exhibiting
distinctive wavy bedding
Gray shale and siltstone, minor purple shale
Grates
Cove
Mr.
Pluton is presumed to be related to the Swift Current Granite in
the Belleoram (1M) map area, which has yielded the following
radiometric dates (Dallmeyer et al., 1981):
10
Country
Bay Bulls
Formation
SWIFT CURRENT GRANITE(?)
Pink to gray, medium grained granite to granodiorite; minor
diorite and gabbro
Cu
FLAT ROCK COVE FORMATION
Piccos Brook Member: locally derived breccia and red muddy
sandstone
BLACKHEAD FORMATION
Red and gray sandstone, siltstone and shale
Baccalieu
Member
Big Head
Mafic to felsic variegated flows, and pyroclastic and clastic
sedimentary rocks (
at west edge of map was formerly
assigned to the Love Cove Group)
Bay
Grates Cove Member: green siltstone and sandstone
Knobby Hill Member: gray conglomerate and siltstone
Predominantly crystal and lithic tuffs, commonly reworked
500
13
Mob
l
Sa
Mafic flows; includes minor felsic flows and clastic sedimentary
rocks
North Hd.
Cu
10
35
90
55
t
cho
i
41
SAWYERS
HILL
500
500
Millins
(1970)
I
30
500
10
Ba
ra
C
50
Colinet
10 0
Little
Little Barasway
500
Round
Pond
20
27
I
Cooks Cove Member: green to gray sandstone and interbedded
siltstone
Cuckold Formation
Motion Hd.
Bay Bulls
Big Pond
10
35
ine
Pb
35
0
Pond
0
50
Motion
40
10
R.
1N/2
15
40
Col
0
10
Pb
91
r
ve
Ri
r
70
Southeast
Placentia
Cu
45
S o u t h e as
m
bou
Rose
(1952)
s50
t Ar
0
50
50
0
ea
35
0
50
41
100
Pb
STAG
50
0
th
Petty
Harbour
BULL ARM FORMATION
Felsic flows and tuffs, and clastic sedimentary rocks
Cu
0
50
Big
30
25
500
25
500
60
Pph
La
1N/3
Pyr S o u
15
55
Fe
500
50
55
35
Har
1N/7
Placentia
Pb
Pointe Verde Cu
50
0
100
el
500
50
50
0
20
20
1
Maddox Cove Mr.
y
McCartney
(1954)
1N/4
McCartney (1967)
45
30
81
30
0
5010
Pb
Ba
B A Y
62
70
Harbour
Long Pd.
0
50
Cu
65
70
0
50 P d.
l
ul 40
G
e
dl
d
0
i
50
M
0
50
0
North
King
(1985)
60
0
11
Petty
Ferryland
Head
Fm.
Ba
McCartney
(1956)
100
50
15
500
Pb
Pb
20
Freshwater Cu
1N/6
1N/5
Pb
55
50
25
Moll Pt.
18
Sla
45
Dunnville
P L A C E N T I A
55
t
1M/8
(1953)
Shalloway Pt.
1N/10
1N/11
Nixon
and
Papezik
Hutchinson (1979)
50
Mn
Mn
500
65
Paddys
Pond
Gray to green volcanogenic mixtite
Cape Spear
Baccalieu Member: red pebble to cobble conglomerate and
sandstone; minor mudstone
Bay de
Verde
Formation
Maturin Ponds
Formation
le
McCartney
(1957)
Hsu
(1978)
45
FITZGERAL
DS
ANTICLIN
Hughes and
Malpas (1971)
Argentia
0
50
MA
RI
E
1N/12
Placentia
. Sound
Hr Pb
ia
nt
e
g
50
Ar
Mn
30
SY
N
C
LI
N
E
Ranger et al.
(1984)
McCartney
(1958)
1M/9
Latine Pt.
1N/15
1N/14
1N/13
35
Fox Harbour
VIL
LA
1M/16
65
500
Seal Cove
500
I
50
18
Mount
Pearl
35
40
0
50
20
0
50
Conception
Harbour
Cu
Pond
60
65
Pph
Holyrood
30
100 25
Mn
Wavy bedded, gray to green tuffaceous siltstone and arkose;
locally includes Whiteway Member consisting of red sandstone
and siltstone
35
61
35
0
Pb
Jenness
(1963)
101
20
Ocean
Mn
2
FAULT
Placentia
Junction
Fox I.
Isaac Pt.
