28 AKT. -3. — H. YABE. 



NOTES ON A FUSULINA-LIMESTONE 

 FROM KOREA. 



The discovery of a I^hsulina-limeBtoue in Korea is especially 

 noteworthy, as it proves the existence of Anthracolitic deposits 

 in more or less extension in a land geologically little known.^^ 



When I examined a slice of Korean limestone brought back 

 by Mr. N. Fukuchi, my attention was immediately attracted to 

 small foraminiferal remains which I took for a Fu.^ulina in a 

 state of very bad preservation ; but unfortunately other sections 

 of the same rock, since prepared, did not reveal any more reliable 

 forms. x\t my request, Mr. T. Iki of the Imperial Geological 

 Survey, very kindly paid a good deal of attention to the subject, 

 while inspecting mines in the peninsula, and brought back many 

 specimens of limestones which he placed at my disposal for ex- 

 amination. These limestones are all from the neighbourhood of 

 Phyong-yang."^ 



Our knowledge of the Fasulina-limesione and its associated 

 rocks in Korea is at present very imperfect ; an area along the 

 Tai-dong-gang^^ below Phyong-yang is coloured by Gottsche in 

 his geological map as Tertiary, while the surrounding region is 



1) In one of my former papers, Mesozoic Plants from Korea (Jonrn. Sei. Coll. Imp. 

 Univ. Tokyo, Vol. XX., No. 8, 1905), I proved the Mesozoic age of a thick complex, on 

 tlie evidence of a fossil flora, widely spread in a region including the greater part of the 

 Kyong-«yang-Do and a part of the Chhung-chiiyong-Do and Chol-la-Do. The plants found 

 in the slate whicli Gottsciik referred to the Carboniferous, on account of the occurrence 

 of his supposed Neuroplcrh in it, though not yet studied in detail, so far as my own 

 opinion is concerned, is probably of a Triassic age. Also there is some doubt about the oc- 

 currence of J'totZino-limestone in Korea mentioned by II. Ckednior (Elemente d. Geologic. 

 1897, p. 467) and G. Fltegkl (Zeitschrift d. deutsch geol. Gesell. Bd. L.) ; the original 

 paper if there be one, is not accessible to me. 



-') ^-m- -) Xnn. (Tai-dung-river). 



