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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

Iron Ore Mines

High Pressure

Average Number of Tornado Incidences per Year (U.S.)

Wheat Production

Major Karst Regions

Iron Ore Mines

High Pressure

Less than 1

1–5

6–10

11–15

More than 15

Class

Rank

Metric tons

Alabama
6.35%69.5%16.4%14.0%322.35e+5
Alaska
99.8%500.00
Alberta
4.20%21.13e+7
Arizona
6.12%92.2%7.76%302.61e+5
Arkansas
17.2%87.2%12.8%332.16e+5
British Columbia
12.52%381.11e+5
California
199.9%312.44e+5
Colorado
69.4%30.6%179.73e+5
Connecticut
99.9%550.00
Delaware
99.2%371.12e+5
District of Columbia
100%530.00
Florida
42.1%64.2%35.5%490.00
Georgia
38.3%61.5%38.5%351.58e+5
Hawaii
92.1%630.00
Idaho
0.527%100%82.55e+6
Illinois
16.2%70.3%29.6%141.20e+6
Indiana
33.8%62.9%37.1%245.29e+5
Iowa
0.441%50.0%50.0%570.00
Kansas
2.31%68.1%31.5%46.65e+6
Kentucky
7.06%4.42%60.5%35.1%198.16e+5
Louisiana
30.4%69.5%580.00
Maine
1.04%40.0%59.8%560.00
Manitoba
13.2%54.76e+6
Maryland
0.239%99.3%273.61e+5
Massachusetts
99.5%480.00
Michigan
8.03%1334.8%64.8%189.37e+5
Minnesota
16.9%1423.4%72.5%4.03%102.01e+6
Mississippi
5.48%10.9%74.0%15.1%391.06e+5
Missouri
0.407%123.4%62.5%14.1%216.70e+5
Montana
100%73.79e+6
Nebraska
5.07%88.6%11.4%207.14e+5
Nevada
4.77%100%540.00
New Brunswick
7.07%451.34e+4
New Hampshire
1.24%98.7%620.00
New Jersey
19.5%80.3%434.19e+4
New Mexico
29.5%90.2%9.71%443.93e+4
New York
1.63%161.6%38.3%341.96e+5
Newfoundland and Labrador
9.36%1610.00
North Carolina
13.2%99.9%236.53e+5
North Dakota
18.3%29.5%70.5%38.16e+6
Northwest Territories
1.44%1590.00
Nova Scotia
45.5%461.25e+4
Nunavut
3.79%640.00
Ohio
3.97%96.0%161.00e+6
Oklahoma
4.68%3.41%35.1%46.0%15.5%121.87e+6
Ontario
5.81%92.40e+6
Oregon
100%131.33e+6
Pennsylvania
14.8%6.15%93.9%264.17e+5
Prince Edward Island
417.45e+4
Québec
2.89%11283.47e+5
Rhode Island
99.3%470.00
Saskatchewan
11.48e+7
South Carolina
99.9%361.55e+5
South Dakota
22.1%76.0%1.85%111.95e+6
Tennessee
4.04%41.3%58.7%226.66e+5
Texas
0.625%16.8%43.9%36.9%2.38%151.06e+6
Utah
16.5%1100%408.62e+4
Vermont
77.1%22.6%600.00
Virginia
17.5%10.3%89.6%292.78e+5
Washington
99.9%63.92e+6
West Virginia
27.1%48.2%51.8%510.00
Wisconsin
31.1%213.1%53.1%33.7%255.09e+5
Wyoming
4.22%87.7%12.3%424.40e+4
Yukon
2.27%520.00
0.16.0