ResearchOnline@JCU
This file is part of the following reference:
Hewson, Simon Andrew John (1996) A structural examination of the Telfer gold-copper deposit and surrounding region, northwest Western Australia: the role of polyphase orogenic deformation in ore-deposit development and implications for exploration. PhD thesis, James Cook University.
Access to this file is available from:
http://eprints.jcu.edu.au/27718/ If you believe that this work constitutes a copyright infringement, please contact
[email protected] and quote http://eprints.jcu.edu.au/27718/
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LITHOLOGY
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MAPPED and COMPILED: Simon Hewson (JClJ)
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DRAWN: Jane Breale~
DATE: March, 1996
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LITHOLOGY rp;;-l Permian Pat.aon Formation L..:..:.J (IIuvloglacials)
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JAMES COOK UNIVERSITY
-102lnteraeclion lineation
LIBRARY
Faultin9 -S1 -82
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Structural Geology of the 0' Callaghans Corridor
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MAPPED and COMPilED: Simon Hewson (JCU) DATE: March, 1996
SCALE: _1:50,000
SUMMARY TABLE OF THE DEFORMATION HISTORY IN THE TELFER REGION· (For use with Sections A, C, D & E) S
Event
Upright open to tight and isoclinal
Teetollie R
NW -SE trending fold axes
NE-SW directed tectonic
Recumbent monoclinal folding; locally
S 1 : 15,30' -7 SW,W
South-west directed sub-
overturned NE (short) limbs; coarsely
F~
horizontal thrusting/
spaced axial plane cleavage (S I), which
(both strongly refolded by
vertical shortening;
exhibits a top-to SW shear sense.
D2)
locally extensional
Upright open to tight NW-SE trending
S2 : 70,90' -7 SW, SSW
NE-SW directed bulk
regional folds, with a penetrative axial
F~
: 0,50' -7 NW,SE
inhomogeneous tectonic
plane cleavage (S2).
L~
: steep pitch on S2
shortening (230-050')
most
D2
Orientation
Ie
now recumbent.
: 2,15' -7 NW,N
Recumbent asymmetric monoclinal
02
NE directed sub-horizomal
folding and discrete sub-horizontal
S)': 10,20' -7 315,340'
crenulations. Most examples are meso-
F~
,F; :
thrusting/differential movement and vertical
NNE
shortening. Gravity-
scale; rare axial plane cleavage (S3)'
0,5' -7 NNW,
induced collapse post-D2. Upright cross folding of D2 folds with a
S4 : 70,85'-7 255,
rare coarsely spaced axial plane crenulation cleavage (S4); generally
F~
meso-scale folding.
265
inhomogeneolls tectonic
: 40,45' (variable) -7
shortening (255-075')
320'
Upright kink folds, cross folds with associated weak coarsely spaced
(b) Mainly brittle stmctures including veining, dolerite dikes, fault and kink folds.
04
S5: 70,85' -} 290,300'
WNW-ESE directed
(inc!. kink fold axial
inhomogeneous tectonic
plane)
cleavage (cf. Chin et al, 1982).
ENCLOSURE 1
WSW-ENE directed
shortening (290-110')
S5: 75,85' -7 350, 355'
NNW-SSE / N-S directed
(inc!. kink axial plane)
tectonic compression
(j]
= 345-165" to N-S.
Yeneena Group
Broadhurst Fm.
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Coolbro Fm. Basement Gneisses (undiff. Rudall Complex)
7540000mN
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Numerous closely spaced anticlinal and synclinal folds commonly overturned to the SW
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7520000mN
Antiform
10km I
Synform Fault Location
ENCLOSURE 2
Geology of the Rudall Metamorphic Complex and Lower Yeneena Group, Paterson Province, and field locations (For use with Section B)
TELFER DOME
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