Geologic Map Of North America

Geologic map of north america

Geologic map of north america explanation author. Geologic units and processes are investigated on a large scale to reach a synthesized picture of the geological development of the continent. Usgs gsc woods hole gsa subject.

North America Geology David Rumsey Historical Map Collection

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Included in usgs ds 424 database of the geologic map of north america adapted from the map by j c. Check out the national geologic map database ngmdb which is the national archive of these maps and related geoscience reports. Laurentia is an ancient craton which forms the geologic core of north america.

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Geologic maps since the 1800s the usgs and its partners the state geological surveys have been producing high quality standardized geologic maps of the nation. The canadian shield is the largest exposure of this craton. The map is a portion of a larger world map created by the central intelligence agency using robinson projection.

Downloadable high resolution georeferenced images of the the geologic society of america s printed gmna map for viewing or using in a gis includes geologic unit explanation sheets.

It formed between 1 5 and 1 0 billion years ago during the proterozoic eon.
Geological survey the map above shows the ages of bedrock in north america from yellow youngest to green to blue to red oldest.
The geologic map of north america is a product of gsa s decade of north american geology dnag project.
Geologic maps of us states digital geologic maps of the us states with consistent lithology age gis database structure and format data for the district of columbia is included with maryland.

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The gmna resources site has the geospatial files map images publication documentation and informational resources. This is a political map of north america which shows the countries of north america along with capital cities major cities islands oceans seas and gulfs. And others 2004 by garrity and soller created date.

The geological society of america s gsa geologic map of north america reed and others 2005a.

You can also view the full pan and zoom cia world map as a pdf document.
The maps official name is the the north america tapestry of time and terrain.
A collection of geospatial files map images publication documentation and informational resources in support of the geologic map of north america.
From the late paleozoic to early mesozoic eras north america was joined with the other modern day continents as part of the supercontinent pangaea with eurasia to its east.

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Separate geologic maps are available for alaska hawaii and puerto rico. Downloadable high resolution images of gmna map sheets for viewing or using in a gis. Map created by u s.

Geologic Map Of North America Usgs Full Details High Resolution Images And The 32 Mb Legend At Https Ngmdb Usgs Gov Gmna Mapporn