Des traces de glace de ségrégation dans la grotte de Remouchamps (Belgique) : conséquences en ce qui concerne la sédimentation et la paléoclimatologie ; Traces of segregation ice in the Remouchamps Cave (Belgium): evidence for former permafrost.

peer reviewed ; In countries with a modern temperate climate, the extent of former permafrost is generally estimated from the observation of ice wedge casts, remnants of pingos and palsas, and periglacial involutions. These features give no indication at all about the depth of permafrost and are ineffective in identifying the limits of former permafrost. A new tool for this research may be found in caves. We already know that speleothems did not grow -- or grew little — during the colder periods of the last glaciation, probably because of the impervious nature of the frozen ground. The discove... Mehr ...