BY H. I. JENSEN. 85 



and Mr. Martyn, of Cooran, informs me that a continuation of it 

 is found on the Woondum Tableland; and other similar boulder 

 patches occur, he says, in the direction of Belli Creek. This 

 would seem to prove that, prior to the faulting, the drainage of 

 Woondum took this course into Belli Creek and the North 

 Maroochy. 



(iii.) General Geology. 



(a) The Metamorphic Series. — Gregory, in his " Report on the 

 Geology of Parts of the Districts of Wide Bay and Burnett " 

 (1875), considered all the older rocks in areas I am dealing with 

 to be of Devonian age. Jack considered them to be identical 

 with the rocks of the Gympie Goldfield, hence Carboniferous. 



The phyllites and slates in the Mt. Mee region are apparently 

 conformable to one another, and the former gradually pass into the 

 latter in the vicinity of granite or diorite intrusions. The slates 

 are evidently derived from the soft phyllites (schists) by metamor- 

 phism, through intense heat and vapour-action depending on 

 igneous intrusions. My observations in this respect agree with 

 those of Mr. Rands in his " Report to accompany a Geological 

 Map of the City of Brisbane and its Environs" (1877). The 

 slates and phyllites are probably of Gympie age. Traversing the 

 phyllites in Wararba, on Mt. Mee and at Leacy's Creek, &c, 

 dykes, sills or interbedded sheets of greenstone are common. 

 These are probably the rocks that Gregory took for serpentine. 

 They are epidiorites in composition, and represent altered 

 gabbroic or basaltic rocks. 



In the Delaney's Creek Valley and in Fife's Range, there are 

 found mica schists, granulites, highly metamorphic slates and 

 gneisses, abounding in rare minerals like rutile, cyanite, sillima- 

 nite and zoisite. These rocks have a very ancient appearance. 

 Dr. W. G. Woolnough, of the Sydney University, considers them 

 comparable only to the oldest Archaean schists of South Australia 

 in nature and facies. They must be at least as old as Devonian, 

 and certainly have no resemblance to the Gympie series. These 

 rocks are cut by dykes of gneiss, greenstone, granite, pegmatite 



