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Major Karst Regions

WorldPhysical Environment

Major karst regions in the world

USGS

A map illustrates the major karst regions in the world.

Areas shaded in peach represent major karst regions worldwide. In North America, significant karst areas are found in northern and central Canada and the eastern and southwestern United States. In Central America, karst landscapes are prevalent, with notable areas in eastern Brazil. Europe features many karst regions, extending across North Africa from Algeria to Egypt and reaching south to Nigeria in the west and South Sudan in the east. Southern Africa also has prominent karst areas. In Southwest Asia, karst regions are widespread, as well as in Siberia and south-central China. New Guinea and eastern and southern Australia are also marked by significant karst landscapes.

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Major Karst Regions

Milk Cows

Major Territorial Acquisitions (U.S.)

Major Karst Regions

Class

Rank

Cows

Extent of U.S., 1803

Louisiana Purchase, 1803

West Florida, 1810–1813

British Cession, 1818

East Florida, 1819

Northern Maine, 1842

Texas Annexation, 1845

Oregon Country, 1846

Mexican Cession, 1848

Gadsden Purchase, 1853

Alaska, 1867

Hawaii, 1898

Alberta
4.20%2581000.0
Manitoba
13.2%3243600.0
New Brunswick
7.07%4215900.0
Newfoundland and Labrador
9.36%525100.00
Northwest Territories
1.44%630.00000
Nova Scotia
45.5%4021100.0
Nunavut
3.79%620.00000
Ontario
5.81%10326800
Prince Edward Island
4412700.0
Québec
2.89%9353000
Saskatchewan
3728800.0
Yukon
2.27%610.00000
Alaska
60200.00094.5%
Arizona
6.12%1619500076.2%23.8%
Utah
16.5%2292000.0100%
District of Columbia
97.6%
Florida
42.1%2392000.098.3%
Idaho
0.527%366100099.8%
New Hampshire
4510000.099.9%
Rhode Island
59500.00097.7%
Vermont
2111800099.9%
Washington
1225400099.4%
Wyoming
4.22%499000.0070.3%4.53%12.4%12.7%
Montana
4610000.082.4%17.6%
Maine
1.04%3925000.082.4%16.6%
North Dakota
18.3%4314000.057.6%42.4%
Kentucky
7.06%3145000.099.9%
Virginia
17.5%2867000.099.5%
Delaware
562600.0098.0%
Mississippi
5.48%516000.0092.2%7.44%
West Virginia
27.1%535000.00100%
Nebraska
5.07%3057000.0100%
Texas
0.625%465000099.5%
Missouri
0.407%2965000.099.7%
Louisiana
508000.0086.4%12.4%
Hawaii
58600.00091.5%
North Carolina
13.2%3539000.099.2%
Oregon
2012300099.8%
Alabama
6.35%572000.0095.7%4.16%
New Mexico
29.5%1127900057.5%40.3%2.23%
Kansas
2.31%1917500091.7%8.26%
Wisconsin
31.1%21.27000e+699.8%
British Columbia
2680500.01.43%
New Jersey
544100.0099.0%
South Carolina
489000.0099.6%
Michigan
8.03%843200099.9%
Connecticut
4118500.099.6%
Pennsylvania
14.8%6465000100%
Colorado
1520300041.3%32.3%26.4%
Nevada
4.77%3633000.099.9%
Massachusetts
479000.0098.1%
Georgia
38.3%2492000.099.8%
New York
1.63%563000099.4%
Maryland
0.239%3340000.096.9%
Oklahoma
4.68%3439000.091.6%8.45%
Tennessee
4.04%3826000.099.9%
California
11.72500e+699.7%
Arkansas
17.2%554000.0099.8%
South Dakota
1818700099.1%
Ohio
13250000100%
Indiana
33.8%17187000100%
Minnesota
16.9%745500033.8%45.1%20.9%
Iowa
0.441%1424000099.8%
Illinois
16.2%2779000.099.7%
0.16.0