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Carbonate Outcrops

WorldPhysical Environment

Locations of outcrops of carbonate rocks, primarily limestone and dolostone

USGS

A map illustrates the global distribution of carbonate rock outcrops, indicated by yellow dots across various continents.

In North America, outcrops are prevalent along the western coast, the southeastern United States, and parts of Mexico. Central America and the Caribbean also have notable concentrations, particularly in Costa Rica and Cuba. In South America, significant outcrops are found in Venezuela, Peru, Bolivia, Brazil, and Paraguay. Europe shows widespread outcrops, especially in France, Spain, Poland, and Ukraine, with additional dots in the United Kingdom and Sweden. Africa has notable outcrops in Morocco, Algeria, Nigeria, Cameroon, Gabon, the Democratic Republic of Congo, Angola, Zambia, Zimbabwe, and South Africa. In Asia, outcrops are concentrated in Turkey, Iran, Pakistan, India, Nepal, Sri Lanka, Myanmar, Vietnam, Cambodia, Malaysia, Indonesia, and the Philippines, with additional dots in China, Mongolia, and Russia. Southeast Asia has numerous outcrops, particularly in Indonesia. In Australia, outcrops are found along the eastern coast and in southern Australia, with additional dots in New Zealand.

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Carbonate Outcrops

Sea Ice Extent

Coastal Areas of Eutrophication and Hypoxia

Major Territorial Acquisitions (U.S.)

Carbonate Outcrops

Sea Ice Extent

Hypoxic

Eutrophic

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

Yukon
2
Northwest Territories
1
New Brunswick
1
Québec
5
Ontario
2
Nunavut
10.158%
Nova Scotia
2
Prince Edward Island
1.54%1
Newfoundland and Labrador
40.162%1
Alaska
3194.5%
Arizona
276.2%23.8%
Utah
6100%
District of Columbia
97.6%
Florida
431198.3%
Idaho
299.8%
New Hampshire
199.9%
Rhode Island
397.7%
Vermont
399.9%
Washington
47399.4%
Wyoming
70.3%4.53%12.4%12.7%
Montana
82.4%17.6%
Maine
3382.4%16.6%
North Dakota
57.6%42.4%
Kentucky
99.9%
Virginia
599.5%
Delaware
6198.0%
Mississippi
3192.2%7.44%
West Virginia
100%
Nebraska
100%
Texas
11299.5%
Missouri
99.7%
Louisiana
686.4%12.4%
Hawaii
91.5%
North Carolina
1599.2%
Oregon
8299.8%
Alabama
3195.7%4.16%
New Mexico
57.5%40.3%2.23%
Kansas
91.7%8.26%
Wisconsin
99.8%
British Columbia
51.43%
New Jersey
599.0%
South Carolina
1599.6%
Michigan
299.9%
Connecticut
299.6%
Pennsylvania
100%
Colorado
141.3%32.3%26.4%
Nevada
1599.9%
Massachusetts
398.1%
Georgia
5199.8%
New York
599.4%
Maryland
896.9%
Oklahoma
91.6%8.45%
Tennessee
99.9%
California
67299.7%
Arkansas
99.8%
South Dakota
99.1%
Ohio
100%
Indiana
100%
Minnesota
33.8%45.1%20.9%
Iowa
99.8%
Illinois
99.7%
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