GLACIAL SUCCESSION IN CENTKAL LUNENBUEG PREST. 163 



2nd. In spite of its extreme hardness, it has been denuded 

 to a greater extent than any other such wide-spread deposit in 

 the region under consideration. The only places where it can 

 now be seen being along the valley of the Lahave, and along 

 the watershed to the east. 



3rd. Since its deposition over highland and lowland alike, 

 and in the pre-glacial valley of the Lahave, that river has been 

 re-excavated and the conglomerate left only in a few isolated 

 patches along its banks. And this has taken place before the 

 depositions of lowest kames and boulder clay. 



4th. It debris has been formed into kames which are in 

 turn older than the boulder clay that covers them. 



oth. It is more intensely oxidized than any other deposit 

 in the southwestern counties ; so much so, that some parts of it 

 constitute almost pure bog iron ore. In no more striking 

 manner can its immense relative antiquity be illustrated than by 

 comparing its highly oxidized condition with that of the over- 

 lying till. While the later boulder clay is oxidized only a few 

 feet in depth, this earlier deposit is oxidized and cemented 

 throughout a depth of at least 20 feet. Even beneath the 

 Rhodenizer Lake kame it is just as highly oxidized as elsewhere, 

 although over 30 feet, and formerly 60 feet, of stratified beds 

 covered it. 



Extent. It seems to have formerly masked a large part of 

 the province, since it is found at widely separated points, as 

 Bridgewater ; Greenfield, Queens County ; Maitland, Lunenburg 

 County ; and the Grove, Richmond, which is within the limits 

 of the City of Halifax. The depth to which it covered the 

 country was no doubt considerable, as it is found in the Lahave 

 valley from the sea level to 200 feet above it. 



Origin. That this deposit is not pre-glacial or inter-glacial, 

 its unstratified condition decides. That it is'glacial the presence 

 of striated boulders testifies with no little weight. That it is of 

 northern origin is proved by the contents, w r hich consist of slate 

 from near by, quartzite from the north-west, granite from the 



