290420878

. I \. I l ■

lOkrr,

ń-Acquapendent Ona no

pAGL/4

Grot te di Castro

/one /n T.

AIluviaI materiał (a) slope debris (b)

Travertines

Bomarzo

Vatierano

Volcanites

Plio -pleistocenic marinę sediments

Pre - pliocenic sedimentary rocks

Typical stratigraphic series in sites affected by mstability phenomena

n n □

t. J *SS

9mS

to CA

11

12

■+    +    ■+■    4" -h

+    4-    +    4-

Ciyita +    4*

Castetlana -f-

Fig. 2 - Schematic geologie map of Southern Tuscia and typical stratigraphic successions at the sites affected by instability phenomena. (1) Lava; (2) Competent Tuff; (3) Loose Tuff; (4) Travertine; (5) Conglomerates;

(6) Sands and Gravels; (7) Sands and Silts; (8) Plio-Pleistocene Clays; (9) Springs; (10) Tunnels and Caves; (11) Landsliding Areas; (12) Edge of the slab affected by major instability phenomena

842