Publication Citation

USGS Series IMAP
Report Number 1420(NL-18)
Title Quaternary geologic map of the Ottawa 4 degrees x 6 degrees quadrangle, United States and Canada
Edition Version 1.1 Online Only
Language ENGLISH
Author(s) Compiled by Fullerton, David S.; compiled by Gadd, N. R.; Veillette, J. J.; Fullerton, David S.; Wagner, P. W.; Chapman, W. F.
Year 1993
Originating office
USGS Library Call Number M(200) I no.1420(NL-18)
Physical description 1 map :col.; 45 x 48 cm., on sheet 80 x 143 cm., folded in envelope 30 x 24 cm.
ISBN
Northernmost latitude 0480000
Southernmost latitude 0440000
Easternmost longitude -0720000
Westernmost longitude -0780000

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Abstract

The Quaternary Geologic Map of the Ottawa 4 degree x 6 degree Quadrangle was mapped as part of the Quaternary Geologic Atlas of the United States. The atlas was begun as an effort to depict the areal distribution of surficial geologic deposits and other materials that accumulated or formed during the past 2+ million years, the period that includes all activities of the human species. These materials are at the surface of the earth. They make up the 'ground' on which we walk, the 'dirt' in which we dig foundations, and the 'soil' in which we grow crops. Most of our human activity is related in one way or another to these surface materials that are referred to collectively by many geologists as regolith, the mantle of fragmental and generally unconsolidated material that overlies the bedrock foundation of the continent. The maps were compiled at 1:1,000,000 scale.