RE:Er....?
The geometry of vein based gold systems is primarily influenced by a combination of dynamic stress changes and fluid pressure variations.
For that reason, Orogenic gold deposits show a spatial relationship to structural discontinuities, including faults, fractures, dilatation zones and shear zones.
The ore- hosting structures are therefore subsidiary faults or shear zones which are always related to a major regional-scale deformation structures, such as lithospheric boundaries and suture zones.
Thats why the deformation structures hosting orogenic gold deposits are typically discordant with respect to the stratigraphic layering of the host rocks.
Got it ?
Ok
Now have your first class geologist calculate the Perkins Discontinuity
Index for Fosterville and then compare it with QWN.
Betcha you will be too embarrassed to present the results..