190 



6. Maitland. The township of Maitlancl is built on a 

 floor of Pre-Cambrian rocks. Granite is seen in a shallow 

 road-cutting on the eastern side of the township, but is 

 masked at a slightly higher elevation by recent sediments. 

 Two Government bores supply the following sections : — 



(a) On the west park lands of the township the bore 

 penetrated clay, limestone, and indurated sandy clay to a 

 depth of 51 feet, when the granite was entered. 



(b) Maitland "No. 1 Bore," situated at the north- 

 eastern corner of Section 72, \\ miles west of Maitland, 

 passed through Recent and Cambrian beds to a depth of 199 

 feet before the granite was reached. 



7. Torke Valley, Eastern Ridr/e. About 14 miles west 

 of Ardrossan and 2 miles east of Maitland, a low ridge, 

 forming the eastern boundary of Yorke Valley, runs for 

 many miles in a north and south direction. This ridge was 

 examined on both sides of the main east and west road. 

 Going in a northerly direction, by way of Sections 287 and 

 219, for about 2 miles, mostly over cultivated land, low out- 

 crops and stony patches of the Pre-Cambrian rocks were 

 observed, including pegmatite, graphic granite, felspathic, 

 and schistose rocks. From the inconspicuousness of the out- 

 crops the lie of the beds could not be very definitely deter- 

 mined, but the strike is apparently north arid south, and the 

 dip, averaging about 80°, is sometimes east and sometimes west. 

 On the same side of the ridge, but at a lower level, a well 

 was being sunk at the time of my visit in Mr. Wundersitz's 

 yard (Section 214), which showed the following section: — 

 Clay, 25 feet ; decomposing mica-schist, 10 feet. This well is 

 situated only slightly below a capping of Cambrian basal 

 grits. 



Retracing one's steps to the main road, the ridge was 

 examined on the southern side of that boundary, through 

 Section 212. Granite rocks were seen in patches as far as 

 observations were carried out in that direction, and were 

 of similar types to those seen on the northern side of the 

 main road. From reports of the local residents this eastern 

 ridge of the Yorke Valley carries outcrops of the granitic 

 and metamorphic rocks for many miles. 



8. Yorke Valley, Western Ridge. The main south road, 

 between Maitland and Yorketown, passes along the Yorke 

 Valley. On the western side of this road there is a low ridge, 

 or scarp, corresponding to that on its eastern side. There 

 is a greater cover of Cambrian rocks on the western ridge 

 than on the eastern, but about 5 miles to the southward 

 of Maitland, in Section 19e, an outcrop of granite was noted. 

 The rock occurs in situ as well as in spheroidal lumps and 



