environment
On
the sur face, you can still see the remains of the exploitation of these
seams, the so-called "outcrop", mined as the result of a
landslip which appears as a great wound opened along the North-Western
slopes of the small range of mountains which divides the area of Arbus
from that of Casargius-Montevecchio.The rest of
these mountains is in part covered by Mediterranean bush with ilex and
cork trees, as well as some recently planted pine woods which have managed
to survive the savage destruction of the woods caused each summer by the
brush fires, often deliberately set.The group of seams mined at
Montevecchio lies tangentially to the granite rnass of the Arburese area
and appears to consist of filling by mineral fluids of a long fault which
opened in the quartz schists as a result of the cooling and subsequent
contraction of the associ-ated granite. |