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Examples
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The Interior Plateau (66c) is more than 1,000 feet (304 m) higher than the nearby Piedmont; crestal elevations are approximately 2,600 to 4,500 feet (792-1,372 m).
Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA) 2008
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It is often lower and less forested than the adjacent Glaciated Allegheny High Plateau (62c) and crestal elevations are typically 1,300 to 2,000 feet (396-610 m).
Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA) 2008
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These rocks are somewhat less resistant to erosion than those of the adjoining Northern Outer Piedmont (45f) and physiography reflects these differences; Ecoregion 45c has lower crestal elevations, greater valley widths, and more favorable sites for reservoirs than adjoining ecoregions (Hunt, 1967, p. 257).
Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA) 2008
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As a result, the crestal elevations of Ecoregion 62a, ranging from about 1,800 to 2,300 feet (549-701 m), are markedly higher than those of Ecoregion 62b, which range from about 1,300 to 1,500 feet (396-457 m).
Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA) 2008
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As a result, Ecoregion 62b is markedly lower in elevation than Ecoregion 62a; crestal elevations of Ecoregion 62b are about 1,300 to 1,500 feet (396-457 m) whereas those of Ecoregion 62a are 1,800 to 2,300 feet (549-701 m).
Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA) 2008
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Ecoregion 70 is a mostly unglaciated, dissected plateau with 200 to 750 feet (61-229 m) of local relief and crestal elevations of less than 2,000 feet (610 m).
Ecoregions of Delaware, Maryland, Pennsylvania, Virginia, and West Virginia (EPA) 2008
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Its lower crestal elevations, Alfisol soils, limestone bedrock, and sinkholes distinguish it from Ecoregion 70d; its ruggedness, lack of fragipans, and, often, natural vegetation differentiate it from the glaciated plains of Ecoregion 55d.
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Correlations with the previous Jacaranda Ridge #2 discovery indicate that Hollick 1 has intersected a crestal hydrocarbon equivalent in the Jacaranda Ridge Sandstone.
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The well will now be geologically sidetracked, as intended, to test the reservoir up-flank between this vertical bore and existing crestal wells to further investigate the quality of the reservoir and provide essential compositional information of the hydrocarbons at intermediate depths.
New Statesman New Statesman 2010
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The well will now be geologically sidetracked, as intended, to test the reservoir up-flank between this vertical bore and existing crestal wells to further investigate the quality of the reservoir and provide essential compositional information of the hydrocarbons at intermediate depths.
New Statesman New Statesman 2010
biocon commented on the word crestal
crestal = at, near, on, or pertaining to a crest (Merriam–Webster Unabridged Dictionary).
March 14, 2016