UN TlIK OCCURRExVCE OF THE CiKNLS eaüANTOl'TJJlIS IX KullEA. 3 



band from noi'tli to south and tlicii to cast, hccomes closely 

 hemmed in on both sides by liigh elills composed of an 

 alternation of hard slate, sandstone and conglomerate. After 

 crossing the stream at this point, the road then follows 

 the right bank for about two miles down to a village called 

 Uon-dong.^^ The ford goes by the name of Kai-youl,"'^ and this is 

 the locality where the plant fossils in question were found (fig. 1). 

 I believe, Nvith Prof. Koto, that it is almost certain that 

 this is the very place in which Dr. Gottsche himself once 

 sought for plant fossils ; for it is mentioned by him as lying " 20 

 li suedlich von Mun-gyong ". 



In striking contrast to the Jurassic Naktong series, the 

 Mun-gyong series, as I call it, is steeply inclined, showing at 

 Kai-youl an inclination of about 70°-50° northwestward. The 

 predominating rocks are black slate, dark gray sandstone and 

 conglomerate, often merging into one another. The conglomerate 

 was confounded by Dr. Gottsche with that of the Naktong 

 series ; but the resemblance of the slate to that of the upper 

 part of the Kyong-syang formation is still more striking. Besides 

 these rocks, the Mun-gyong series seems to contain limestone 

 and green phyllitic tuff in some places ; the limestone contains, 

 according to Mr. K. Inouye,''^ some obscure organic remains. 

 The chiastolite slate and crystalline limestone with tremolite, 

 exposed immediately south of Mun-gyong, are in all probability 

 rocks of this series, metamorphosed by tlu^ contact action of a 

 granitic rock exposed near by ; this chiastolite slate was included 

 by Dr. Gottsche in his Phyllite group."*^ 



i) um 



2) i^m 



3) Inouye: Geology and Mineral Kesources of Korea. 11)07. p. 27. 



4) GüTT.scJit;: I.e., p. 9. 



