Sinkhole Sinkhole A sinkhole, also known as a cenote, sink, sink-hole, 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 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. Sinkholes may capture surface drainage from running or standing water, but may
Divisions on a Ground Divisions on a Ground Divisions on a Ground: Essays on Canadian Culture is a collection of essays by Canadian literary critic Northrop Frye, edited by James Polk and published in 1982. The collection includes lectures, addresses and previously published articles by Frye. "Divisions on a Ground" presents Frye's theorizing about Canada with respect to three main themes: Canadian literary writing, university education in Canada and internationally, and a more general "social order" perspective. This collection diverges from Frye's better-known "" in its approach to Canada in that it does not present the "Canadian imagination" in isolation, but rather as one