263000
264000
265000
266000
267000
268000
269000
270000
271000
272000
273000
274000
275000
276000
277000
278000
279000
280000
281000
282000
283000
284000
285000
286000
287000
288000
289000
290000
Younger than 500 million years LEGEND
Burnham Limestone
µ
Marino
Water
Holocene (11 700 years to present day) SEMAPHORE SAND MEMBER: Quartz beach sand SEMAPHORE SAND MEMBER: Coastal dune sand Beach gravel
( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( ( (
Unconsolidated sand dunes, drapes and spreads
Talus gravel, sand and clay Alluvial sand in active stream channels Alluvial clay of raised terraces of Onkaparinga River
Happy Valley Reservoir
Alluvial clay of valleys
Hallett Cove
Pleistocene (2.6 million to 11 700 years)
OCHRE COVE FORMATION: Iron-mottled pebbly sandstone KURRAJONG FORMATION: Clayey sand and silica-cemented conglomerate BURNHAM LIMESTONE: Fine-grained limestone PIRRAMIMMA SANDSTONE and SEAFORD FORMATION: Yellow and buff sandstone, pebbly sandstone, clay NGALTINGA FORMATION: Grey and red mottled clay; commonly capped with calcrete CHRISTIES BEACH FORMATION: Alluvial fan clay, sand and gravel
86
76
75
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Pliocene (5.3 to 2.6 million years)
Clarendon
HALLETT COVE SANDSTONE: Calcareous fossiliferous sandstone
Lonsdale
Iron-cemented surface on bedrock
Oligocene (34 to 23 million years) PORT WILLUNGA FORMATION: Fossiliferous limestone
Mount Bold
SOUTH MOUNT LOFTY RANGES
Reservoir
Eocene (56 to 34 million years)
O'Sullivan Beach
Carboniferous–Permian (c. 300 million years) CAPE JERVIS FORMATION: Pebbly and bouldery claystone; sandy, laminated claystone with dropstones NORTH MASLIN and SOUTH MASLIN SANDS: Cross-bedded medium and coarse-grained sand BLANCHE POINT FORMATION: Glauconitic, fossiliferous calcareous siltstone; hard cherty bands; glauconitic TORTACHILLA LIMESTONE at base Iron-cemented sand (?NORTH MASLIN SAND)
88
5
po
Christies Beach wastewater treatment plant
Baker Gully
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Christies Beach
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MCLAREN FLAT ROAD Kangarilla
11
Port Noarlunga
47
Ì
Sand
23
Blewitt Springs
64
82
32
18
34
49
13
83
KNOTTS HILL ROAD
70
7
33
Old Noarlunga
60
14
6
59
37
Ì 72
85
57
22
45
35
41
69
53
61
Ì 54
17
1
Sand
24 McLaren Flat
67
24
74
50
73
79
65
28
20
21
36
31
43 10
77
55 42
25
46
12
81
29
90
15
66
9
McLaren Vale
Ochre Point
Rocla North
Ì
38
63 62
Hanson
Ì
27
Rocla
Maslin Beach
Ì
48
44
8
87
71
52
58
84
30
91
89
40
Blanche Point
39
4
68
2
51
Port Willunga
Older than 500 million years LEGEND
80
Snapper Point
DELAMERIAN OROGENY: Folding and cleavage formation, c. 500 million years Barite vein Quartz vein NORMANVILLE GROUP: c. 520 million years FORK TREE LIMESTONE: Pale grey limestone with archaeocyaths HEATHERDALE SHALE: Dark grey, slaty siltstone with black phosphate nodules
Willunga
19
Burnham Limestone
56
3
SELLICK HILL FORMATION: Dark grey, ribboned, silty limestone WANGKONDA FORMATION: Massive, dark grey limestone
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MOUNT TERRIBLE FORMATION: Arkosic grit, overlain by siltstone and sandstone
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WILPENA GROUP: c. 600 million years BUNYEROO FORMATION: Maroon, fine-grained siltstone ABC RANGE QUARTZITE: White, cross-bedded quartzite
78
Aldinga Scrub (CP)
&
Aldinga Water Storage
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PORT STANVAC SANDSTONE MEMBER: Laminated and cross-bedded red sandstone
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SEACLIFF SANDSTONE: Pale grey and red sandstone, quartzite and red siltstone BRACHINA FORMATION: Red and green siltstone and fine-grained sandstone NUCCALEENA FORMATION: Laminated pink dolomite UMBERATANA GROUP: c. 650 million years REYNELLA SILTSTONE MEMBER: Mostly massive siltstone with small rock fragments
16
Silver Sands
ELATINA FORMATION: Pink-brown sandstone with red granule bands
TAPLEY HILL FORMATION: Calcareous siltstone and sandstone; intraclastic and stromatolitic limestone BRIGHTON LIMESTONE: Massive oolitic limestone WILMINGTON FORMATION: Massive, green-grey, fine-grained sandstone Laminated to rippled, grey to green siltstone MARINO ARKOSE: Lime-cemented, gritty arkose and minor limestone ANGEPENA FORMATION: Rippled, mud-cracked, red siltstone; fine-grained sandstone Dark grey, very thinly laminated, slaty siltstone TINDELPINA SHALE MEMBER: Laminated, pyritic, black shale and dolomite
Sellicks Beach
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STURT TILLITE: Massive, cleaved, pebbly and boulder siltstone (diamictite)
Gritty arkose lenses
Sandstone layers Laminated siltstone layers
DEM_25/07/2019 - 205206_001
285000 BURRA GROUP: c. 750 million years BELAIR SUBGROUP: Laminated, grey siltstone Quartzite layers MITCHAM QUARTZITE: Massive, coarse-grained, feldspathic quartzite 286000 287000 288000 289000 STONYFELL QUARTZITE: Feldspathic quartzite, sandstone, siltstone SADDLEWORTH FORMATION: Laminated dark grey and green siltstone Quartzite layers PALAEOPROTEROZOIC BASEMENT (c. 1600 million years) BAROSSA COMPLEX: Gneiss, schist ALDGATE SANDSTONE: Feldspathic, pebbly sandstone; heavy mineral cross-laminations MONTACUTE DOLOMITE: Blue-grey, thinly bedded dolomite with black chert lenses WOOLSHED FLAT SHALE: Laminated and sandy grey-green siltstone Brecciated WOOLSHED FLAT SHALE
263000
264000
265000
266000
267000
268000
269000
270000
271000
272000
273000
274000
275000
276000
277000
278000
279000
280000
281000
282000
283000
284000
290000
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Scale: 1:50 000
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Kilometres
1
0
1
2
3
4
5
6
7
8
9
10
Kilometres
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Topographic detail
Geological boundary and fault
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Vineyard Mclaren Vale Wine Region Aldinga Scrub Conservation Park
Water storage Sand or clay pit Winery
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Roads Secondary road Track
Conformable contact Intrusive contact Erosional contact Concealed fault Fault
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Ì
GDA 94 Map projection Transverse Mercator Zone 54
&
Watercourse River
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Wastewater treatment plant
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Holocene sand
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GEOLOGY OF THE McLAREN VALE WINE REGION
Source: McLaren Vale Grape Wine & Tourism Association
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