1 l'_' I. <\ Kl'SSEM I'KFACl GEOLOGY O] VLASKA, 



tarkably fi material of any kind, except in the b ittoms <>f 



the valleys, when t-borne gravels, river terraces, and lacustral Biltsare 



abundant. 



It . ;n desirabli the glacial phenomena of this region 



in detail, since this would necessitate a repetition of whal has been recorded 

 in many other similar areas. Brief notic me of the most interesting 



ion, however, may not b< t of pla 



/< ' - G - ( »n the east side of Lake Leba 



tli, ious rai rounded limestone domes, known as the Han- 



k liill-. which have an approximate elevation <»t" si x or eight hundred feel 

 above the Ink-'. These hills have been intensely glaciated, especially on their 



i them sid< •-. Their 'them Blopes are broken and rugged, showing unmis- 



takably the directii f movement of the ancient ice sheet which remodeled 



their forms « >n tin- nearly vertical precipices overlooking the lake there 



locality, strongly drawn grooves, which ascend Blightly towards 



the north — that i-. in the rlirecti in of ice movement. The upward tending 



the lines amounts, perhaps, to two or three degn - The cause of their 



abnormal was a projection or shoulder on the face of the cliff, at right 



;in_ ral course and also at right angles to the direction of ice 



movement, which acted as a dam to the ice current and caused it to rise in 



• the obstruction. - Bel in the aide of the glacier moved 



with the ice and left a record of their course on the cliff against which they 



/ G /.' ■ >rds. — The Hancock hills are bare of debris, 



■hi:.' an nal perched bowlder, and, what is more important, are 



|i and smooth that they musl have been uncovered and exposed to the 



since the ice left them. The surfaces of vertical walls, and 



■ n the summits ■'!' the rounded d ■-. r-till retain the grooves and scratches 



made by tin- ancient glacier. The surface polish of the limestone has dis- 

 a|>!» an d from the ii I situations, but disintegration has n« »t pr 



i t'. obliterate, "i" even !>■ greatly obscure, the ice markinj 

 When nsider the severity of the climate i<< which these hills have 



of the glacial records upon them is signiGcant 



date of the glacial epoch. The rate at which the 



known to crumble and decay in temperate lati- 



tu tin more exposed portions of the Mam k hills 



ial markings more than a few hundred years. 

 Apparently I if the region al t Lake Lebarge occurred hun- 



I ll I v <• 



I hlli A iin Rep I 



