A sinkhole, also known as a cenote, sink, sink-hole, shakehole, swallet, swallow hole, or doline (the different terms for sinkholes are often used interchangeably), is a depression or hole in the ground caused by some form of collapse of the surface layer. Most are caused by karst processes—for example, the chemical dissolution of carbonate rocks or suffosion processes. Sinkholes vary in size from 1 to 600 m (3.3 to 2,000 ft) both in diameter and depth, and vary in form from soil-lined bowls to bedrock-edged chasms. Sinkholes may form gradually or suddenly, and are found worldwide.
Human activities, such as underground mining, can also form sinkholes. On 2/28/2013, a sinkhole suddenly developed under the house outside of Tampa, Florida, leading to the tragic death of its occupant, Jeff Bush.
In the Philippines, carbonate rocks occupy a large portion of the natural landscape, comprising about 1,171 municipalities. Some of the places in the country that are prone to sinkholes are the provinces of Bohol and Cebu, Rizal province's municipality of Tanay, Pangasinan province's Hundred Islands, and the chartered city of Baguio.
Text content copied from:
Wikipedia article Sinkhole
https://en.wikipedia.org/wiki/Sinkhole
Windows To The Universe article Earth
http://www.windows2universe.org/earth/earth.html
Mines and Geosciences Bureau of the Philippines article MGB Embarks On Subsistence Susceptibility Assessment
http://www.mgb.gov.ph/2015-05-13-02-02-11/mgb-news/80-mgb-embarks-on-subsistence-susceptibility-assessment
Some changes were made.
See that page's history for attribution.
Text content made available for this website through http://creativecommons.org/licenses/by-sa/3.0/
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In the Philippines, carbonate rocks occupy a large portion of the natural landscape, comprising about 1,171 municipalities. Some of the places in the country that are prone to sinkholes are the provinces of Bohol and Cebu, Rizal province's municipality of Tanay, Pangasinan province's Hundred Islands, and the chartered city of Baguio.
Text content copied from:
Wikipedia article Sinkhole
https://en.wikipedia.org/wiki/Sinkhole
Windows To The Universe article Earth
http://www.windows2universe.org/earth/earth.html
Mines and Geosciences Bureau of the Philippines article MGB Embarks On Subsistence Susceptibility Assessment
http://www.mgb.gov.ph/2015-05-13-02-02-11/mgb-news/80-mgb-embarks-on-subsistence-susceptibility-assessment
Some changes were made.
See that page's history for attribution.
Text content made available for this website through http://creativecommons.org/licenses/by-sa/3.0/
Next article - - - Soil Erosion