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The 322-acre (130 ha) state park has been operated by the Missouri Department of Natural Resources under a lease agreement with the L-A-D Foundation since 1984. [6] Grand Gulf was declared a National Natural Landmark in 1971 as an excellent example of karst topography and underground stream piracy . [ 7 ]
The two highest points in the state are Taum Sauk Mountain at 1,772 ft (540 m) in the St. Francois Mountains in Iron County and Lead Hill just east of the community of Cedar Gap at 1,744 ft (532 m) in the southwestern corner of Wright County. Few localities have an elevation exceeding 1,400 ft (430 m).
Between the two zones is the Missouri Gravity Low, or MGL, a mass of low density granite including the Missouri batholith up to 370 miles long and 60 miles wide, identified in gravity surveys. Igneous activity ended around 1.3 billion years ago, with the intrusion of numerous dikes and sills into newly crystallized rhyolite and granite.
The Elephant Rocks, for which Elephant Rocks State Park is named, is a pile of residual boulders of weathered Graniteville Granite. It is a medium- to coarse-grained, muscovite-biotite alkali granite that, on the average, consists of 55 percent alkali feldspar, 40 percent quartz, and less than 5 percent mafic minerals.
English: This is a locator map showing Sumter County in Alabama. For more information, see Commons:United States county locator maps. Date: 12 February 2006: Source:
The Noxubee River (NAHKS-uh-bee) is a tributary of the Tombigbee River, about 90.6 miles (145.8 km) long, in east-central Mississippi and west-central Alabama in the United States. [ 1 ] [ 2 ] [ 3 ] Via the Tombigbee, it is part of the watershed of the Mobile River , which flows to the Gulf of Mexico .
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A geologic map or geological map is a special-purpose map made to show various geological features. Rock units or geologic strata are shown by color or symbols. Bedding planes and structural features such as faults , folds , are shown with strike and dip or trend and plunge symbols which give three-dimensional orientations features.