Supriya Ghosh (Editor)

Borchert's Epochs

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Borchert's epochs refer to five distinct periods in the history of American urbanization. Each epoch is characterized by the impact of a particular transport technology on the creation and differential rates of growth of American cities. This model was conceptualized by University of Minnesota geographer John R. Borchert in 1967. The five epochs identified by Borchert are:

  • Sail-Wagon Epoch (1790–1830), cities grow near ports and major waterways which are used for transportation;
  • Iron Horse Epoch (1830–70), characterized by impact of steam engine technology, and development of steamboats and regional railroad networks;
  • Steel Rail Epoch (1870–1920), dominated by the development of long haul railroads and a national railroad network;
  • Auto-Air-Amenity Epoch (1920–70), with growth in the gasoline combustion engine;
  • High-Technology Epoch (1970–Present Day), expansion in service and information sectors of the economy

    • Subsequent researchers (e.g., Phillips and Brunn) have proposed an extension of Borchert's model with new epochs to take into account late 20th-century developments in patterns of metropolitan growth and decline in the United States.

    References

    Borchert's Epochs Wikipedia
    (Text) CC BY-SA