Laurentian upland



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PHYSIOGRAPHIC REGIONS OF THE LOWER 48 UNITED STATES

LAURENTIAN UPLAND

  1. Superior Upland

ATLANTIC PLAIN

  1. Continental Shelf (not on map)

  2. Coastal Plain

    1. Embayed section

    2. Sea Island section

    3. Floridian section

    4. East Gulf Coastal Plain

    5. Mississippi Alluvial Plain

    6. West Gulf Coastal Plain

APPALACHIAN HIGHLANDS

  1. Piedmont province

    1. Piedmont Upland

    2. Piedmont Lowlands

  2. Blue Ridge province

    1. Northern section

    2. Southern section

  3. Valley and Ridge province

    1. Tennessee section

    2. Middle section

    3. Hudson Valley

  4. St. Lawrence Valley

    1. Champlain section

    2. Northern section (not on map)

  5. Appalachian Plateaus province

    1. Mohawk section

    2. Catskill section

    3. Southern New York section

    4. Allegheny Mountain section

    5. Kanawha section

    6. Cumberland Plateau section

    7. Cumberland Mountain section

  6. New England Province

    1. Seaboard Lowland section

    2. New England Upland section

    3. White Mountain section

    4. Green Mountain section

    5. Taconic section

  7. Adirondack province




INTERIOR PLAINS

  1. Interior Low Plateaus

    1. Highland Rim section

    2. Lexington Plain

    3. Nashville Basin

  2. Central Lowland

    1. Eastern Lake section

    2. Western Lake section

    3. Wisconsin Driftless section

    4. Till Plains

    5. Dissected Till Plains

    6. Osage Plains

  3. Great Plains province

    1. Missouri Plateau, glaciated

    2. Missouri Plateau, unglaciated

    3. Black Hills

    4. High Plains

    5. Plains Border

    6. Colorado Piedmont

    7. Raton section

    8. Pecos Valley

    9. Edwards Plateau

    10. Central Texas section




INTERIOR HIGHLANDS

  1. Ozark Plateaus

    1. Springfield-Salem plateaus

    2. Boston "Mountains"

  2. Ouachita province

    1. Arkansas Valley

    2. Ouachita Mountains

ROCKY MOUNTAIN SYSTEM

  1. Southern Rocky Mountains

  2. Wyoming Basin

  3. Middle Rocky Mountains

  4. Northern Rocky Mountains

INTERMONTANE PLATEAUS

  1. Columbia Plateau

    1. Walla Walla Plateau

    2. Blue Mountain section

    3. Payette section

    4. Snake River Plain

    5. Harney section

  2. Colorado Plateaus

    1. High Plateaus of Utah

    2. Uinta Basin

    3. Canyon Lands

    4. Navajo section

    5. Grand Canyon section

    6. Datil section

  3. Basin and Range province

    1. Great Basin

    2. Sonoran Desert

    3. Salton Trough

    4. Mexican Highland

    5. Sacramento section

PACIFIC MOUNTAIN SYSTEM

  1. Cascade-Sierra Mountains

    1. Northern Cascade Mountains

    2. Middle Cascade Mountains

    3. Southern Cascade Mountains

    4. Sierra Nevada

  2. Pacific Border province

    1. Puget Trough

    2. Olympic Mountains

    3. Oregon Coast Range

    4. Klamath Mountains

    5. California Trough

    6. California Coast Ranges

    7. Los Angeles Ranges

  3. Lower California province




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