In this Jan. 9, 2017, file photo, workers inspect a sinkhole in Philadelphia. The Philadelphia Water Department said a water main break caused the sinkhole to open up on the street. Sinkholes are not a new phenomenon in the United States, but a recent spate of huge, sudden-appearing cave...
A cluster of staggering sinkholes has been discovered in Baise City of south China's Guangxi Zhuang Autonomous Region, the China Geology Survey of the Ministry of Natural Resources announced on Friday. A sinkhole is typically formed over time by water erosion or some form of...
The three major types of sinkholes know to us are : Solution, Cover Collapse and Cover Subsidence. Solution sinkholesare most commonly seen in areas that have a very thin cover of soil on the surface, exposing the bedrock below to continual erosion by water. As the water percolates through...
This paper reports the methodology developed to draw up a geohazard map of cover-collapse sinkhole occurrences in the 'Tournaisis' area. In this area, Carboniferous limestones are overlain by a Mesocenozoic cover, mainly consisting of marls, sand and clay. The thickness of this cover ranges fr...
In one spot, an old truck can be seen in a hole beneath a house porch, still resting where a landowner pushed it into a mine cavern in the 1940s, Barrow said. The area near the 2020 collapse has beenvacated and gated off, but people still li...
(If you want to contribute and have specific expertise, please contact us at nature@cgtn.com.)RELATED STORIES Large rare earth deposit discovered in SW China China 17:06, 18-Jan-2025 ICRC TEAM IN GAZA ON THE WAY TO COLLECT ISRAELI HOSTAGES FROM HAMAS – OFFICIAL INVOLVE...
Sinkholes are fairly common, due to collapsed caves, old mines or dissolving material but the circumstances in South Dakota stand out, said Paul Santi, a professor of geological engineering at the Colorado School of Mines. The combination of such large sinkholes endangering so many homes makes ...
Sinkholes are most common in what geologists callkarst terrain, which involves types of rock including limestone below the land surface that can naturally be dissolved by groundwater circulating through them. They can also happen due to old underground mines. ...
Over the last few decades, thousands of sinkholes have developed at an increasing pace, with the majority along the western and eastern shores of the Dead Sea. Recent studies indicate that the number of sinkholes in the Dead Sea Basin (DSB) has reached more than 6000; each of them, on ...
Chinese researchers have found the world's deepest underwater sinkhole, or blue hole, at China's Xisha Islands in the South China Sea. The blue hole is 300.89 meters deep, surpassing the current record of 202 meters, the researchers confirmed Friday.