IOWA ACADEMY OF SCIENCE 
253 
tributary to Clear Creek, about the central part of section 26, township 
80 north, range 7 west; the other lies in a tributary leading east from 
the lobe to Iowa River, about 1% miles east of the village of North 
Liberty. 
V alley -tra/in Material from the Shueyville Lobe. — From the Shuey- 
ville lobe, a tributary flows southeastward through the village of Shuey- 
ville, joining Hoosier Creek just above its junction with Iowa River. In 
this tributary on the south side, where crossed by a north-south road, 
in the northwest quarter of section 13, township 81 north, range 7 west, 
occurs a terrace that extends for about % mile, and is 20 feet high and 
50 to 100 yards broad. No good natural section shows the character of 
the material, but in a, side-wash and along the slopes sand is evident, 
suggesting that it is a sand terrace and that it probably has the same 
relation to the Shueyville lobe that the terrace in Pardieu Creek has to 
the North Liberty lobe. 
Along the north side of the ravine running parallel with the Cedar 
Rapids and Iowa City Interurban Railway from Swisher to Cou Falls, 
In Iowan territory, there is a bench-like feature averaging as much as 
30 feet above the present stream. Apparently it has lost some of its 
former distinctiveness by lateral dissection. In the excavations made 
by the Interurban, sands mixed with coarse gravel, and in places cross- 
bedded, are exposed. The material is the same in character as that in 
the Pardieu Creek terrace, and is probably of similar origin. 
Section in an Outw ash-like Plain. — Three or four miles west of Cou 
Falls, in the southwest quarter of section 19, township 81 north, range 7 
west, an intermittent creek has cut a vertical-walled channel 10 
feet deep into a very gently sloping area which resembles an outwash 
plain and leads up to some morainic-like hills of drift capped with 
loess. The materials are outwash and afford the following section : 
(3). Soil and clay, unstratified . . .2'-4' 
(2). Gravel parting, apparently residual 0'-3' 
(1). Sands, stratified in long lenses, yellow, medium- 
grained, arkose 2'-4' 
Terrace-like Feature at the Helman Sand-pit. — At the Helman sand- 
pit, situated on the north side of the bend of Iowai River just north of 
Iowa City and on the west side of the tributary that cuts the valley 
wall, is an exposure of silt, sand, and gravel, overlain by loess. The 
site resembles a, remnant of a terrace. On both sides of the tributary, 
particularly on the east, the summit is flat-topped for some little distance 
back to the higher land. The uniform elevation to the west for a quarter 
