Volume 47, Issue 1 (2018)

Cover and Front Matter



Geothermal flux and phreatic speleogenesis in gypsum, halite, and quartzite rocks
Giovanni Badino

  • Geothermal heating of subterranean water
  • Temperature dependence of rocks solubilitiy
  • Geothermal dissolution of rocks
  • Safety of artificial subterranean waste storages


Cave monitoring in the Béke and Baradla caves (Northeastern Hungary): implications for the conditions for the formation cave carbonates
György Czuppon, Attila Demény, Szabolcs Leél-Őssy, Mihály Óvari, Mihály Molnár, József Stieber, Klaudia Kiss, Krisztina Kármán, Gergely Surányi, and László Haszpra

  • Three years monitoring in Béke and Baradla Caves
  • Stable isotope and trace element measurements of drip waters and fresh calcite precipitates
  • Link between the chemistry of the drip water and the hydrological conditions
  • Sign of prior calcite precipitation
  • Link between the stable isotope composition of fresh calcite precipitates and the hydrological conditions


Underground dinosaur tracksite inside a karst of southern France: Early Jurassic tridactyl traces from the Dolomitic Formation of the Malaval Cave (Lozère)
Jean-David Moreau, Vincent Trincal, Daniel André, Louis Baret, Alain Jacquet, and Michel Wienin

  • Hettangian tridactyl dinosaur tracks were discovered in the Malaval Cave (southern France)
  • The tracksite was studied using photogrammetric imaging technique
  • More than 26 footprints of theropods were identified
  • The depositional environment varied from subtidal to intertidal/supratidal flat marsh
  • This work highlights the great interest to heighten palaeoichnological prospections in karsts


Assessing preservation priorities of caves and karst areas using the frequency of endemic cave-dwelling species
Eugen Nitzu, Marius Vlaicu, Andrei Giurginca, Ioana N. Meleg, Ionut Popa, Augustin Nae, and Ştefan Baba

  • Endemic cave-dwelling species rarity is used to compute an original endemicity index of caves
  • Both stygobitic and troglobitic endemites were taken into consideration in a holistic concept
  • A formula is provided for an objective weighting of the frequency steps
  • A map of hotspots of 'biospeological conservation concern' was generated using the EI
  • The developed EI is useful in assessing karst areas vulnerability


Phosphate speleothems in caves developed in iron ores and laterites of the Carajás Mineral Province (Brazil) and a new occurrence of spheniscidite
Alan R.L. Albuquerque, Rômulo S. Angélica, Daniele F. Gonçalves, and Simone P.A. Paz

  • Bat guano is a potencial source of phosphorus to phosphate speleothems formation
  • The guano's geochemical signature is detected by increase of Zn, Ni, and Rb
  • Metals elements are bioaccumulate in the bat guano
  • The first occurrence of spheniscidite in cave developed in iron ores and laterites
  • The unit cell parameters for spheniscidite, obtained using Rietveld refinement, are slightly lower than those of the ICSD-39654 file


The blurred line between photic and aphotic environments: a large Mexican cave with almost no dark zone
Luis M. Mejía-Ortíz, Tanja Pipan, David C. Culver, and Peter Sprouse

  • Muevelo Rico has almost no dark zone, throwing into relief what constitutes a cave
  • Light is present in most of the cave, as are reduced daily temperature and humidity cycles
  • Troglomorphic species and their potential predators occur throughout the cave
  • The presence of troglomorphic species is best explained by the presence of organic matter in photic zones


Flowstone growth in Gournier River (Vercors, France): a diachronic landscape analysis by 3D modelling and photo draping
Kim Genuite, Yves Perrette, and Stéphane Jaillet

  • An increase of flowstone deposit was seen in Vercors cave, we intended to quantify it
  • That increase is associated to global changes, including climate and vegetation
  • A quantification method has been adapted to the subterranean environment


First assessment on the air CO2 dynamic in the show caves of tropical karst, Vietnam
Duc A. Trinh, Quan H. Trinh, Angel Fernández-Cortés, David Mattey, and Javier G. Guinea

  • Ventilation of Vietnamese tropical caves is stronger in winter-dry season
  • High soil CO2 input and weak ventilation lead to cave air CO2 enrichment in summer
  • Soil moisture fluctuation shows a correlation with variations on cave air CO2
  • Streams and large pools of hydrologically-active caves buffer the air CO2 variations
  • Visitation may be a cause of high CO2 during daytime and in show section

Rapid Communication


Caves as observatories for atmospheric thermal tides: an example from Ascunsă Cave, Romania
Virgil Drăgușin, Laura Tîrlă, Nicoleta Cadicheanu, Vasile Ersek, and Ionuț Mirea

  • First records of S2 thermal tides in caves
  • High-precision temperature data logging
  • 12-hour periodicity revealed by spectral analysis of temperature data
  • No influence on cave atmosphere from rock temperature on semidiurnal scale
  • Atmospheric thermal tides are transferred to caves via pressure changes