The North American Geological Tapestry of Time and Terrain

The Masterpiece of North American Earth Science

Explore the deep history of our continent with the North America Tapestry of Time and Terrain. This expansive 39" x 52" wall map is a collaborative triumph between the U.S. Geological Survey (USGS) and the Geological Survey of Canada. By combining detailed geologic age data with shaded-relief imagery, this map creates a stunning visual "tapestry" that reveals how ancient tectonic events have shaped the modern landscape.

A Scientific Visualization of Time & Rock

Unlike standard geologic maps, this "tapestry" uses a sophisticated color-coding system to represent the Geologic Time Scale:

• The Tapestry Effect: Shaded relief provides a 3D perspective of mountains, valleys, and plains, while superimposed colors indicate the age of the underlying rock.

• Rock Classification: Four specialized inset maps break down the continent by rock type: Sedimentary (yellow), Volcanic (red), Plutonic (blue), and Metamorphic (brown).

• Temporal Depth: From the ancient Precambrian shields (purple/pink) to the recent Quaternary deposits (yellow), the map traces over 4 billion years of North American history.

Professional Grade & Educational Utility

• Large-Format Detail: At 39 by 52 inches, this map offers unparalleled legibility for study or display.

• Academic Precision: Compiled by renowned geologists Kate E. Barton, David G. Howell, José F. Vigil, John C. Reed, Jr., and John O. Wheeler.

• Multilingual Reference: Features titles and legends in English, Spanish (Cobertura de Tiempo y Terrenos), and French (L’Amérique du Nord: un collage de terrains d’âges différents).
  

  Feature	Details
  Title	The North America Tapestry of Time and Terrain
  Publisher	U.S. Geological Survey (USGS) in collab with Geological Survey of Canada
  Dimensions	39 x 52 inches
  Primary Imagery	Geologic age combined with 3D shaded relief
  Rock Type Insets	Sedimentary, Volcanic, Plutonic, Metamorphic
  Time Scale	4 billion years (Precambrian to Quaternary)