Cecilio López-Tercero, profesional speleologist was injured during the exploration of the karst system in Leymebamba, Amazonas, located in the Andean Cordillera.
The session on evaporite karst will be held at the South-Central Section, Geological Society of America (GSA) meeting in Stillwater, OK, on March 19-20, 2015.
The State of Minnesota has positions open for hydrologists. These positions include some for hydrogeologists.
Mine Water Solutions is a conference focused on EXTREMES and SOLUTIONS to mine water issues in very challenging environments. It will be held in Vancouver, Canada, April 12-15, 2015.
The announcement and the first circular for Isotope Workshop XIII, Zadar Croatia - 2015
Did you know?
That blowhole is 1. opening in the roof of a cave or cavern through which air is expelled vigorously. in coastal areas the phenomenon is usually due to compression of air within the cave by incoming tides or waves . 2. cliff top entrance to a sea cave, also known as a geo, gloop, or gloup . 3. (australian.) a small hole in the surface of the nullarbor plain through which air blows in and out with observable force, sometimes audibly . related to breathing hole.synonyms: (french.) trou souffleur; (german.) windhohle; (greek.) ope ekphysosa; (italian.) bocca soffiante; (spanish.) soplador; (turkish.) uflenme agzi; (yugoslavian.) vjetrenica, veternica, puhaljka, pihalnik, dihalnik. see also steam hole.?
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.