JOURNEYS THROUGH KOREA. 



65 



Mr. Inouye, tlien, took a turn south to Yöng-am, located at 

 the foot of the well-known Uöl-chhi/ul-san ^^ (" Rising Moon 

 Mountain," 775 m), in the recesses of which are found many 

 Buddhist monasteries. The mountain is rugged, being builfc up 

 of masanite, with nearly equatorial trend. 



Tlie first half of the way lies on a hilly terrane of compressed 

 granite as far as the gold placer locality of Tong-c]ihang'^\ On 

 the south on the water-shed 



i s found a norma 1 p a r a g n e i s s 

 of true sedimentary origin 

 with a fine -sandy appearance 

 and a light -yellow color. It 

 is the Takanuki Gneiss — a 

 biotite- gneiss — of Japan and 

 is the oldest sediment in Korea. 

 It occurs in an elliptic patch 



1) n ^ \h 



'^) M M Tüug-cliliang lies about mid- 

 way on the meiidional road between Na-jyu 

 and Yong-am already mentioned (p. 51). 

 and is li km distant from the latter. The 

 auriferous region is a flat, meridional valley, 

 in which a stream (Im-chhyon :^ Jij) flows 

 northwards towards the Yöng-san-gang. The 

 placer is R km long in the river-bed, and at 

 present from two to three hundred men are 

 leisurely working the fluvial sand, but its 

 total out-put is unknown, or rather kept 

 secret for the interest of the undertaking. 

 The washing, on either side of the stream, 

 is confined to a strip some sixty feet wide, 

 measured from the river bank ; but it 

 woidd probably pay if it were extended still 

 further into the adjoining paddy fields, 

 The auriferous bed is 10 to 20 feet thick, 

 and the basal gravel bed, J to IJ feet 

 thick, is, as usual, rich in gold and the 

 grains being rather large. Inouye : Loc. cd. 



THE 

 TOm-CHHANa 

 7£"'G0LD-FIELD. 



ORTHOGNEISS 

 iQlWRIZTORPHyRir 

 PLACER 

 PUCER(DEAD) 



