Dr. Rodrigo Lopes Ferreira of Brazil has announced the launch of the website of the Center of Studies on Subterranean Biology.
The new karst map (digital) of the USA is released by the US GS
An announce for the Friends of Karst meeting this fall in Arkansas
West Virginia University is looking for a new Physical Hydrogeologist at at the Assistant Professor level
The call for abstracts for the 14th Multidisciplinary Conference on Sinkholes and the Engineering and Environmental Impacts of Karst, Rochester, Minnesota, October 2015.
Did you know?
That kunker is see caliche.?
Checkout all 2699 terms in the KarstBase Glossary of Karst and Cave Terms
Glossary of Karst and Cave Terms
Based on "A Lexicon of Cave and Karst Terminology with Special to Environmental Karst Hydrology" EPA/600/R-02/003, 2002, EPA: Washington, DC., Speleogenesis Glossary includes 2699 cave & karst terms
Example of the Karst & Cave Glossary:
The spreading and mixing of chemical constituents in ground water caused by diffusion and mixing due to microscopic variations in velocities within and between pores .
dating of cave sediments
Determination of the age of development of caves is normally impossible. Only the sediments they contain can be dated, and these must necessarily be younger than the containing passage. Geomorphological correlations may allow more accurate dating of the cave erosion. The most useful dating method in current use is based upon a knowledge of the rates of decay of radioactive isotopes of uranium to thorium in stalagmites. This technique allows measurement of ages in material up to 350,000 years old. Dating of stalagmites has confirmed that many cave ages lie beyond this range. Electron spin resonance (ESR) measures the cumulative effects of radiation that are partly a function of time and can give stalagmite ages back to about 900,000 years. Palaeomagnetism may recognize events up to 2 million years old, but a sequence of palaeomagnetically dated sediments is required to allow identification of the actual ages .