20
Arm
100
100
50
0
10
Colliers
40
Paradise
Pph
60
30
10
0
T
E
0
500
BIG HEAD FORMATION
Gray to red arkose and granule conglomerate
ST. JOHN’S
500
Riverdale
80
25
30
500
IDg
2C/2
2C/3
2C/4
Christie
(1950)
10
Chap
00
Ship Harbour
2D/1
20
15
5
33
Mn
70
Sia
Mn
Upper Gullies
Harbour
Main
Whitbourne
500
20
Long Harbour
Head
Marysvale Cu
20
ie
g
70
40
MATURIN PONDS FORMATION
Red sandstone and mudstone exhibiting distinctive wavy
bedding; minor conglomerate
Cu
70
Kelligrews
45
40
ke
La
50
Colliers Pt.
40
Fe
1
SYNCLIN
Lon
25
ur
rbo
Lst
Cu
Makinsons
Pd.
COLINET
IDg
Ha
A
S
IDg
500
15
25
Mn
Au
Au
Grand
or
Bellevue Beach Member: gray pebble conglomerate
20
ns
Wi
50
Top
sail
Cha
mbe
rlain
s
Man
uels
Lon
g Po
nd Mn
Foxtrap
DUFFS
SOURCE MAPS FOR COMPILATION
20
HEART’S CONTENT FORMATION
Gray to black shale containing wispy sandstone laminae
St. Thomas
R.
GEOLOGICAL INDEX MAP
Long
Harbour
Crawley I.
Iona
I Dm
Islands
IDm
Brigus
South
River
50
0
10
IDm
30
r
ve
Ri
th
Nor
Bay
us
Brig
Au
Cove
N.T.S. INDEX MAP
1M/1
B
Y
T
I
N
T
50
0
0
O
54
100
O
E
56
50
0
O
58
40
60
35
0
50
BAY DE VERDE FORMATION
Old Perlican Member: red and gray, white-weathering sandstone,
siltstone and red mudstone
Blackhead
Formation
Old
Perlican
Mr.
Sugarloaf Hd.
Windsor
Heights
SIGNAL HILL GROUP (not listed in stratigraphic order)
Knobby
Hill Mr.
HEART’S DESIRE FORMATION
Olive-green sandstone
Logy Bay
St. Phillips
Little
Bell
I.
Stn
Kellys I.
I
Outer Cove
Portugal
Cove
Lance
Cove
40
Torbay Pt.
100
ISLAND
Fe
TRINNY COVE FORMATION
Olive-green and red sandstone, siltstone and conglomerate;
minor gray shale containing wispy sandstone laminae
y
Ba
Fe
0
10
Fe
Seal
R
30
0
10
50
0
47
80
Clarke’s
Beach
Snows
Pond
10
40
N
O
54°
0
35
50
Brine Is.
47
1K
56°
Blaketown
N
Big
Gull
Pd.
500
500
48
O
25
ROCKY HARBOUR FORMATION
Yellowish-green, cross-bedded, lithic sandstone
500
47°
58°
0
30
J
47°
1L
50
202
granite
11I
I
R
20
30
FA
LILLY UNCONFORMITY
Cape
Ballard
Formation
Flat
Rock
Cove
Fm.
50
BELL
Freshwater
r
To
Torbay
Piccos Brook
Member
Rocky Trinny
Harbour Cove
Fm.
Fm.
Heart’s
Content
Fm.
CROWN HILL FORMATION
Red pebble conglomerate and sandstone; locally, red siltstone
at base; minor green conglomerate
Flat Rock
Redmans
Hd.
Fe
LOWER CAMBRIAN
Heart’s
Desire
Fm.
0
Pyr
s 0
ert 10
Bay Roberts Rob
70
y
Ba
Coley’s Point
e
South
av
Burnt Pt.
Gr
e
0
D
0
1
y
45
Ba
Au
Cupids
T
UL
35
C
70 Green Pt.
LOWER TO MIDDLE
CAMBRIAN
unconformity
Undivided sedimentary rocks
ve
Co
0
10
500
Dildo
South
B
50
0
O
40
40
40
Trinny
Cove
Is.
LT
1N
1M
500
55
I
O
48
Old
Shop
Lst
U
FA
48°
Chapel
Arm
500
30
Spaniard’s
20
Bay
Butlerville
E
Bay
MIDDLE CAMBRIAN(?)
