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The Appalachian Mountains formed through a series of mountain-building events over the last 1.2 billion years: [ 4][ 5] The Grenville orogeny began 1250 million years ago (Ma) and lasted for 270 million years. The Taconic orogeny began 450 Ma and lasted for 10 million years. The Acadian orogeny began 375 Ma and lasted 50 million years.
Museum of Appalachia. The Museum of Appalachia, located in Norris, Tennessee, 20 miles (32 km) north of Knoxville, is a living history museum that interprets the pioneer and early 20th-century period of the Southern Appalachian region of the United States. Recently named an Affiliate of the Smithsonian Institution, the museum is a collection of ...
Ridge-and-Valley Appalachians. The Ridge-and-Valley Appalachians, also called the Ridge and Valley Province or the Valley and Ridge Appalachians, are a physiographic province of the larger Appalachian Highlands division. The physiographic province is divided into three sections: the Hudson Valley, the Central, and the Tennessee.
The shape of the reconstructed fort was based largely on the formations uncovered in these excavations, [1] and its design was based on contemporary Appalachian frontier forts, which typically consisted of log structures (some with overhanging second stories) and a stockade of sharpened poles surrounding a 1-acre (0.40 ha) courtyard. [12]
The Appalachian Mountains, [ b] often called the Appalachians, are a mountain range in eastern to northeastern North America. The term "Appalachian" refers to several different regions associated with the mountain range, and its surrounding terrain. The general definition used is one followed by the United States Geological Survey and the ...
The log structure was made at least 476,000 years ago, while the wood tools are slightly younger, under 400,000 years old. That places the materials in a time before our species, Homo sapiens ...
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