[Proc. Eot. Soc. Victoria, 18 (N.S.), Pt. I., 1905]. 



Art. I. — On a Palaeozoic Serpentine Conglomerate, 

 North Gippsland. 



By E. O. THIELE. 



(With Plate I.). 

 [Eead 9tli March, 1905]. 



The conglomerate under consideration belongs to a serpentine 

 belt and associated series uf basic igneous rocks of undetermined 

 area. It is situated in the parish of Dolodrook, county of 

 Wonnangatta, about 7 or 8 miles in a straight line west from 

 Mt. Wellington. The country is rough and precipitous, so that 

 the very short time available for examining the occurrence did 

 not 23ermit of any attempt being made to trace the boundaries of 

 the serpentine and igneous rocks. This series of rocks, however, 

 apparently forms a belt of no great width, and stretches 

 south-eastei'ly from a point about a mile-and-a-half south-east of 

 the junction of the Wellington River with a stream v^^hich it is 

 proposed to name tlie Dolodrook River. This tributary enters on 

 the left bank of the main stream, but is unfortunately locally 

 known as the Right Branch of the Wellington. Mr. R. A. F. 

 Murray, in his report on the " Geology of South-East Gipps- 

 land,"^ mentions the fact that he was unable to investigate the 

 area immediately to the west of Mt. Wellington, but that it was 

 nearly certain to afford geological features of interest, as he had 

 heard of the occurrence of serpentine from that district, and that 

 the sample of chrome iron ore mentioned in Pi'ogress Report, 

 No. III., p. 172, came from the same place. The rocks of the 

 greater part of the Mt. Wellington district consist of coarse red 

 to chocolate coloured conglomerates, sandstones, finer shales and 

 a varied series of igneous rocks forming an extensive Upper 

 Palaeozoic belt, extending north-westerly across the Main Divide 

 to Mansfield. 



1 Progress Keport, No. V., Geol. Surv. Vic, p. 57. 



