Map Collections in Geology Library

Topographic maps - United States

What is a topographic map and what are the different scales?  Descriptions and examples from the US Geological Survey.

Topographic Map Symbols - booklet from the US Geological Survey

15 minute quadrangle

These are filed alphabetically by state and quadrangle name in the drawers in the northwest corner of the Geology Library Main Reading Room. Cataloged in OSCAR

7.5 minute quadrangle

These are filed alphabetically by state and quadrangle name in cabinets in the Geology Library Map Room.  Indexes are located at the Circulation Desk in the Geology Library.  Quadrange names can also be found using the Geographic Names Information System (GNIS)

Ohio 7.5 minute quadrangle maps are filed in the map drawers in the northeast area of the Geology Library Main Reading Room and are cataloged in OSCAR.

1:250,000 maps- United States

Divided into two sets, Eastern and Western states, file by quadrangle name.
Eastern states are G3700 s250.U5
Western states are G4051.c18 s250 .U55.

30 X 60 Minute Series (1:100,000) maps

Filed alphabetically by map name.

1:1,000,000 (AMS series) maps

Filed alphabetically by map name in the map cabinets along the south wall of the Geology Library Serial Room.

 

Geologic Maps - Locations in the Geology Library


Ask a Library Staff member for help - geologic maps are in various locations - we will help you look.

Locations for cataloged maps:
GEO Map Room - Folded Maps: book shelving in the Map Room
GEO Map Rm - Folio Case: Folio shelving in the Map Room
GEO Map Rm - Flat Maps: There are three sets of drawers with cataloged maps:  The two nearest the ramp and one set in the Map Room Annex.
GEO Map Rm - Rolled Maps: these are in tubes in the racks on top of the map cabinets
GEO Atlas Stand: In Geology Library Main Reading Room
GEO CD Cabinet: Room 180B
GEO Reading Rm - Maps: the drawers beside the steps to the second floor