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National Cooperative Geologic Mapping Program

WHAT IS A GEOLOGIC MAP?

  Introduction
  History
 

Cartography & Geologic Maps

GIS and graphic design software have radically changed the techniques by which map information is published. Traditional film (peelcoat) technologies have been supplanted by digitally prepared negatives for offset printing of paper maps and by plot-on-demand approaches, which generate one map at a time upon request by users. Plot-on-demand is useful for producing customized, single-attribute maps (for example, showing only the shear strength of the geologic materials or the susceptibility of a groundwater supply to contamination). Digital cartographic techniques are evolving and becoming capable of producing sophisticated map layouts and products. It is anticipated that digital cartographers will be continually challenged to develop new techniques as software evolves and as geologists and users demand more complex and informative products.

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Related Information

Meeting Challenges with Geologic Maps
(8.1 Mb Adobe® PDF)

Overview of Geologic Maps

Geologic Mapping:
AASG Position Paper (1.9 Mb Adobe® PDF)

Hazards:
AASG Position Paper (1.3 Mb Adobe® PDF)

The Value of Geologic Mapping:
Geological Society of America Position Statement

Tapestry of Time and Terrain

Geologic Map of North America

Digital Mapping Techniques Proceedings

Geographic Information Systems


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