Random Formation
MUSGRAVETOWN GROUP (not listed in stratigraphic order)
Red Hd.
50
Wabana
25
SPREAD EAGLE GABBRO (and equivalents)
Diabase and gabbro (may feed Cambrian volcanic rocks)
unconformity
RANDOM FORMATION
White orthoquartzite interbedded with green, gray and red
arkose and siltstone; local basal conglomerate
Ore Hd.
Spare Pt.
rd’s
nia
Spa
25
73
25
Dildo
25
Arm
ya
Br
MIDDLE CAMBRIAN(?) TO
LOWER ORDOVICIAN
ADEYTON GROUP
21
ve
Co
nts
Upper Island
Cove
Shearstown
10
20
e
ac
Gr
Ha
20
45
AVALON
ZONE
St.
John's
Port aux
Basques
11P
500
500
100
N
A
H
C
b
2C
2D
48°
11O
O
49
Harbour
Grace rbour
Riverhead
0
50Long
Pd.
Tilton
Dildo
Lst
15
Fairhaven Pt.
Grand
Falls
12A
Stephenville
Fair Haven
Ba
O
50
YS
LL
KE
100
Pond
12B
O
49
Mn
Dildo
49°
CENTRAL MOBILE
BELT (DUNNAGEGANDER ZONES)
HUMBER
ZONE
ophiolite
Gander
Corner
Brook
50
2F
2E
49°
L
Gr ong
en Ra
vill ng
eI e
nli
er
O
40
New
Harbour
10
0
Ba
Norman’s
Cove
Sla
TION
JUNC
2L
12H
40
32
Harbour Grace
Islands
20
100
20
Bauline
20
NE
LI
C
N
SY
BR
O
O
L
51
km
15
Ba
Bay
E
51
50°
Deer
Lake
Collier
35
Riverhead
30
ND
PO
15
50
Collier Pt.
10
N
O
O
51°
50°
12G
Sla
30
150
0
0
60
Hopeall
5
0
.
Hr
NEWFOUNDLAND
0
50
100
150
km
12I
10
10
30 Great
Pinchgut
Mn
10
25
25
35
y
Ba
1
8
Pumbly
Cove
2M
Mn 10
Ba
Brennan Pt.
O
35
Hopeall Hd.
30 00
5
15
Green’s
Harbour
30
Bellevue
Pb
Carbonear I.
Carbonear
Bay
20
500
40
0
50
all
pe
Ho
52
Ba
50
0
65
20
Ba
Bay
50
15
20
20
00
10 5
15
20
500
Ba
100
Little Harbour Hd. A
35
Ocean
25
Pd.
Lst
Tickle
500 Ba
500
Whiteway
Ba
26
500
w
O
54
25
Bristol’s Hope
30
Pouch
Cove
Freshwater
Carbonear
Kellys Island Formation: dark silty shale and thickly bedded\
quartzose sandstone
Bonavista Formation (locally absent): red, green and purple shale
or slate and thin limestone beds; local quartz-pebble
conglomerate at base
I
UPPER CAMBRIAN(?) TO
LOWER ORDOVICIAN
?
?
REDMANS FORMATION
Gray to white orthoquartzite and minor siltstone
HARCOURT GROUP
10 Cu
0
30
Salmon Cove
20
Ochre Cove Formation: interbedded, thin sandstone and shale,
and glauconitic sandy siltstone
Crown Hill Fm.
Dtm
Victoria
Dominion Formation (Lower Ore Bed): oolitic, reddish-brown
ironstone
Little Bell Island Formation: white sandstone interbedded with
dark silty shale
Cu
25
0
10
Bay
15
Green Hd.
Pb
Po
20
500
Pond
VI
CT
OR
IA
an
70
0
Ne
O
56
100
c
Ti
500
e
ch
10
70
50
Perry’s Cove
50
BELL ISLAND GROUP (separated into lower, upper and Redmans
Formation on map)
Beach Formation: micaceous siltstone, shale and sandstone;
minor oolitic ironstone (McGraw and Eastern Head members)
SMITH POINT FORMATION
Pink massive limestone containing red shale partings and algal
structures
Cape
St. Francis
Feather Pt.
Whit
eway
Ba
Ba
0
Au
TIA
PLACEN
O
58
Western Hd.
50
10
100
Kingston
Long
20
Cavendish
Lst
Tickle Harbour
Pt.
ad
Cu
15
Chamberlains Brook Formation: green and red shale or slate
and thin limestone beds; manganiferous bed near base; spilitic
cherty pillow lava, including Cape Dog and Hopeall Head
members
Redmans Fm.
