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Yellow background with block diagram showing surface and subsurface land use conditions with text reading title and other pub information
GLGMC Open FIle Report 99-349_Page_01.jpg
GLGMC Open FIle Report 99-349_Page_01.jpg
Yellow background with block diagram showing surface and subsurface land use conditions with text reading title and other pub information

GLGMC Open FIle Report 99-349_Page_01.jpg

GLGMC Open FIle Report 99-349_Page_01.jpg

Cover page for the USGS Open File Report 99-349. Read the original report here: https://www.usgs.gov/publications/mapping-glacial-geology-central-great…

By
Geology, Energy, and Minerals Mission Area, National Cooperative Geologic Mapping Program
Yellow background with block diagram showing surface and subsurface land use conditions with text reading title and other pub information

GLGMC Open FIle Report 99-349_Page_01.jpg

GLGMC Open FIle Report 99-349_Page_01.jpg

Cover page for the USGS Open File Report 99-349. Read the original report here: https://www.usgs.gov/publications/mapping-glacial-geology-central-great…

By
Geology, Energy, and Minerals Mission Area, National Cooperative Geologic Mapping Program
Block diagram showing generalized rock layers underground with a bare brown sandy/silty surface with a river and ice sheet depicting a generalization of an ice age glacial land surface. Surrounding the block diagram are text boxes explaining parts of the diagram.
Central Great Lakes Geologic Mapping Coalition (1999): USGS Circular 1190 glacial block diagram showing generalized ice age conditions
Central Great Lakes Geologic Mapping Coalition (1999): USGS Circular 1190 glacial block diagram showing generalized ice age conditions
Block diagram showing generalized rock layers underground with a bare brown sandy/silty surface with a river and ice sheet depicting a generalization of an ice age glacial land surface. Surrounding the block diagram are text boxes explaining parts of the diagram.

Central Great Lakes Geologic Mapping Coalition (1999): USGS Circular 1190 glacial block diagram showing generalized ice age conditions

Central Great Lakes Geologic Mapping Coalition (1999): USGS Circular 1190 glacial block diagram showing generalized ice age conditions

During invasions of the ice sheets (about 10,000 to 1,800,000 years ago), the glacial landscape of the Central Great Lakes region was a foreboding and barren place. In this scene, melting along the front edge of the continental ice sheet feeds water and sediment into a river and glacial lake.

By
Core Science Systems Mission Area, National Cooperative Geologic Mapping Program
Block diagram showing generalized rock layers underground with a bare brown sandy/silty surface with a river and ice sheet depicting a generalization of an ice age glacial land surface. Surrounding the block diagram are text boxes explaining parts of the diagram.

Central Great Lakes Geologic Mapping Coalition (1999): USGS Circular 1190 glacial block diagram showing generalized ice age conditions

Central Great Lakes Geologic Mapping Coalition (1999): USGS Circular 1190 glacial block diagram showing generalized ice age conditions

During invasions of the ice sheets (about 10,000 to 1,800,000 years ago), the glacial landscape of the Central Great Lakes region was a foreboding and barren place. In this scene, melting along the front edge of the continental ice sheet feeds water and sediment into a river and glacial lake.

By
Core Science Systems Mission Area, National Cooperative Geologic Mapping Program
Yellow background with block diagram showing present-day surface and subsurface conditions/land use with text reading title and other information.
USGS Circular 1190-150_Page_01.jpg
USGS Circular 1190-150_Page_01.jpg
Yellow background with block diagram showing present-day surface and subsurface conditions/land use with text reading title and other information.

USGS Circular 1190-150_Page_01.jpg

USGS Circular 1190-150_Page_01.jpg

This is the cover page of USGS Circular 1190. View the publication here: https://pubs.usgs.gov/circ/c1190/

By
Geology, Energy, and Minerals Mission Area, National Cooperative Geologic Mapping Program
Yellow background with block diagram showing present-day surface and subsurface conditions/land use with text reading title and other information.

USGS Circular 1190-150_Page_01.jpg

USGS Circular 1190-150_Page_01.jpg

This is the cover page of USGS Circular 1190. View the publication here: https://pubs.usgs.gov/circ/c1190/

By
Geology, Energy, and Minerals Mission Area, National Cooperative Geologic Mapping Program
1974 Geologic Map of the United States.
1974 Geologic Map of the United States.
1974 Geologic Map of the United States.
1974 Geologic Map of the United States.

1974 Geologic Map of the United States.

1974 Geologic Map of the United States.

King and Beikman's 1974 Geologic Map of the United States (1974 Geologic Map of the United States)

By
National Cooperative Geologic Mapping Program
1974 Geologic Map of the United States.

1974 Geologic Map of the United States.

1974 Geologic Map of the United States.

King and Beikman's 1974 Geologic Map of the United States (1974 Geologic Map of the United States)

By
National Cooperative Geologic Mapping Program
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