Add to ORKGThis map shows the positions of the margin, of the recessional stages and of the substages respectively of the Wisconsin ice sheet in Iowa where these positions have been determined. The outer boundary shown is taken chiefly from the maps of the Iowa Experiment Station and of the U.S. Soil Survey. The margin of the Altamont moraine is taken principally from the maps by the Iowa Geological Survey
From the angle of genesis we lately have to modify some of our ideas on our Glacial till-sheets. Rea...
This paper is the result of an attempt to determine, if possible, the relation of the Wisconsin drif...
The region considered in this paper is a small area lying to the south and southeast of Sioux Falls,...
The principal moraine of this Wisconsin group in Iowa extends from the northeastern corner of Winneb...
The Humboldt stages, like the Algona stages consist of a series of recessional moraines some of whic...
The city of Algona is the best known locality near the maximum southern extent of these recessional ...
The several major and many more minor recessional moraines are discussed with respect to their locat...
A definite moraine extends southeastward across the southwestern township of Butler County to centra...
Immediately following the time that the Altamont moraine was formed there was an intermittent retrea...
During the past year the writer has found some time to continue his investigations of the Iowan and ...
The bedrock surface beneath the Des Moines Lobe Drift Sheet in Iowa contains the junction of the pal...
It is commonly understood that the Raccoon River, where it flows through Des Moines, lies just south...
When a boy, living on the border between the Iowan and the Loess-Kansan drift sheets, the great diff...
McGhee, in the map accompanying his Pleistocene History of Northeastern Iowa, makes the Upper Till ...
The gravels related to the Iowan glaciation of northeastern Iowa have been studied in the field and ...
From the angle of genesis we lately have to modify some of our ideas on our Glacial till-sheets. Rea...
This paper is the result of an attempt to determine, if possible, the relation of the Wisconsin drif...
The region considered in this paper is a small area lying to the south and southeast of Sioux Falls,...
The principal moraine of this Wisconsin group in Iowa extends from the northeastern corner of Winneb...
The Humboldt stages, like the Algona stages consist of a series of recessional moraines some of whic...
The city of Algona is the best known locality near the maximum southern extent of these recessional ...
The several major and many more minor recessional moraines are discussed with respect to their locat...
A definite moraine extends southeastward across the southwestern township of Butler County to centra...
Immediately following the time that the Altamont moraine was formed there was an intermittent retrea...
During the past year the writer has found some time to continue his investigations of the Iowan and ...
The bedrock surface beneath the Des Moines Lobe Drift Sheet in Iowa contains the junction of the pal...
It is commonly understood that the Raccoon River, where it flows through Des Moines, lies just south...
When a boy, living on the border between the Iowan and the Loess-Kansan drift sheets, the great diff...
McGhee, in the map accompanying his Pleistocene History of Northeastern Iowa, makes the Upper Till ...
The gravels related to the Iowan glaciation of northeastern Iowa have been studied in the field and ...
From the angle of genesis we lately have to modify some of our ideas on our Glacial till-sheets. Rea...
This paper is the result of an attempt to determine, if possible, the relation of the Wisconsin drif...
The region considered in this paper is a small area lying to the south and southeast of Sioux Falls,...