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Mexico City subsidence. Groundwater-related subsidence often results in major damage to urban areas. In Mexico City, the buildings interact with the settlement, and cause cracking, tilting, and other major damage. [7] In many places, large sinkholes open up, as well as surface cavities.
Mexico City is an example of a sinking city that is neither coastal nor low-lying. The city was originally constructed by the Aztecs above a large aquifer in the 1300s. Subsidence was originally caused by the loading of large Aztec and Spanish structures. The city grew rapidly during the nineteenth century, and with it, so did the demand for water.
Subsidence frequently causes major problems in karst terrains, where dissolution of limestone by fluid flow in the subsurface creates voids (i.e., caves).If the roof of a void becomes too weak, it can collapse and the overlying rock and earth will fall into the space, causing subsidence at the surface.
About 2,250 additional people in Wilmington will be exposed to high-tide flooding if subsidence continues at the same pace, the researchers found, with the value of homes exposed to flooding in ...
Virginia City Historic District is a National Historic Landmark District encompassing the former mining villages of Virginia City and Gold Hill, both in Storey County, as well as Dayton and Silver City, both to the south in adjacent Lyon County, Nevada, United States. Declared a National Historic Landmark in 1961, the district is one of only ...
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