IQ NOTES ON MT. ANXK AND THE WEI.U niVEH VALLEY. 



most remarkable mountain features in Tasmania, and the 

 Messrs. Giblin appropriately named it "Lot's Wife." To 

 the north of this spur is a very considerable precipitous 

 walled cii-que, in which lies a large bush encircled lake, not 

 far from the Weld River. 



South of Mt. Anne runs a long, rugged, but compara- 

 tively low quartzite plateau deeply dissected by gorges and 

 occupying most of the country between Mt. Anne, Mt. Weld, 

 and the Huon. It is separated from Mt. Anne by a deep, 

 narrow, but flat-bottomed valley drained on the west by 

 a stream flowing into Lake Edgar in the Huon Plains, in 

 the centre by the Anne River, into which Lake Judd drains, 

 and on the east by a considerable tributary of the Weld 

 which has been named "Judd's Reward Claim Creek" from 

 an old claim situated on its bank. 



On the wall-like face of this plateau opposite Mt. Anne 

 can be seen one large and three smaller mountain tarns, 

 for the largest of which the name Smith's Tarn has been 

 suggested, after Mr. V. C. Smith, who, of our parties, first 

 saw it. The Anne River cuts through the plateau in a 

 deep gorge. The plateau extends eastward to Mt. Weld, 

 which eminence rises a thousand feet or more above it and 

 forms its eastern buttress on the edge of the Weld Valley. 

 Mt. Weld is over 4,000 feet in height and stretches for about 

 eight miles, a narrow flat-topped ridge, ending precipitously 

 at its northern end, and appearing an isolated peak when 

 viewed from the north. It descends on the east very steeply 

 to the Weld and on the west also steeply for a thousand feet 

 or so to the level of the quartzite plateau. On the south 

 its ridges reach to the Huon Valley. 



(b) Development of Present Topography. 



The present cycle of erosion in Tasmania dates froni 

 the time of the diabase intrusions, and it is difficult on the 

 evidence at present available to be certain of conditions 

 during the earlier ages. There is undoubtedly evidence of 

 an old peneplain, lying between the Weld and Huon Rivers, 

 formed in the Cambro-Ordovician strata prior to the diabase 

 intrusions, and probably during late Devonian or early Permo- 

 Carboniferous times. This peneplain is now much dissected 

 by fluviatile and glacial action, but looking south from Mt. 

 Anne the remarkable flat top of the quartzite plateau between 

 Mt. Anne and the Huon catches the eye at once. The fact 

 that the top of this stands at the same general level as the 

 top of the quartzite under Mt. Anne, under Mt. Weld, under 



