108 



nearly, if not wholly, the fundamental rocks of the entire 

 area. 



On directing attention to the various outliers in situ, I shall 

 commence at the south end of the district, pointing out the 

 situations and characteristics of those occupying the higher 

 tracts as we proceed north, afterwards indicating the relation 

 of three patches found in situ on the western base of the 

 range. 



Beginning, then, on the south, part of Section 4233 is 

 occupied with Upland Tertiaries ; from that point northerly 

 these beds continue to overlay the fundamental rocks in 

 part of Sections 4195, 4196, 4232, 4201, and 4230, in which 

 section the superficial area increases considerably, at the same 

 time trending to the east, occupies about one-half of Section 

 4193, part of 4231, 4362, and about four-fifths of 4363. 

 "With exception of the depression or channel of Little Garden 

 Creek, the series passes as a whole into Para Wirra, occupying 

 from 80 to 100 acres in Sections 6381, 6382 in that hundred. 

 I may note, in passing that at the junction of the diagonal 

 roads leading through Section 4363, the watershed of Little 

 Garden and Gould's Creek is situate at an elevation of about 

 700 feet. 



From the lowest point in the south-east corner of Section 

 4357 the beds continue to occupy the rising ground to the north 

 into Section 4156, where they attain an altitude of something 

 over 890 feet. From this elevation they gradually thin off, until 

 in a small valley from 150 to 200 yards north, the old rocks for 

 a distance of nearly half a mile are completely stripped of their 

 Miocene covering. In this little valley, according to the Bail- 

 way Survey Department, the elevation is 872 feet. Passing 

 north, in Sections 4676, 3263, 3262, 3266, and 3267, they 

 attain their former development, occupying in the aggregate 

 about 150 acres. In Section 3262, where the cross section 

 accompanying this paper intersects the roadway leading 

 through same, the elevation is 960 feet ; from which point, as 

 we approach Yatalunga, a small outlier of the series occurs on 

 the highway at the northern boundaries of Sections 3260 and 

 3267. Prom thence the old rocks are entirely stripped of the 

 newer series for a distance of about one and a quarter miles, 

 where a few characteristic fragments are to be seen in Section 

 4191. And lastly, at an elevation of 978 feet, the Gawler 

 Town hill is capped with Upland Miocene, identical in all 

 respects with the deposits of the same horizon at lower levels. 

 These beds are distributed not only over the higher tracts of 

 the district, but also repose at low elevations on the western 

 slopes of the range. An inlier surrounded by drift occupies 

 the bed of the creek in Section 3328 ; and two small outliers 



