JOÜBNEYS THROUGH KOREA, 45 



complex was undoubtedly a continuation of that observed at 

 Han-su-nal. We crossed the ferry and soon reached Nam- 

 haîioi ^' on the same formation ; but at the latter place para- 

 gneiss and quartzite reappeared from the bottom of the green 

 beds, the former continued to Kol-nam-j ijanc) -\ From the last 

 village were seen Chyön-ji-hong on the north-east and the hat- 

 shaped Kat-hahol-san'''^ on the east, both being built up of the 

 green rocks separated by an equatorial valley of paragneiss due 

 either to faulting or erosion. To the west the green rock moun- 

 tain was seen trending north-west by west, but how far the 

 formation extended to the west I could not tell. Green pebbles 

 of white-spotted porphyrite were the principal stones in the 

 river bed. 



Farther southwards the topography became close and the 

 cliffs on both sides were built up of the greenish fusion-tuff or 

 friction-breccia with intercalation of green porphyrite ; the former 

 prevails from Peuk-chhang *'' to Sol-chhi^^ via Yang-su-chy'6ng^\ 

 slightly dipping (3^) southwards. The defile from Peak-chhang to 

 Yang-su-chi/öng is the tuff formation, sometimes columnar ; and 

 the stratification- plane and jointed character produce a series of 

 falls and rapids. 



The top of the Sol-schhi pass (PI. VI. ßgs. 2 and 3) is a 

 woody orthogneiss (the stretching axis N. W. — S.E.), capped by a 

 red tufaceous formation with spots of plagioclase and quartz, 

 dipping northwards. At the foot of the south descent the woody 

 orthogneiss passes into the Hadong gneiss, keeping the same 



abundantly present. The grayish mass consists of mimite grains, displaying aggregate polari- 

 zation colours. An important porphyritic component is the decj)ly corroded quartz which be- 

 speaks some genetic relations with the tuffs and breccias to be mentioned later. See also ante, 

 p. 19, footnote. 



1) m m 2) J)| Tic ^ 3) 2£ M Uj 4) ;jl: # 5) ta lllf G) M 7l^ ^ 



