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Table of Contents
Abstract
Introduction
Geography
Geology
Ground Water
Water Bearing Formations
Well Records
Well Logs
References
Plates
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Table 7
Table 7--Mechanical analyses of samples of loess collected at vertical intervals of 5 feet from Rock Island Railroad cut, SW 1/4 NW 1/4 sec. 8, T. 8 S., R. 35 W. By Ada Swineford and Carrie B. Thurber.
| Sample no. |
Mechanical analysis (percent by weight) |
| 1.0-0.5 mm |
0.5-0.25 mm |
0.25-0.125 mm |
0.125-0.062 mm |
0.062-0.031 mm |
0.031-0.0156 mm |
0.0156-0.0078 mm |
0.0078-0.0039 mm |
0.0039-0.00195 mm |
0.00195-0.00098 mm |
Less than 0.00098 mm |
| 7 |
0.8 |
2.9 |
3.4 |
9.3 |
52.3 |
17.1 |
4.8 |
3.8 |
1.4 |
1.1 |
2.9 |
| 6 |
0.1 |
0.8 |
2.1 |
6.0 |
61.9 |
15.1 |
5.5 |
4.0 |
1.4 |
1.0 |
2.1 |
| 5 |
0.1 |
0.4 |
7.0 |
4.1 |
46.3 |
30.6 |
6.8 |
4.7 |
1.8 |
1.2 |
3.3 |
| 4 |
0.2 |
1.1 |
1.7 |
7.4 |
64.3 |
15.3 |
4.1 |
2.3 |
1.0 |
0.6 |
2.0 |
| 3 |
|
0.2 |
0.4 |
6.1 |
57.6 |
22.1 |
5.7 |
3.7 |
1.1 |
1.0 |
2.1 |
| 2 |
|
0.5 |
0.9 |
5.1 |
54.7 |
23.5 |
6.1 |
4.2 |
1.2 |
1.0 |
2.8 |
| 1 |
|
|
0.3 |
5.0 |
64.2 |
18.5 |
4.2 |
3.1 |
1.2 |
1.0 |
2.4 |
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