Karst is defined as a terrain with distinctive landforms and drainage arising from greater rock solubility in natural water that is found elsewhere. This definition is part of the first site regarding this topic entitled Karst (1), which is provided by Purdue University instructor Robert Hall. The PowerPoint presentation provides a general introduction to the subject, tells how karst landforms...

If you are having difficulty remembering the details of the Earth's geological structure or the nature of major minerals and rock types, you can consult this excellent introductory course offered as part of MIT's OpenCourseWare initiative. The materials are drawn from Professors Perron and Jagoutz's 2011 "Introduction to Geology" course, and they include a number of lecture notes, available for...