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
1 IntroductIon Woodgreen i s t h e c e n t r a l - n o r t h e r n 1 : 1 0 0 0 0 0 m a p s h e e t w i t h i n alcoota, a n d i s c e n t r e d a p p r o x i m a t e l y 1 7 0 k m n o r t h - n o r t h e a s t o f al i c e sp r i n g s i n t h e s o u t h e r n no r t h e r n te r r i t o r y (Figure1). th e m a p a r e a i s b o u n d e d b y l a t i t u d e s 2 2 0 0 ' s a n d 2 2 3 0 ' s, a n d b y l o n g i t u d e s 1 3 4 0 0 ' e a n d 1 3 4 3 0 ' e. th i s r e p o r t a c c o m p a n i e s t h e Fi r s t ed i t i o n 1 : 1 0 0 0 0 0 g e o l o g i c a l m a p (H a i n e s 2 0 0 4 ), a n d i s d e r i v e d from fieldwork undertaken for the Northern Territory ge o l o g i c a l su r v e y (ntgs) d u r i n g se p t e m b e r oc t o b e r 2 0 0 2 . Fi e l d w o r k a n d m a p c o m p i l a t i o n u t i l i s e d 1 : 2 5 0 0 0 colour aerial photographs flown in 1982 and was assisted b y la n d s a t i m a g e r y . in t e r p r e t a t i o n o f s u b s u r f a c e g e o l o g y was facilitated by airborne geophysics acquired in 1997 b y ntgs a s p a r t o f t h e al c o o t a - al i c e sp r i n g s s u r v e y . Pr e v i o u s m a p p i n g i n t h e a r e a w a s c a r r i e d o u t b y ge o s c i e n c e au s t r a l i a (t h e n Bu r e a u o f mi n e r a l re s o u r c e s ) a s p a r t o f a regional Georgina Basin study (Smith 1972) and the First Edition mapping of ALCOOTA (Shaw and Warren 1975, sh a w et al 1979). The 1996 AGSO Timescale is used in this report. Cited l oc a t i ons i n t hi s publ i c a t i on a r e ba s e d on ma p gr i d of Australia zone 53 coordinates and the GDA94 map datum, a nd a r e de e m e d a c c ur a t e t o 50 m . to c onve r t f r om t he AGD66 AMG coordinates used on older maps, block shift all data 128 m to the east and 170 m to the north. Accessandlanduse Woodgreen i s a c c e s s e d f r om al i c e spr i ngs vi a t he sa ndove r H i gh w a y , w hi c h i s a w i de , f or m e d gr a ve l r oa d t ha t e xt e nds nor t h f r om t he Pl e nt y H i ghw a y t hr ough Woodgreen a nd t he n c ont i nu e s e a s t - nor t he a s t t o la ke na s h ne a r t he Q ue e ns l a nd bor de r . a publ i c r oa d a l s o e xt e nds f r om t he sa ndove r H i ghw a y ne a r Woodgr e e n hom e s t e a d, no r t hw a r d t o mount ski nne r hom e s t e a d a nd t he n w e s t w a r d t o ti tr e e on t he st ua r t H i ghw a y . an e a s t - t r e ndi ng publ i c r oa d a t about 7529000mN runs between this road and the Sandover H i ghw a y . num e r ous s t a t i on t r a c ks t r a ve r s e t he r e m a i ni ng a r e a s of t he m a ps he e t . Over 90% of Woodgreen i s c ove r e d by t he mo unt ski nne r a nd Woodgr e e n pa s t or a l l e a s e s , a nd i s us e d f or c a t t l e gr a z i ng. ar e a s of abor i gi na l f r e e hol d a nd gove r nm e nt - ow ne d l a nd oc c ur a l ong t he w e s t e r n bounda r y of t he s he e t a r e a , t oge t he r w i t h l i m i t e d a r e a s s out h of Woodgr e e n hom e s t e a d. the s out he r n por t i on of t he e a s t e r n bounda r y of t he s he e t a r e a f a l l s w i t hi n t he abor i gi na l - ow ne d al c oot a pa s t or a l l e a s e . regionalgeologicalsetting Woodgreen s t r a ddl e s t w o m a j or ge ol ogi c a l dom a i ns : t he pr e dom i na nt l y Pa l a e opr ot e r oz oi c ar unt a re gi on i n t he s out h a nd t he ne opr ot e r oz oi c t o Pa l a e oz oi c ge or gi na Ba s i n i n t he nor t h (Figure2). se ve r a l i nl i e r s of ar unt a re gi on r oc ks a r e a l s o e xpos e d w i t hi n t he ge or gi na Ba s i n. the ar unt a re gi on ha s a c om pl e x s t r a t i gr a phi c , s t r uc t ur a l a nd m e t a m or phi c hi s t or y e xt e ndi ng f r om t he Pa l a e opr ot e r oz oi c to the Palaeozoic (Collins and Shaw 1995, Scrimgeour 2003, 2004) . it c a n be di vi de d i nt o t hr e e pr ovi nc e s w i t h di s t i nc t pr ot ol i t h a ge s . the ai l e r on Pr ovi nc e , w hi c h c om pr i s e s m os t of t he ar unt a re gi on, f or m s pa r t of t he nor t h aus t r a l i a n cr a t on a nd ha s de pos i t i ona l a nd i nt r us i ve a ge s t ha t l a r ge l y fall within the period 18801710 Ma, similarly to the adjacent Tennant and Tanami regions (Collins and Shaw 1995, Smith 200 1 ). as w e l l , t w o di s c r e t e younge r t e r r a ne s e xi s t w i t hi n t he ar unt a re gi on: t he Wa r um pi Pr ovi nc e , w hi c h ha s precursor ages of 16901600 Ma; and the Irindina Province WOODGREEN NTGS 2004 Sandover PlentyTanami St ua rt Hig hw ay Highway Hi gh wa y Road ALICE SPRINGS NGALIA BASIN MOUNT PEAKE ALCOOTA ALICE SPRINGS NAPPERBY HERMANNSBURG HENBURY RODINGA HALE RIVER HALE RIVER TOBERMOREY ELKEDRA HUCKITTA 0 100 km SANDOVER RIVER SIMPSON DESERT NORTH ILLOGWA CREEK HAY RIVER BARROW CREEK AMADEUS BASIN PEDIRKA BASIN EROMANGA BASIN WISO BASIN GEORGINA BASIN ARUNTA REGION ARUNTA REGION N o rt h e rn T e rr it o ry Q u e e n s la n d AO7-071.ai 2500' 2400' 2300' 2200' 2100' 13800'13630'13500'13330'13200' 1:250 000 sheet major road railway Figure1. loc a t i on of Woodgreen.