1895,] 
Minor Time Divisions of the Ice Age. 
244 
great subaérial erosion because of the continuing high elevation 7 the land; and 
the latest or moraine-forming stage of the glaciation seems, 
n Europe a 
ali 
America, to have belonged to the mainly rapid but fluctuating ia retreat of a 
ice, showing, as I think, that each ice-sheet had in its lower part much englacial 
rift. 
a and Rikija of the Glacial period. 
(Land depres- 
sion; disap- | w,.consin st 
earance of (Progressing "reale- | 
the ice-sheet; ` yatio n.) 
partial reéle- 
vation of the 
IoWANSTAGE...... 
GLACIAL EPOCH 
Ice accumula- 
( 
INTERGLACIAL STAGE . 
eirogenic UP- | Kansaxstace ....- 
lift. ) 
TJNDETER MINED STAG 
of fluctuation in 
general eve 
| the ice-shee 
| CHAMPLAIN SUBSIDENCE j 
j gr ea parae a the land, advanc- 
as a perm ave from south to 
anden ga paprati retreat of the ice 
along most of its ie 
tion of prominent moraines; great gla- 
cial lakes on the northern borders of 
the States; slight glacial oscil- 
lations, with temperate climate nearl 
ow, at Toronto and Scarboro’, Ont. 
the sea finally admitted to the St. Law- 
s and Ottawa valleys ; 
epart 
e great Baltie glacier, and Euro 
pean marginal m es.) 
l 
forest beds and extending yerel 
to its early boun uro- 
pean glacial sta 
Extensive glacial recession in the upper 
art o ississippi basin ; cool tem- 
< 
perate climate and coniferous fereala up 
to the waning ice uch erosion 
| of the early drift. 
| Maximum extent of the ice-sheet in the- 
} interior of North America, and also. 
eastw in northe ew Jersey. 
(Maximum Ea = Europe. 
Including al recession and. 
reiidvance in the on of the Moose 
and Albany rivers. (First glacial stage- 
in the Alps.) 
