AEQUINOCTIA, AN OLD PALEOZOIC CONTINENT 571 



et enfin la plaine recente du Salouen. ... Le Silurien, affecte de 

 plis, presente une 'grande variete de fades. '^^ The Silurian fossils 

 of the Northern Shan States have not yet been found in the above- 

 mentioned limestone series of the southern highland of the Shan 

 (Vol. Ill, Part I, p. 281). 



From Kun-long, crossing the high ranges in a northwest direc- 

 tion up to Bhamo on the Irawaddi, we reach the mountains of the 

 Siang-chan, which advance toward the north (p. 277). They 

 consist of gneiss and crystalline schists and, for a great part, of 

 granite (p. 277). On the west these mountains border on a zone of 

 Carboniferous strata (p. 277). Then, turning again to the north- 

 east, in the direction of Ta-li-fou, we recross the above-mentioned 

 mountains of old crystalline rocks, which extend nearly to the 

 Salwen in latitude about 25°N. Between this river and Young- 

 tchang-fou, Loczy found at Poupiao (latitude about 25°N.) the 

 Silurian beds, whereas more to the east (eastward of Young-tchang- 

 fou) he discovered Upper Carboniferous strata (pp. 276-77). This 

 folded Paleozoic zone is situated between the Salwen and the 

 Mekong (p. 276). East of the Mekong a broad zone of sandstone 

 presenting the facies of the Flysch leads to the range of the Tsang- 

 chan, consisting of crystalline schists. Next follows another sedi- 

 mentary zone, composed principally of Upper Carboniferous strata 

 which extend to the north, from Tali-fou to Batang (p. 276). 



We need not continue in details our travel to the north and east, 

 but we may limit ourselves to a few remarks. In the north the 

 Upper Carboniferous strata play a somewhat important part, 

 stretching themselves unconformably over older folded and denuded 

 series of the Lower Paleozoic. After their deposition, there fol- 

 lowed a new folding and, with regard to its tectonic history, this 

 territory offers a fair similarity to many other countries of Eurasia 

 (p. 276). Very far in the northeast of Central China, appear on 

 one side the gneiss and crystalline schists, and on the other the 

 oldest Paleozoic beds, all strongly pinched in successive mountain 

 ranges. In the west, Silurian and Devonian series predominate 

 (pp. 266-75); in the east, next to these, there are Cambrian strata 

 (pp. 294-95). In Central and Northern China these formations of 



' The italics are mine. 



