in the neighbourhood of La Calestienne
|The limestone area or Calestienne mesures only five or six kilometers
in north-south direction. North of it you find the Fagne with
geologically younger layers slate and Frasnian coral reefs that are rich
in fossils. South of the limestone area are the Ardennes with its older
quatzites and slate that are poor in fossils.
The area is also important for the type-localities of the Couvinan,
Givetian and Frasnian .
One of the most well-known quarries where red "marble" has
been exploited is Carrière Beauchâteau in Senzeille at 13 km of La
Calestienne. It's now a protected site where you still can
see how this stone was extracted. Drilling cores from the initial drilling
holes are still spread all over, a huge volume of stone has been sawed and
stands waiting to be pulled down, the factory hall built with briques,
concrete and waste blocks of "marble" keeps standing upright as
do the factory chimney. In the smooth and vertical walls you can see lots
of fossils; certainly the corrals, brachyopods and crinoïds are
20 km from La Calestienne the Marblemuseum
of Rance has been organized in the former municipal hall.
Close to this museum you can go and have a look at the church and
cemetery: the church has been replenished with different marbles from the
region and at the cemetery you can find some beautiful red marble
||On both sides of the Belgian-french frontier you can find
the geologically oldest stones of Belgium (Cambrium) and remnants of
the former slate industry: entrances of slate mines, huge waste pile. In
Fumay and Haybes you still can discover beautiful dry slate walls with (among others)
rustyback, and garden walls
made of big slabs of purple slate.
Museum of Bogny, at 40 km from La Calestienne, you can see a beautiful collection of
trilobites from Vireux, completed with comparable fossils from elsewhere.
Between Najauge and Vireux, just passed the
Belgian-French borderline,at 16 km from La Calestienne, you can find theCustoms
Officer's Wall: a trilobites deposit in the Couvinian level (Middle Devonian). Nowadays this place is one of the
first geologic reserves of France so you are not longer allowed to extract