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Cassinis, R.

Lechi, G.

Marini, A.

Zilioli, E.

English

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Heat capacity % pping Mission (HCMM) Program
Investigation HCMM - 050
STUDY OF GEOLCGICAL STRUCTURE. OF SICILY AND OTHER IT ALIAN AREAS
P.I. Roberto CASSINIS
Istituto per la Geofisica delta Litosfera
Consiglio Nazionale delle Ricerche
Milano (Italy)
Third progress report - June I980
prepared by:
Roberto Cassinis,	 P. 1.
Gicvanni Lechi,	 Co-investigator
Eugenio Zilioli,	 Geology
Alberto Marini,	 Geology
(L-8u-10190 STUDY OF GEOLUGYI.,AL 3'1`RUL`i'Ui6&
OP SICILY AND OTHER ITALIAN AhEAS P1:U4ress
tceport 4cons,i.y lio Ndzionalu dell e RiCL VCne,,
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I. Foreword
We refer to our serond lwogrv ss report. (January I980) and, in particular,
to the first map of A.T.I. obtained in the area along the Gu l f of Drosei
(Eastern Sardinia).
While waiting fur ot her M's that could allow the determination of A.T.I.
in the same and in other areas, a ground survey has been accomplished along
the profiles of fig. 1 (fig. 4 of the Ind report). The ground truth has
been collected in order to try to explain the A.I.I. and thermal anomalies
observed,
In fig, l the points where the relevant observations have been made and
samples collected for further laboratory examination are marked with arrows
and progressive numbers.
II, Ground truth collected along
_ ..
t
.
	rofhe piles of fic^, 1 (numbers correspond
	
.. _._ 	 ... , ,._ _ _... _ ... 
to arrows)
1) The outcropp ing formation is a veo► acid popmrtitic. granite.
The topography is flat and the vegetation is almost missing. Very thin soil
cover, almost non-existant. Alteration sands present in part of the area.
2) A morphological change (from flat areas to hills or typical plateaux)
corresponds to the contract between granit e s and basalts.
3) The pattern illustrated in sketch n, 1 could be the reason for the increase
of the A.M.
4) The situation is illustrated in detail by the sketch n. 2. The anomaly
can be originated by the strong contrast between the bare exposure of granite
and the dolomites covered by high vegetation.
M R
	 2loo;.,, N
y ) The observed area i,, located on a high plateau covered by an unif'orme
hlancket of mediterranran vegetation. A small swamp area of 300 x 2C0 m
could influence the A.I.I. The graniti facies is aplitic; therefore
the alteration sand, are much finer ,
 that at point 1 (see sketch n, 3),
G) The situation is here very clear, The vegetation reaches the highest
density of Sardinia, A deep valley cut in limestones and covered by tall
tress runs in NE-SW direction.
III.	 The collection of ground truth is continuing along other, profiles.
R. Cassinis, P.I.
Figure 1 caption;
Profiles (see for position fig, 2 of the.,
 second progress r°:port).
The arrows represent the ground truth collection points illustrated
in paragraph II).
Encl. 3 pages of figs.
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Geological sketch n.1
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Geological sketch n.3
L R G F N D A
Present clayey deposits by surfJcial running
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Scree deposits (Talu4)
Neoqenic basalts
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Dolomitic limestones
Hercynian granites
Overthrust
Main fault


Study of geological structure of Sicily and other Italian areas

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