1903-4. ] A Forty-MILE SECTION OF PLEISTOCENE DEPosITS. 15 
textured stratified clays. These clays rest upon a narrow band of 
boulder till. Beneath this till sheet, which will be termed the second 
till sheet, are a second belt of stratified cross-bedded sands. Judging 
from the topographic expression of the cliff front, the till of the first or 
lowest sheet probably also occurs here above lake level. The second 
_ or middle till sheet extends along the shore for a little over a mile; and 
appears in Sections 3 and 4. At Section 5 it has disappeared; appar- 
ently both it and the underlying sand deposits were eroded before the 
arenaceous till of the third sheet was deposited, because the third 
sheet rests unconformably upon them. 
What is regarded as the continuation of this second till sheet is again 
found about a quarter of a mile west of Section 8, there being an in- 
terval of a little over two miles between the exposures. The sheet with 
the stratified sands exposed both above and below it, may be traced 
westward for two miles, or to within a little less than two miles of New- 
castle. The eastern part of this second sheet has a maximum thickness 
of twelve feet, as shown in Sections 3 and 4. The sheet reaches its 
maximum thickness of twenty-five feet a little to the east of Section 
g. West of Section 9 the thickness gradually diminishes to about eight 
feet at Section 12. A little to the west of this the sheet apparently 
ends and the arenaceous till is found to rest upon cross-bedded sands 
(with thin beds of gravel), which are continuous with those beneath 
the second till sheet further east. 
Half a mile east of Newcastle, midway between Sections 15 and 16, 
the cliff presents the following section in ascending order from present 
lake level :— 
Wipper) part /substratified\sa5-.245. . oaccde te By 
Wippern taller te. | F 5 
Lower part; mMassiveds (aac) 5200s) falta hclesces 26’ 8” 
|| etigae ) argillaceous sands............. “| 
Stratified Sands 4 Sand free from clay...................002- ey 2 enn ae 
| Laminated argillaceous sands ............ Ph teh 
Mecca SiS ra vetey cy cio aia at fas stale Wiars alates Sats orale tsretiacslat tee etoile 10; 
Merde rap DeaGh tye erase sate Sates she ale eratys Ont aaah letters alee et oeete SiOr 
39’ 9” 
The surface of the lowest till sheet which here shows above the lake 
level is gently undulating, and a few yards west of where the above 
section was taken it rises to six feet above lake level, while the thickness 
of the upper sheet has diminished. 
The lowest till sheet lies below water level at Section 4 and at Sec- 
tion 7. At Sections 5 and 6 there is reason to believe that it is present 
