418 Journal of the Asiatic Society of Bengal. |NS., XIV, 
But if we are mapping a bed whose outcrop runs ob- 
liquely to the ancient coast-line, then we should observe, as 
we do in fact, this change horizontally from marine to fluvia- 
tile and earthy facies. Each bed changes laterally from a 
marine to a red earth bed. When then we happen to map 
a boundary oblique to the ancient coast-line, and when our 
boundary happens to be a red-earth band, I think it some- 
rests on one of shallow water marine facies. 
I suggest then that the overlap observed in the south 
of the Minbu anticline by Dr. Bleck is really to be explaing” 
as the mapping as one horizon of red earth bed-ends whic 
are of different horizons. I have visited this area myself, ané 
See no objection to this hypothesis. 
earth beds indicate land conditions and geo Z : 
: 0 
is assumed, an interruption of sedimentation. ew os 
conformity” cannot, in my opinion, be applied generally 
the Pegu-Irrawaddy boundary, except in this sense of 
idences of Recent Upheaval.—Evidences of recent og a 
al are many in the Irrawaddy valley. The Plateau Gravels are 
++ 300 
of the Irrawadd sides ss etc., at a height? 
ft. or more abov ‘ ier en mip ieee Similarly on either sifé 
of the Yaw River in Pakokku, boulders and grave beds a 
have come from some area near the head of the | 
"iver, but this is quite uncertain. 
: Pascoe : op. cit., p. 53. 
See Rec. Geol. Sur. Ind., Vol. XLII, p. 13. 
