Salinic and Acadian deformation included an early phase of recumbent folding, thrusting, upright tight to isoclinal
folding, and high-angle normal, reverse, and strike-slip faulting.
The S1 can be related with west-vergent to subvertical isoclinal
folds with N-S trend and centimetre- to meter- scale.
Within the adjacent Proterozoic Newport Neck Formation, NW- to N-trending, tight to isoclinal
, west-verging [F.sub.1] folds with slaty [S.sub.1] cleavage have been refolded by N-trending [F.sub.2] folds with an associated dominant [S.sub.2] cleavage and N-trending broad upright [F.sub.3].
1a,b,c; stage 6 of Bell and Rubenach,1983 classification) formed in response of N-S shortening, and (2) the latter phase is responsible for the formation of upright to isoclinal
folding with an axial planer NE-SW foliation falls in stage 2 to 3 of Bell and Rubenach (1983) scheme.
Structural analysis will determine the exact nature of the geology, though it is possible that the mineralisation outline defines an overturned isoclinal
synform with both limbs truncated by erosion below shallow surface cover.
The final isoclinal
structure of the Moravicum is given by a system of slices with steep an eastern vergency which is most intensive in the northern closure of the Dyje Dome to the north of the Cizov fault and mainly along the Moravosilesian fracture zone (Batik, 1999).
(The area is still seismically active.) The general structure of the deposit is a combination of recumbent and isoclinal
folds that have been deformed into open-style folds and cut by a system of parallel and transverse faults (Cilek, 1980).
Benedict (1945) recognized major isoclinal
overturned folds where previous interpretations had indicated a single, very thick, inclined sequence.
This sequence has experienced repeated deformation producing low grade meta-morphism of the rocks, isoclinal
folding and several phases of shearing.
This main slate cleavage almost obliterates an older cleavage associated to scarce folds with isoclinal
A single traverse of eight drill holes at Murphy South, combined with Stage I drilling and geophysical inversion modelling, suggests that a large body of magnetite gneiss occurs in this area as a large overturned isoclinal
fold, with a south southeast dipping axial plane.
Asymmetry is a typical feature of such elevations--steep, fault boundaries on the strike-slip zone side and isoclinal
(oroclinal) outer ones, and a characteristic triangular outline.
folding has been exposed in underground workings and the walls of open-pits.