43 



290-79 m - On lot 56 the limestone series is again seen 

 468 km. with an almost vertical attitude although 

 both northerly and southerly dips at high 

 angles are seen in the exposures. At one place 

 a small mass of gabbro, probably an apophysis 

 of the main mass to the south, is intruded into 

 the sedimentary rocks. 

 292-03 m. About lot 62 a mass of pyrrhotite about 30 

 470 km. feet (9-1 m.) in width is interstratified with 

 blue limestome and lighter coloured dolomite, 

 the whole series dipping to the south at a high 

 angle. 

 294-47 m - From lot 80 to lot 86 a fine-grained and 

 473-9 km. evenly foliated amphibolite occurs. From this 

 point to Murphy's Corners the limestones 

 and amphibolites are interstratified with one 

 another, dipping to the south at a high angle. 

 Owing to progressive metamorphism and con- 

 sequent recrystallization, the limestone has 

 lost much of its bluish-grey colour and some 

 bands are quite white. 



The fine-grained amphibolites and gneisses 

 which are interstratified with limestones repre- 

 sent either intercalations of muddy sediments 

 analogous to those forming the paragneisses in 

 the vicinity of Millbridge, or have originated 

 from the complete alteration of volcanic ashes 

 which fell into the sea during the deposition of 

 the limestones. Their chemical composition 

 affords very little distinctive information as to 

 their genesis, but their association with intru- 

 sions of gabbro, possibly truncated volcanic 

 centres, suggests a volcanic origin. 



298-22 m. Murphy's Corners. 



479-9 km. From Murphy's Corner's the road follows 

 the town line between Limerick and Tudor 

 until it reaches Bass lake. Thence it passes to 

 the west and north of this lake and joins the 

 railway at St. Ola station (Steenburg P.O.) 

 In this interval limestones, amphibolites and 

 rusty-weathering paragneisses interstratified 

 with one another are exposed. The limestone 

 is apparently relatively unimportant, but this 



