Letter to Taylor from Leverett, March 10, 1915

Item — Box: 2, Folder: 8

Staff Only

Scope and Contents

From the Series:

The correspondence series includes approximately 1100 letters written between 1892-1939. The majority of the collection are letters between Frank Leverett and Frank Bursley Taylor; they discuss their field work, Monograph 53, other publications and various related problems. There is also other correspondence with other geologists, including T.C. Chamberlin, Grove K. Gilbert, J.W. Goldthwait, H.L. Fairchild, et alia. There is extensive correspondence with the U.S. Geological Survey, the Geological Survey of Canada, and the Michigan Geological Survey. The primary subject of this series is the surficial glacial geology of the midwestern U.S. and Canada. Leverett & Taylor's work was essential for understanding how the Great Lakes were formed as the Pleistocene glaciers advanced and retreated from the midwestern states. The letters describe the 30 year process of gathering data, mapping the data and constructing the picture of glacial processes during the last Ice Age.

Dates

Creation: March 10, 1915

Conditions Governing Access

The collection is open for research.

Conditions Governing Access

The material is stored offsite in Remote Storage. Please contact Special Collections 3 working days in advance if you wish to use it.

Extent

From the Collection: 1 Linear Feet

Language of Materials

English

Additional Description

General

I am sending you a map of NW Minnesota with 50' contour lines to show the limits of Lake Agassiz. It shows the way several beaches rise to the NNE. I have inserted data on altitudes and isobases for Campbell beach at 1120' and for the highest Herman beach in east part of Agassiz at 1300'. I think this is really the 2nd Herman beach, and the 1st terminates SW of Red Lake at Gully. I think the rapid rise of the 1st Herman beach from Fertile to Gully at 2'/mile is ice attraction. Ice attraction also seems to make the bar W of Red Lake a little higher than the isobases for the high stages of the Lake would indicate. To the E of Red Lake near Inez(?) the beach is barely more than 1250-1255' while the bar that runs through Inez (?) is 12270', not 1255'. The ice did not leave well defined moraines W of Red Lake, but i think the ice stood for a time along the N side of the Clearwater River from near Neptune to Terrebonne, then turning from westerly to southerlywith bend of River near Plummer. Earlier it stood S of Lost River and affected water levels near Gully. One of the great difficulties in this area is the vagueness of ice border features here. I have put on the map two pencil lines that show my present opinion on the ice margin, but further study may change them. We hope to have you and Mrs. Taylor here for the Academy meeting. Mrs L. and I today celebrate our joint birthday.