Big PictureThe geological stratigraphy in the region of the Link Catharine property, from west to east, is the Pacaud Assemblage Complex, Wabewawa Formation, Gabbro, Wabewawa Formation, Boston Creek Komatiites, Formation A-A', Mesima Komatiites and Formation A-A' again.
Garland, now take a look at the Total Field Magnetic Map in the Oban/K8aranda report, Page 22.
Take the magnetic map and turn it 90 degrees anti-clockwise, so you are looking at the magnetic trends like they would have been in their original flat-lying position, before they were tilted to the east on their side and eroded.
From the bottom (west), the magnetic trend (from another magnetic map), is related to the sulphidic facies iron formation in the Pacaud Assemblage Complex. The Wabewawa Formation has essentially a very low magnetic background, except for the circular magnetic high near the east boundary of the Link Catharine property. Then you have the long, positive magnetic anomaly of the Boston Creek Komatiites. The next long, positive trend to the east is the Mesima Komatiites. The Formation A-A' is essentially non-magnetic.
One thing that stands out is the disruption in the middle of the Boston Creek Komatiite trend. It has dropped about 300 metres near the area of rupture. It's almost like a tree branch being snapped, not completely broken off, and just left hanging there. If you noticed the other magnetic trends, there were no obvious displacements in them, suggesting no fault related movements. So how did the Boston Creek Komatiites move, while the other nearby trends did not? My theory is that at the time of the rupture, there were no rocks above the Boston Creek Komatiites. Perhaps the latter was heavy enough, and hot enough, to encourage the lower Wabewawa Formation to soften, so that portion near the ruptured Boston Creek Komatiites dropped, or slumped into the Wabewawa Formation. Was there something deeper, maybe near or within the Link Catharine property, that could have caused this rupture in the first place? Perhaps!!