Woodgreen, Northern Territory : explanatory notes
Northern Territory Geological Survey
E-Publications; E-Books; PublicationNT; Australia 1:100 000 Geological Map Series
2007
Australia 1:100 000 Geological Map Wood 5458; Australia 1:250 000 Geological MapAlcoota SF5310; Australia 1:250 000 Geological MapAlcoota SF5310
1:100 000
Made available via the Publications (Legal Deposit) Act 2004 (NT); Available from GEMIS - Geoscience Exploration and Mining Information System
English
Geology; Georgina Basin; Arunta Region
Northern Territory Government; Northern Territory Government
Darwin
1st ed.
Australia 1:100 000 Geological Map Series
application/pdf
9780724571321
0811-6296
Attribution International 4.0 (CC BY 4.0)
Northern Territory Government
https://creativecommons.org/licenses/by/4.0/
https://geoscience.nt.gov.au/gemis/ntgsjspui/handle/1/81885 [GEMIS]
https://hdl.handle.net/10070/794795
https://hdl.handle.net/10070/794807
23 35 25 12 20 7 35 25 40 60 3015 15 20 20 50 35 40 20 65 45 30 30 15 60 80 45 35 30 30 10 10 10 10 10 60 20 25 40 5 4 25 10 40 15 3 5 15 30 4510 7 45 15 30 40 30 20 55 80 2030 20 70 80 84 20 20 7 10 720 10 10 5 15 70 50 LPst LPst LPst LPst LPst LPst LPst LPst LPstLPsa LPsa LPsa LPsa LPsa LPsa LPra LPra LPra LPor LPbo LPbo 10 LPra 42 40 00 m E 42 50 00 m E 42 70 00 m E 43 00 00 m E 43 80 00 m E 43 50 00 m E 43 10 00 m E 75370000mN 42 40 00 m E Skinner Bore CMS2 Mount Skinner 4 Mount Skinner CMS1 BH2 CMS4 BH1 3 2 B C A Mount Skinner 2 Mount Skinner 4 CMS3 New Bore Skinner 3 Mount Qa Qa Qa Qa Qa 1 C-- mc LPor LPst LPra LPbo LPsa LPg LPg LPg qb Adnera Member Tops Member Grant Bluff Formation Oorabra Arkose Boko Formation qb m03-224.dgn Costeans Surface samples Drillhole location anticline, syncline mapped fault trace of cupriferous outcrop bedding trend from airphotos quartz breccia Qa undivided granitoids Explorations surface occurrence sampled by Centamin 3 CRA soil sample traverse CRA grab sample Centamin cored drillhole NTGS cored drillhole CMS2 Kunoth Knob D E F qb LPut Cmc LPut ?Utopia Quartzi te ?Chabalowe Formation Cenozoic (undif ferent iated) LPut DARWIN NORTHERN BASIN DARWIN NORTHERN TERRITORY Prospect Mount Skinner GEORGINA 43 80 00 m E 43 10 00 m E 42 50 00 m E BH1 Mount Skinner 4 A geochemical survey by Utah 10 LPst (cupri ferous interval) Kennecott Explorations percussion bulldozed by Kennnecott 7560000mN 7560000mN 7558000mN 7550000mN 7545000mN 7535000mN7535000mN 7538000mN 7540000mN 7548000mN LEGEND Cent ra l Mount Stuar t Fm Figure21. Mount Skinner geological sketch map showing cupriferous outcrop, drillhole locations and surface sampling. Compiled from company reports and Haines (2004), after Dunster etal2007. 1.5 m of 1500 ppm Cu at 115.9 m depth in BH3. Kennecott concluded that highest grades were solely surface enrichment and ceased operations in late 1966 (Halliday 1966). Following a review by Grainger (1968a), the Mines and Water Branch of the Northern Territory Administration drilled four cored holes (Mount Skinner to 4) totalling 596 m, which penetrated the Central Mount Stuart Formation and entered older sedimentary rocks beneath. Anomalous Cu continues downdip in the Tops Member, but not at an economic grade. The highest Cu assay was 6500 ppm for a 0.3 m interval at about 203 m depth in Mount Skinner 3. However, this hole unexpectedly intersected two intervals of elevated Pb and Zn that seemingly occur independently of Cu. One .5 m interval in the Grant Bluff Formation