Smith Point Formation
Broad Cove
ve
Co
500
Bro
500
Mn
LI
N
H r.
500
Ba
0
50
Ba
Ba
.
Bk
30
Gull
Pd.
Lst
Masters Hd.
M35
La
I
Bull.I.
ADEYTON GROUP (individual formations not separated on map except
Smith point Formation)
Blackhead
50
Po
20
Pb
75
Adams Cove
20
50
0
Heart’s Delight
70
Ba
Pb
40
e
10
0
ll
Ba
Pb
rn
le
lC
CRO
SYN WN
CLI
NE
Bu
Ba
500
51°
500
Ba
he
tt
20
45 Western Bay Hd.
500
74
40
52°
O
15
30
500
ut
So
Li
Fe
0
50
Southern
Harbour
30
Western Bay
20
20
a
Se
Heart’s80
Lst Desire
Manuels River Formation: black shale and lenses of limestone;
mafic pillow lava and pyroclastics, including Hay Cove and
Chapel Arm members
Powers Steps Formation: graptolitic shale and minor siltstone
and sandstone; phosphatic and pyritic, oolitic ironstone at base
Brigus Formation: red, pink and green shale or slate and thin
limestone beds; basal conglomerate where formation rests
directly on Precambrian rocks
The Geological Survey, a division of the Department of Mines and Energy (the “authors
and publishers”), retains the sole right to the original data and information found in any
product produced. The authors and publishers assume no legal liability or
responsibility for any alterations, changes or misrepresentations made by third parties
with respect to these products or the original data. Furthermore, the Geological
Survey assumes no liability with respect to digital reproductions or copies of original
products or for derivative products made by third parties. Please consult with the
Geological Survey in order to ensure originality and correctness of data and/or
products.
25
Po
28
28
Little Harbour
East
60
Niagara Pt.
80
Burnt Point
Fe
Fe
Ochre Pit Cove
30
10
15
Long
Pd.
The purchaser agrees not to provide a digital reproduction or copy of this product to a
third party. Derivative products should acknowledge the source of the data.
WABANA GROUP
Elliott Cove Formation: gray, green to black, silty, micaceous
shale, slate and siltstone; limestone concretions
Northern Bay
Bk. 40
Bay
55
25
Ba
15
20
P
Labrador
10
0
10
0
35
Great
Southern
Harbour
kl
5
1500
PO 50
ND
Pinchgut Pt.
St.
Anthony
50
Arnold’s
Cove
Detailed mineral occurrence data are published separately on
Map 85-62 (O’Driscoll and King, 1985)
12P
500
Problematical fossil marking ..................................
40
20
JA
CK
S
500
F
24
35
Fe
ern
North15
15
25
LT
Unconformity (shown on legend and
stratigraphic section only) …..................................
Gold
Barite
Brick shale
Clay
Copper
Diatomaceous
earth
Iron
Fluorite
Limestone
Molybdenum
Manganese
Lead
Pyrrhotite
Pyrophyllite
Pyrite
Silica
Building stone
5
20
U
FA
Fold axis (anticline, syncline, with direction
of plunge ................................................................
Indication ................................
Fossil locality .........................................................
50
100
100
Showing ..................................
10
I
LOWER
ORDOVICIAN
Scotia Formation (Middle Ore Bed): oolitic, reddish-brown
ironstone
Clarenville Formation: gray to black, micaceous shale; minor
siltstone containing cone-in-cone limestone concretions
DISCLAIMER:
15
I
0
10
Axis of minor fold (plunging) ..................................
Fe
Fl
Lst
Mo
Mn
Pb
Po
Pph
Pyr
Sia
Stn
500
Heart’s
Content
10
500
m
A r
Prospect .................................
25
15
O
48 00
80
10
PI T
500
500
Big I.
Thames Harbour Pt.
Fe
0
550
20
15
75
l l
Cleavage (inclined, vertical) ..................................
Souther Pt.
u
Past producer (exhausted) .....
Deer Harbour Hd.
o
15
B
Bedding tops unknown (vertical) ...........................
CH
rb
100
Au
Ba
Bri
Cly
Cu
Dtm
Past pruducer (dormant) ........
54°
Y
A
Ha
Sia
Come By
Chance
Commodity
Developed prospect ...............
