The deadline for submitting abstracts (French or English) to the Eurokarst conference is slightly postponed to the 15th of October.
The International Conference on Remediation of Chlorinated and Recalcitrant Compounds is the world’s largest and most comprehensive meeting on the application of innovative and existing technologies and approaches for characterization, monitoring and management of chlorinated and complex sites.
The Geological Survey of Spain (IGME) is conducting a research into the Cerro del Cuevon (-1589 m), the deepest cave of Spain and one of the top ten around the world.
International Speleological Congress will be held in 2017 in Sydney, Australia
Contributions are invited for the special issue on the topic of "Geophysical imaging in karst terrain", which will be published in AIMS Geosciences in 2016.
Did you know?
That conical wall niche is see meander niche.?
Checkout all 2699 terms in the KarstBase Glossary of Karst and Cave Terms
Featured article from geoscience journal
A large number of uniform cone-shaped dissolution pipes has been observed and studied in Quaternary coastal calcareous arenites in Apulia and Sardinia (Italy) and Tunisia. These cylindrical tubes have a mean diameter of 52·8 cm and are up to 970 cm deep (mean depth for sediment-free pipes is 1·38 m). They generally have smooth walls along their length, are perfectly vertical and taper out towards their bottoms. Their development is not influenced by bedding nor fractures. Sometimes their walls are coated by a calcrete crust. Their morphology has been studied in detail and their relationships with the surrounding rocks and with the environment have been analysed. The perfectly vertical development is a clear evidence of their genesis controlled by gravity. The depth of the dissolution pipes can be described by an exponential distribution law (the Milanovic distribution), strongly suggesting they developed by a diffusion mechanism from the surface vertically downward. We believe dissolution pipes preferentially form in a covered karst setting. Local patches of soil and vegetation cause infiltration water to be enriched in carbon dioxide enhancing dissolution of carbonate cement and local small-scale subsidence. This process causes the formation of a depression cone that guides infiltrating waters towards these spots giving rise to the downward growth of gravity-controlled dissolution pipes. A change of climate from wetter phases to drier and hotter ones causes the formation of a calcrete lining, fossilizing the pipes. When the pipes become exposed to surface agents by erosion of the sediment cover or are laterally breached the loose quartz sand filling them may be transported elsewhere.