342 LA TOUCHE : GEOLOGY OF NORTHERN SHAN STATES. 



Immediately beyond this the railway crosses the cart-road, and 

 at the crossing the red Namvau beds appear 



NamyanbeT^"' 0 * f ° r the first time > di PP in S n0rth at aWlt 45 

 degrees. They are highly weathered and 



friable in the cuttings along the line between this point and the 



railway bridge, and contain no fossils. Across the river to the 



north they are found at the base of a vertical scarp of the Plateau 



Limestone, which marks the line of a fault 



running along the north side of the Nam-Tu 



valley, which we now enter upon. The salt wells of Bawgyo 



are situated on the fault, at the foot of the scarp about half a 



mile to the north of the station. 



Beyond the railway bridge the line enters upon a wide alluvial 



plain, after passing through a cutting in 

 Nam-Tu valley. r i , ° ° ' ° . 



one of the via boulder terraces deposited m 



recent times by the Namhsim or Nam-Tu, and runs across this 



plain to Hsipaw. Nothing of special interest is to be seen in the 



immediate neighbourhood of the town, except the boulder terraces ; 



but at Ta-ti ferry (Loe. 7, F 2), 6 miles to the north-east, one 



of the limestone bands near the base of the Namyau series is to be 



seen, containing large numbers of Rkynchonella. The outcrop is 



on the left bank of the river, about a mile above the ferry, at 



the mouth of a picturesque gorge from which the Nam-Tu issues. 



The conglomerate band at the base of the series is also visible in 



the banks of the river below the limestone. Another of these 



bands of limestone may be reached from Hsipaw, by following the 



river down to Bawgyo, where it crops out on the left bank directly 



opposite to the village. The rock here yields numbers of Terebratula 



as well as Rkynchonella. 



From Hsipaw also an excursion may be made to the village of 



Panghsa-pye, lying 7 miles to the north-west 

 Excursion to Panghsa- (about 1Q mileg by ^ rQad); Qn ^ way ^ 



Nam-Hsan, the capital of the Tawng-peng 

 State. At Panghsa-pye the Llandovery graptolite band at the top of 

 the Naungkangyi beds, and its relations to the rocks above and be- 

 low, may be studied. The road runs northwards over the Hsipaw 

 plain for two or three miles, and then passes over an old boulder 

 terrace to Na-kio, where it enters a valley in the Plateau Lime- 

 stone. This continue? as far as Pangmaklang, where it is succeeded 