Bedding tops known (inclined, overturned,
horizontal) ..............................................................
56°
100
100
Deer
500
1
Sunnyside
MINERAL OCCURRENCES
75
0
50
New Perlican
ur
LO
NG
500
35
Pruducer .................................
10
80
HARCOURT GROUP (individual formations not separated on map)
Gull Island
TI C
500
CE
NT
RE
COME
50
0
0
50
E
LIN
TIC
N
A
NOTE:
10
5
25
0
50
0
50
Western
Pond
100
50
Fault (defined, approximate, assumed, thrust) ......
58°
Winterton
North Hd.
Grebes Nest Point Formation: dark shale, siltstone, and sandstone
Lower Island Cove
50
E
FA
UL
T
HI
500
BE
AC
BY
20
Gull Island Formation (Upper Ore Bed): oolitic reddish-brown
ironstone
35
10
10
70
Fe
Pittmans
Pond
20
St. Jones Hd.
45
Gravel Head Formation: dark shale; layers of phosphatic and
hematitic ironstone and silty shale near base
Island
15
Flambro Hd.
80
500
C
WABANA GROUP (individual formations not separated on map)
RO
MB
A
FL
Caplin Cove
Island
Pond 15
30
500
SILURIAN(?)
Diabase, diorite and gabbro sills
Baccalieu
0
50
75
LL
H
500
55
35
New Chelsea
0
10
0
50
I
AD
HE
Lead
Cove
Brownsdale
70
Hants Hd.
55
Southeast Pt.
LIN
FAULT
1
Centre for Earth Resources Research, Department of
Earth Sciences, Memorial University of Newfoundland,
St. John’s, Newfoundland A1B 3X5.
500
45
CHAN
CE
45
Status
New
10
Melbourne
5
Sibleys
Cove
20
West Random Hd.
Bald Hd.
AN
TIC
500
45
10
DEVONIAN
OR EARLIER
POWDER HORN DIORITE COMPLEX
Fine- to medium-grained diorite, gabbro and minor granite
Reddish-pink, medium grained granite and granite dikes and
sills, locally containing abundant gabbro inclusions
100
d
y
Ba
Low Point
60
10
35
SYMBOLS
60°
25
45
Island Cove
TRIASSIC
CLARENVILLE GRANITE
Pink to red, medium grained, biotite granite
POWDER HORN
DIORITE COMPLEX
Bay de Verde
,
48 00
Gray, medium grained diorite, gabbro and olivine gabbro
Clarenville
Granite
Split Pt.
Old Perlican
Cove
Hodge’s
Cove
Long 40
Beach
20
15
I
SOU
THW
EST
IONA ISLANDS
INTRUSIVE
SUITE
30
Fe
45
Perlican I.
25
Gooseberry Cove
Little Heart’s
Ease
30
TICKLE
Red Head Cove
50
East Random Hd.
500
Southport
M 50
A RCaplin
30
Daniel’s
Cove
15
Long I.
Hatchet
Cove
100
0
50
I
100
40
30
T
Pb
500
35
Contours in feet above maen sea level. Contour interval 100 feet.
East Hd.
D
SOUN
50
100
Sla
10
0
Geological cartography by Tony Paltanavage.
50
Fe
10
100
500
0
positive aeromagnetic anomaly
Goldmine Head
South Bird I.
100
50
St. Jones
Within
Hillview
25
30
RANDOM
North West
Brook
kilometres
BACCALIEU
Breakheart Point
100
55
exposure
IONA ISLANDS INTRUSIVE SUITE
Grates Cove
10
Duck I.
rd
40
10
Grates
Point
Cooks
Cove
25
Stn
Dark gray, fine grained diabase dikes
K/Ar 201 ± 2.6 Ma (whole rock) (Hodych and Hayatsu, 1980)
I
Verge I.
20
45
25
500
50
ARM
20
Bay
F Lst
Adeytown
Stn
50
20
Lady
Pt.
500
Lady Cove
20
TH
WEST
0
10
O
R
Sla
15
100
500
500
N
F
Deep
Bight
10
North Bird I.
Brittania
Hickman’s Harbour
Sla
5
Silldown Pt.
30
F
Sla
Weybridge
50
0
FAU
LT
Tilton Hd.
