Synopsis: First - In Warren County the drift is of uneven depth. As in other drift areas, this unevenness is not dependent entirely on the pre-glacial surface. In the unconformity of the drift on this pre-glacial surface a relation is seen indicating a similarity between the present drainage system and the pre-glacial drainage system. Second - The present river valleys and larger ravines are larger than present streams require. They fit into the pre-glacial valleys. Third - ln the smaller ravines only do we find erosion without regard to the pre-glacial configuration of the county
During the field season of 1917, the writer examined two exposures of stratified sands and gravels, ...
When a boy, living on the border between the Iowan and the Loess-Kansan drift sheets, the great diff...
The drainage system in southeastern Iowa is believed to be practically the same today that it was in...
Synopsis: First - In Warren County the drift is of uneven depth. As in other drift areas, this uneve...
Nature\u27s unfinished work in the Wisconsin drift areas of Iowa has left the lands peculiarly subje...
The drainage system on the Des Moines River is quite varied between Humboldt and Des Moines. The var...
It is well known that several systems of drainage lines have been impressed upon the surface of the ...
Author Institution: Department of Geology, Wright State UniversityA study of misfit streams and mean...
Previous workers have proposed a pre-Illinoian age for the deepest bedrock entrenchment of northeast...
There are at least two pre-glacial valleys in Lee County, which is situated in the extreme southeast...
The long period intervening between the deposit of the Cretaceous rocks of Iowa and the advent of th...
This study statistically compares certain morphometric characteristics of second order drainage basi...
Flood plains are said to exist along the courses of rivers where in time of flood deposits are laid ...
While inspecting some placer gold deposits in the Central Black Hills during the Spring of 1933, the...
During the past year a number of deep wells were sunk in Des Moines County. Some of them reached suc...
During the field season of 1917, the writer examined two exposures of stratified sands and gravels, ...
When a boy, living on the border between the Iowan and the Loess-Kansan drift sheets, the great diff...
The drainage system in southeastern Iowa is believed to be practically the same today that it was in...
Synopsis: First - In Warren County the drift is of uneven depth. As in other drift areas, this uneve...
Nature\u27s unfinished work in the Wisconsin drift areas of Iowa has left the lands peculiarly subje...
The drainage system on the Des Moines River is quite varied between Humboldt and Des Moines. The var...
It is well known that several systems of drainage lines have been impressed upon the surface of the ...
Author Institution: Department of Geology, Wright State UniversityA study of misfit streams and mean...
Previous workers have proposed a pre-Illinoian age for the deepest bedrock entrenchment of northeast...
There are at least two pre-glacial valleys in Lee County, which is situated in the extreme southeast...
The long period intervening between the deposit of the Cretaceous rocks of Iowa and the advent of th...
This study statistically compares certain morphometric characteristics of second order drainage basi...
Flood plains are said to exist along the courses of rivers where in time of flood deposits are laid ...
While inspecting some placer gold deposits in the Central Black Hills during the Spring of 1933, the...
During the past year a number of deep wells were sunk in Des Moines County. Some of them reached suc...
During the field season of 1917, the writer examined two exposures of stratified sands and gravels, ...
When a boy, living on the border between the Iowan and the Loess-Kansan drift sheets, the great diff...
The drainage system in southeastern Iowa is believed to be practically the same today that it was in...