Pedirka Basin

FIGURES 1. Pedirka Basin, South . Wells and seismic lines. (204548-087) 2. Schematic section across the Eromanga, Pedirka and Simpson basins. (204548-057) 3. Pedirka Basin, . Top Purni Formation depth structure. (204548-088) 4. Geological summary of the Arckaringa, Pedirka and Simpson basins. (204548-025) 5. Pedirka Basin, South Australia. and geothermal tenements. (204548-089)

Petroleum and Geothermal in South Australia 5 134°0'E 135°0'E 136°0'E 137°0'E NORTHERN TERRITORY

26°0'S ª¨ Erabena 1 26°0'S ª18 ªDalmatia 1 (RR) ªOolarinna 1 h Purni 1 Simpson Desert (CP) ª Glen Joyce 1 ug Mount Hammersley 1 Mokari 1 o ª r ª ª T Witcherrie 1 a Witjira (NP) ª 3 g Cur 1 in ª r Mount Crispe 1 Macumba 1 ª E ª ª 14 2 ª ª Killumi 1 4 ª ª Walkandi 1 ª¨ ª5 Pedirka Basin Simpson Basin

Eromanga Basin ªEOB 1 Warburton Basin 27°0'S

Miandana 1 27°0'S ª¨ Coongra 1 1A ª 2 Nicholson 1ª1A ª 2 ª ªTodmorden 1 2 ª Officer Basin ªYardinna 1 6 ª3 ªª¨ 22 ª2 Oodnadatta 1 23 ª ª Lambina 1 5 ª Oodnadatta Town Bore 2 ª 24 ª Arckaringa Basin "ª Oodnadatta ªComalco Uphole 2 " Mount Willoughby 1 ª9 Oodnadattaª ªToodla 1 10 ª SOUTH AUSTRALIA 2 1A ª 134°0'E 135°0'E : :: 136°0'E 137°0'E

02550km Petroleum wells Siesmic lines (3D excluded) ª Dry hole Seismic – post 2000 South Australian Lamberts ª¨ Dry hole with oil shows Seismic – 1950–1999 " Pedirka Basin Parks with petroleum South Australia exploration access Parks with no petroleum WELLS and SEISMIC LINES Figure 1 exploration access DSD 204548-087 A 200 km 430 km 230 km B NT/SA VARIABLE HORIZONTAL SCALE SA/QLD MUSGRAVE BLOCK Mount Alexander INNAMINCKA Sandstone Member SIMPSON DOME DESERT 0 QUATERNARY AND TERTIARY Mount Howie Sandstone C oo rik ia Winton Formation na EROMANGA S a n d s to n e

-1 Ma laru Mudstone ckunda Formation Al Wo old Oodnadatta Fm ridg oolebuc ion e Li T Format mesto Coorikiana ERINGA ne Member Sa tone B BASIN nds u allumbilla Formatio le TROUGH ll O W n Bu Sha do odna lldog g datta Formation Sh DALHOUSIE – ale Murta Fm

KILOMETRES (AHD) McDILLS Adori Namur Sst Sst WestbourneMcKinlay Cadn B RIDGE a-owie Fm irkhea Mbr d F -2 ? Hutton m Sa Fm ? nd Alge ? st bucki one ? on na Sanst e PEDIRKA BIRDSVILLE BASIN Poo nna Fm TRACK RIDGE Pe lowa era Pee NAPPAMERRI ra Fm SIMPSON GROUP Wa Fm lkandi BASIN COOPER -3 POOLOWANNA TROUGH PRE-PERMIAN BASIN PEDIRKA NT QLD BASIN A Sediments with significant SIMPSON Craton-derived materials (reservoirs) BASIN PATCHAWARRA Sediments with significant TROUGH volcanic-arc-derived material (seals) B NAPPAMERRI Western margin of 0 100 200 COOPER GIDGEALPA – TROUGH KILOMETRES BASIN MERRIMELIA – Drn T.McK INNAMINCKA RIDGE 204548-057 Figure2b Schematic section across the Eromanga, Pedirka and Simpson asins. 134°0'E 135°0'E 136°0'E 137°0'E NORTHERN TERRITORY 26°0'S 26°0'S

Eringa Trough

Pedirka Basin 27°0'S 27°0'S

" Oodnadatta

"

Oodnadatta

134°0'E SOUTH AUSTRALIA 135°0'E 136°0'E 137°0'E

0 25 50 km

South Australian Lamberts

" Pedirka Basin ADELAIDE South Australia TOP PURNI FORMATION DEPTH STRUCTURE Figure 3 DSD 204548-088 DEPOSITIONAL AGE ROCK UNIT LITHOL- COMMENTS OGY ENVIRONMENT

Maximum Thickness 800m Average Thickness (570m) Braided fluvial Reservoirs rely on overlying marine shale seal. ALGEBUCKINA Small anticlinal traps requiring SANDSTONE close seismic grid. Mid-Late Intraformational seals rare. 290m Meandering or Uneconomic oil in POOLOWANNA (191m) anastomosing fluvial, Poolowanna 1 FORMATION minor associated

JURASSIC floodplain deposits.

Early

EROMANGA BASIN

Lacustrine and low Thickness and extent strongly energy, meandering structurally controlled requiring Late 190m fluvial. close seismic coverage. (192m) PEERA PEERA Variable quality, discontinuous FORMATION reservoirs.

TRIASSIC 130m Shallow, ephemeral Tight, potential seal to Middle (107m) lacustrine. underlying Permian where WALKANDI present. Possible local FORMATION reservoir development as for Arrabury Formation.

Early (See Cooper Basin)

Late SIMPSON BASIN

MT TOONDINA Lacustrine, Fair + good gas - and oil - FORMATION meandering fluvial prone source rocks, thermally PURNI 600m and back swamp. mature for oil generation. FORMATION (420m)

PERMIAN STUART 350m Marginal Stuart Range Formation Early (192m) RANGE FM marine. could provide excellent seal. 490m(158m) CROWN POINT BOORTHANNA Shallow marine- Reservoir sands may be FORMATION FORMATION fluvial periglacial. developed in Crown Point 600m + ? 420m (112m) (276m) and Boorthanna Formations

LATE CARB PEDIRKA ARCKARINGA BASIN BASIN

UNDIFFERENTIATED WARBURTON, Flat to steeply dipping. OFFICER AND Locally highly structured.

DEVONIAN

CAMBRIAN- AMADEUS BASIN SEDIMENTS 204548-025 Figure 4 Geological summary of the Arckaringa, Pedirka and Simpson asins.b 134°0'E 135°0'E 136°0'E 137°0'E NORTHERN TERRITORY 26°0'S 26°0'S

Simpson Desert (RR) PELA 77 PELA 332 Simpson Desert (CP)

Witjira (NP)

Eringa Trough

PELA 159 PELA 160 Pedirka Basin

Simpson Basin

Eromanga Basin

Warburton Basin

PELA 333 27°0'S 27°0'S

Marla PELA 334 Marla PELA 335 Officer Basin PELA 604 PEL 499 PEL 117 Arckaringa Basin " Oodnadatta

"

Oodnadatta PELA 605

PELA 604 134°0'E SOUTH AUSTRALIA 135°0'E PEL 121 136°0'E 137°0'E

Petroleum tenements Petroleum exploration licence application (PELA) 0 25 50 km Petroleum exploration licence (PEL) South Australian Lamberts " ADELAIDE Pedirka Basin Parks with petroleum exploration access South Australia Parks with no petroleum exploration access PETROLEUM TENEMENTS Figure 5 DSD 204548-089