F
Copies of this map may be obtained from the Geoscience
Publications and Information Section, Geological Survey,
Department of Mines and Energy, P.O. Box 8700, St. John’s,
Newfoundland, Canada, A1B 4J6.
http://www.geosurv.gov.nf.ca
100
40
CO
VE
Fagans
Pond
U
SO
Stn
F
Mn
10
re
Lst
0
ughfa
10
0
Lst
Pigeon
Pt.
55500
20
D
N
Scale 1:250 000
Green I.
15
o ro
Aspey
Brook
Thoroughfare
50
IT
SM
cly
Snooks
Harbour
cly
The
50
White
Rock 100 Gin 30
Cove
Lst
H
Anthony I.
5
Ivanhoe
75
500
Geological contact (defined, approximate,
assumed, gradational) ...........................................
52 30
Diabase and diorite dikes containing euhedral plagioclase
phenocrysts
Ireland’s Eye
Eye
Monroe
F Elliot’s
Cove
30
GENERAL
I
Ragged
Islands
Th
0
10
Red
Pt.
Clarenville
20
Ireland’s Eye Pt.
10
0
Harcourt
Clarenville
South
O
40
O
I
Ireland’s 100
40
cly
Somerset
Mn
ACKNOWLEDGEMENTS
100
Ve
F
Bri
35
Popes
Harbour
10 0
Shoal
Harbour
F
Delbys
Cove
West Pt.
Pond
F
30
I
Lady
F
Barton
F
Grindstone
Hd.
F
0
50
Map 88-01
0
50
Rocky
500
Pond
cly
Recommended citation:
King, A.F.
1988: Geology of the Avalon Peninsula, Newfoundland
(parts of 1K, 1L, 1M, 1N and 2C). Newfoundland Department
of Mines and Energy, Map 88 – 01.
50
53 00
I
O
Milton
Previously unpublished mapping by A.F. King benefitted
greatly during its early stages from the guidance of W.D.
Bruckner (Conception Group), V.S. Papezik (Harbour Main
Group) and T. Fletcher (Cambrian biostratigraphy, Cape St.
Mary’s peninsula). Special thanks are extended to M.M.
Anderson, T. Calon, B. Greene, J. Malpas, S.J. O’Brien, C.F.
O’Driscoll, G. Parsons, R.K. Stevens and H. Williams for
comments made in the field and for informal discussions.
Capable field assistance was provided by J. Hill, T. Brace
and D. Andrews.
H. Miller and J. Tod are thanked for the interpretation of
geophysical data, and C.F. O’Driscoll for the compilation
of the mineral occurrences.
The offshore geological data were provided by the
Atlantic Geoscience Centre, Geological Survey of Canada,
and have been published previously in a less detailed form
in King et al., 1986. Special thanks are extended to G.B.J.
Fader for his assistance in compiling the data for this map.
Funding for part of this project was provided by the
Natural Sciences and Engineering Research Council of
Canada under Grant A-7052 to A.F. King.
The base map was assembled by the Geological Survey
of Canada from maps published at the same scale by the
Surveys and Mapping Branch, Department of Energy, Mines
and Resources in 1970, 1971.
The bathymetric contours were provided by the Canadian
Hydrographic Service from the Natural Resource Map series
and from unpublished maps.
10
I
48 15
Georges
Brook 100
(parts of 1K, 1L, 1M, 1N and 2C)
10
20
O
I
F
(Digital reproduction)
1
Geology compiled by A. F. King
Map series edited by S. P. Colman-Sadd and J. P. Hayes
30
I
I
Fo
40
I
gn
50
I
Si
I
LON
G
54 00
I
IC
O
Tremadoc
10
I
SA
LMO
N
O
48 15
I
Middle Cambrian
O
54 15
Diabase dykes (Dd) intrude Musgravetown Group
and Late Cambrian Elliot Cove Formation (latter
relationship not shown on map) and postdate
regional deformation of presumed SilurianDevonian age.
Connecting Point Group is thought to be western equivalent of
conception and St. John’s groups, due to facies similarity and
inferred stratigraphic relationship between Bull Arm Formation
and Signal Hill Group. Transition is hidden beneath Trinity Bay
synclinorium.
Triassic dykes ( ) intrude Whalesback gabbro and
Drook and Fermuse formations in three separate
exposures. Aeromagnetic anomaly implies near
continuity between exposures. Age based on
radiometric dating (Hodych and Hayatsu, 1980.
Nature and age of basement
rocks unknown. No rocks
older than Harbour main and
Connecting Point groups are
exposed on Avalon
Peninsula.