128 



of dip, on account of the cleavage and fissility which the 

 rocks display. In one case the planes of dip and fissility 

 slope westerly, and that of the cleavage easterly, all at high 

 angles. 



At four and a half miles south of Callington the road 

 to Mount Barker leaves the Strathalbyn road and turns 

 west, so that the strike of the bed is once more crossed. Con- 

 siderable variety is seen amongst the schists, including white 

 and grey friable muscovite schists, and very tough, black 

 biotite schists. In all these beds the dip is generally a little 

 south of east, at angles varying from 65 deg. to as little 

 as 32 deg. 



On the west these pass into white quartzites, which, 

 however, make nothing like so strong a feature as the Mount 

 Barker mass. These quartzites in colour and texture are 

 more like a rock from Tanunda ^^) (given me by my colleague, 

 Mr. Howchin) than any other I have met with in South 

 Australia. 



This lithological resemblance is not an accident, but is a 

 very important clue (see p. 131). 



West of the quartzite band, and about a mile east of 

 the little hamlet of Morning Starj^"*) a very strong outcrop of 

 paringite occurs ; this lies between the occurrences at 

 Mount Barker and at Gemmel's Station. Just west of the 

 village is a strong development of marble. It is very coarse 

 in grain, and has all the appearance of the Angaston marble 

 (see also p. 131). From the marble quarry to Mount Bar- 

 ker town there is very little conspicuous outcrop of rock. 

 The soil suggests much soft black schist, and I have noted 

 ''ferruginous slate." It is probable that this is really the very 

 persistent and important band of purplish "soapstone," which 

 will be described later. I failed to recognize it at the time. 



Between Mount Barker town and Echunga there is a 

 series of mottled purplish schists, interspersed with thin- 

 bedded quartzites, which give rise to a very pronounced fea- 

 ture. There is plentiful evidence of heavy earth movement 

 in this area, and it appears to be a definite shatter-zone. 

 West of the quartzite belt we meet with soft schists, in 

 which appear spots suggestive of development of incipient 

 andalusite crystals. These continue to the town of Echunga. 



(3) Trans. Roy. See, S.A., vol. xxviii. (1904), p. 203. 



(4) I am a little uncertain as to exact distaiices at this part 

 of my journey, as my pencil notes are very indistinct. It is 

 possible that the hamlet is Wistow,, and not Morning Star. The 

 outcrop of paringite shown on the map may be a good deal 

 out of place. 



