Filters: Tags: Porter County, Indiana (X)
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Coral, as an indicator of past environments, is especially useful in determining past sea levels. Some types of corals, such as brain coral, must live close to the surface. As the sea level rises with the melting of the ice sheets, the corals must grow upward to survive. If the age of the corals can be determined, the past rate of sea level rise can be estimated. As the ice sheets melted rapidly during the latest ice age, sea levels rose at a rate of 8 feet in 100 years. Page 6, U.S. Geological Survey Circular 1085.
Categories: Image;
Tags: Hill, C.L. Collection,
Photo color print,
Photographers,
Porter County, Indiana
Indiana Dunes National Lakeshore, Indiana. Storms with high winds and waves create steep narrow beaches, like this one where winter storms are frequent and especially destructive. Page 28 (bottom left), U.S. Geological Survey Circular 1085.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Indiana Dunes National Lakeshore,
National Parks,
Photo color print,
Photographers,
Porter County, Indiana
Indiana Dunes National Lakeshore, Indiana. Wetlands are commonly adjacent to dunes. Page 22 (bottom right), U.S. Geological Survey Circular 1085.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Grosz, A. Collection,
Indiana Dunes National Lakeshore,
National parks,
Photo color print,
Photographers,
Indiana Dunes National Lakeshore, Indiana. The unique environment of the Indiana Dunes supports a large variety of animals, such as opossums. Page 19 (bottom left), U.S. Geological Survey Circular 1085.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Indiana Dunes National Lakeshore,
National parks,
Photo color print,
Photographers,
Porter County, Indiana
Indiana Dunes National Lakeshore, Indiana. The unique environment of the Indiana Dunes supports a large variety of vegetation, such as the white trillium. Page 18 (left), U.S. Geological Survey Circular 1085.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Indiana Dunes National Lakeshore,
National parks,
Photo color print,
Photographers,
Pitcher, E Collection,
Indiana Dunes National Lakeshore, Indiana. The unique environment of the Indiana Dunes supports a large variety of animals, such as turtles. Page 19 (center left), U.S. Geological Survey Circular 1085.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Indiana Dunes National Lakeshore,
National Parks,
National parks,
North, G. Collection,
Photo color print,
Indiana Dunes National Lakeshore, Indiana. Fragmentation of park land by urban areas, such this highway, can create islands of natural ecosystems and can disrupt the natural movement of plants and animals. Page 16 (bottom left), U.S. Geological Survey Circular 1085.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Indiana Dunes National Lakeshore,
National parks,
Photo color print,
Photographers,
Porter County, Indiana
Indiana Dunes National Lakeshore, Indiana. This color infrared aerial photograph shows a major part of the lakeshore. Vegetation is shown in red. Page 13 (top), U.S. Geological Survey Circular 1085.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: EROS,
Indiana Dunes National Lakeshore,
National parks,
Photo color print,
Photographers,
Indiana Dunes National Lakeshore, Indiana. The unique environment of the Indiana Dunes supports a large variety of animals, such as Canada geese. Page 19 (top), U.S. Geological Survey Circular 1085.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Indiana Dunes National Lakeshore,
National parks,
Photographers,
Porter County, Indiana,
photo print
Indiana Dunes National Lakeshore, Indiana. The unique environment of the Indiana Dunes supports a large variety of animals, such as six-lined racerunners (lizard). Page 19 (center right), U.S. Geological Survey Circular 1085.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Indiana Dunes National Lakeshore,
National parks,
Photo color print,
Photographers,
Porter County, Indiana
Wetlands are an important nesting site for birds. Circa 1990. Page 22 (top photo), U.S. Geological Survey Circular 1085.
Categories: Image;
Tags: Indiana Dunes National Lakeshore,
National parks,
Photo color print,
Photographers,
Porter County, Indiana
Indiana Dunes National Lakeshore, Indiana. Park ranger helping children. Page VI (top right), U.S. Geological Survey Circular 1085.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Indiana Dunes National Lakeshore,
National parks,
Photographers,
Porter County, Indiana,
photo color print
Indiana Dunes National Lakeshore, Indiana. Wind-blown sand encroaching on the forest. Page VI (bottom right), U.S. Geological Survey Circular 1085.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Daum, B. Collection,
Indiana Dunes National Lakeshore,
National parks,
Photographers,
Porter County, Indiana,
Indiana Dunes National Lakeshore, Indiana. The unique environment of the Indiana Dunes supports a large variety of vegetation, such as the prickly pear cactus. Page 18 (right), U.S. Geological Survey Circular 1085.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Daum, B. Collection,
Indiana Dunes National Lakeshore,
National parks,
Photo color print,
Photographers,
Indiana Dunes National Lakeshore, Indiana. The forest changes as it approaches the shore line. Portion of page VI (center), U.S. Geological Survey Circular 1085.
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Daum, B. Collection,
Indiana Dunes National Lakeshore,
National parks,
Photographers,
Porter County, Indiana,
Album caption: Forest at Indiana Dune National Lakeshore, Indiana. Published as picture at top left on page VI in the U.S. Geological Survey Circular 1085 (1991).
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Daum, B. Collection,
Indiana Dunes National Lakeshore,
National parks,
Photographers,
Porter County, Indiana,
Indiana Dunes National Lakeshore, Indiana. The unique environment of the Indiana Dunes supports a large variety of animals, such as raccoons. Page 19 (bottom right), U.S. Geological Survey Circular 1085. 1991
Categories: Image;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Indiana Dunes National Lakeshore,
National Parks,
National parks,
Photo color print,
Photographers,
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