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sinkhole |
Also found in: Dictionary/thesaurus, Wikipedia, Hutchinson | 0.06 sec. |
sinkholeor sink or dolineDepression formed as underlying limestone bedrock is dissolved by groundwater. Sinkholes vary greatly in area and depth and may be very large. The two main varieties are those caused by the collapse of a cavern roof, and those caused by the gradual dissolving of rock under a soil mantle. Collapsed sinkholes generally have steep rock sides and may receive streams that then flow underground. Soil-mantled sinkholes are generally shallower; they may become clogged with clay and hold a small lake. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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TECHNICALLY, the flood that erupted on Cantara Street in Sun Valley Thursday night -- ripping a 40-foot-long, 8-foot-deep sinkhole -- was the result of abnormally cold weather. Even while his expensive Los Angeles house is threatened by a nearby sinkhole, Richard is making fast friends with a garrulous Middle Eastern donut shop owner, a famous writer and a popular actor. Based on the experiences of a teacher who worked with inmates at San Quentin State Prison, the site features earth-science lessons and activities such as mapping the schoolyard, identifying rocks and learning about sinkholes. |
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