Geologi/ <>/ the Barinon about Inverleigh. 293 



l)()Uiul;iry between the basalt and the tertiary inhers to the 

 north, which have never been covered by the flows. From 

 PoUocksfoi'd to the junction of tlie Moorabool at Fyansford the 

 river marks the geological boundary between basalt to the north, 

 and the Jurassic sandstones and other rocks, forming the 

 Barrabool Hills, to the south. 



Messrs. Dennant and Mulder have described the marine 

 tertiary and associated beds of the Leigh in the paper quoted 

 above, and have recognized about 8helford the occurrence of two 

 sets of marine beds belonging to what they called eocene and 

 miocene, and which we have suggested should be nauied 

 Balcombian and Kalimnan. From a. short distance above Bhelford 

 down to Inverleigh the left bank of the Leigh is bordered by a 

 sandy plateau. The sands are in places cemented by iron oxide 

 in their upper parts, and are succeeded in depth by slightly more 

 argillaceous beds. On the opposite bank of the valley the upper 

 beds have yielded Kalimnan fossils, and the lower ones Balcombian, 

 and it seems probable that the same state of things should prevail 

 on the left side of the valley, and that both sets of l)eds should 

 be present, but the hill slopes are grass-covered for the most part 

 and no Kalinnian fossils have been found as far as we are aware. 

 The lower beds, where exposed, have yielded Balcombian forms ; 

 the most southerly, recorded by Messrs. Dennant and Mulder, 

 being at "Farrell's" (Section 44, Parish of Carrah). AVherever 

 the beds are exposed near river level, from here to Inverleigh, 

 Balcombian fossils ma,y be found, and were it not that Kalinnian 

 species are yielded abundantly neai- Shelford, no hesitation would 

 be felt in describing the whole inlier as ' Balcombian. The 

 prcjbability, however, is, as already indicated by Messrs. Dennant 

 and ]\Iulder, that there is a Kalinnian cover. On the eastern side 

 of this area, wliere the Shelford road drojjs down into the Native 

 Hut Creek Valley, the beds are very ferruginous, and we spent 

 some hours .searching in vain for fossils. Nor did we And any 

 evidence one way or the other along the laisli track from Teesdale 

 to Shelford, while the deep road cutting, leading fnmi the plateau 

 to the Leigh Bridge higher up the valley than Inverleigh, was 

 equally barren of result. We are, however, of the opinion, as 

 already stated, that the superficial portion of the series should be 

 regarded as Kalimnan, though fossil evidence is wanting. 



