SpletPotholes on the River Ure, close to Ayesgarth Falls. They are formed when sediment and other material carried by a river scour the bed. Where depressions exist in the channel floor turbulent flow can cause pebbles … SpletA swallow hole is a place where the ground literally swallows up a stream. Swallow holes (which some people call potholes) are on the top surface of rocks that allow water to pass through. Mostly commonly these are …

Karst Features in Indiana Indiana Geological & Water Survey

SpletKarst hazards. Groundwater contamination: The uppermost or shallow groundwater in karst terrains can easily be contaminated because surface waters can move rapidly and flow directly into the subsurface at sinkholes and swallow holes (Hasenmueller and Powell, 2005). This water flows underground without the benefit of filtration by soil and bedrock … Spletnoun an air or gas vent, especially one to carry off fumes from a tunnel, underground passage, etc. either of two nostrils or spiracles, or a single one, at the top of the head in … ktm of temecula

2013 Geography Higher Paper 1 Finalised Marking Instructions

SpletThe hole is usually bowl-shaped and can be quite large. Sometimes the bedrock may collapse all of a sudden to form such a solution sinkhole and other times it happens over time. 2. Cover Collapse Sinkhole ... sinkholes could appear and swallow huge chunks of land with anything on them including roads, houses and even human beings and animals. ... Splet29. dec. 2015 · Sink Hole/Swallow Hole Sink holes are funnel-shaped depressions having an average depth of three to nine metres. These holes are developed by enlargement of the cracks found in such rocks, as a result of continuous solvent action of the rainwater. The surface streams which sink disappear underground through swallow holes. Karst Window Splet20. okt. 2004 · The hollows are called dolines or shake holes. The shake hole is then eroded by streams and a vertical hole known as a pothole or swallow hole is formed. These holes can, in turn, be enlarged by heavy rainfall or glacial meltw*ter. Gaping Gill, in the Yorkshire Dales, is an example of an enlarged swallow hole. all we need now is sink holes . . . ktm of reno