Basaltic dyke at Bingie Bingie Point

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This is one of the many basaltic dykes at Bingie Bingie Point. The dykes are commonly split into two or mare ‘arms’ as is the case in this model. The other point of interest is the contorted margin near the position of the compass, aith a lobate margin for the host tonalite seen to be intruding back into the dyke. This sort of feature is common on the headland and implies that the host tonalite was not completely solid at the time of basalt dyke intrusion. Compass is horizontal, points north, and is 12 cm in length.