Desde rome-arch este dato interesante.

----- Original Message -----
From: "MARTIN G CONDE" <mgconde@...>
To: <Ostia-L@yahoogroups.com>; <romaeterna@yahoogroups.com>;
<rome-arch@yahoogroups.com>
Sent: Sunday, November 30, 2008 1:25 AM
Subject: [rome-arch] Foglio Geologico 386 "Fiumicino" alla scala 1:50.000
[Italiano / English Text].


Il foglio geologico 386 Fiumicino (già Lido di Ostia) è attualmente in corso
di realizzazione: per la parte a mare nell'ambito di una convenzione tra
Servizio Geologico Nazionale e Regione Lazio, per la parte a terra
direttamente dal Servizio Geologico d'Italia/Dipartimento Difesa del Suolo
in collaborazione con l'Università "La Sapienza" di Roma e con il Servizio
geologico della Provincia di Roma per gli aspetti inerenti la geologia
applicata (...).

Fonti / source:
http://www.apat.gov.it/site/it-IT/Progetti/Foglio_Geologico_Fiumicino

Parte a terra
L'area del foglio presenta numerosi motivi di interesse legati alla presenza
del delta del fiume Tevere, che costituisce, per rilevanza ed estensione,
l'area deltizia italiana più importante dopo quella del fiume Po, nonché
alla presenza di ampie zone completamente antropizzate. Nell'area del foglio
sorgono, infatti: la porzione meridionale dell'Aeroporto Internazionale
Leonardo da Vinci, i centri abitati di Lido di Ostia e Fiumicino, diverse
aree a elevata densità costruttiva nonché le aree archeologiche di Ostia
Antica, della Necropoli di Porto e del Porto di Traiano, per un'estensione
pari a poco meno del 50% dell'area totale.

See image:
http://www.apat.gov.it/site/_Images/progetto_fiumicino_dem_sezioni.jpg

----------

Geological sheet no. 386 "Fiumicino" is currently being prepared. The part
related to the sea area is being realized according to an agreement between
the National Geological Service and the Lazio Region. The part related to
the land area is being realized directly by the Geological Service of Italy,
Land Defence Department, in collaboration with "La Sapienza" University of
Rome and the Geological Service of the Province of Rome (for aspects
concerning applied geology).
This area of the Sheet includes the Tiber delta sedimentary sequence that
was deposited on top of the Würmian erosional surface during the last
glacial cycle.
The Sheet's realization comprises the cartographic representation of about
1,400 km of seismic records and bed samples collected (with gravity bucket
and core barrel) over the last 20 years by "La Sapienza" University of Rome.
The bathymetry was supplied by the Navy Hydrographic Institute (Istituto
Idrografico della Marina), with adequate details for this type of study.
Among other things, this enabled the relocation of old seismic data that was
adjusted according to more precise parameters offered by the current sea
station systems.
Sea maps were prepared according to rules provided by the "New guidelines
for the mapping of marine areas on a scale of 1:50,000". They represent the
various sub-environments deposited under the delta and their interaction
with the external and slope platform morphology and sedimentation.
The good penetration of the seismic signal in these types of sediments
(except in limited areas where there are coarser deposits or gas pockets)
enables a geometric reconstruction of the post-glacial deposit sequence of
the area with a high vertical resolution.
The application of sequential stratigraphy concepts, facilitated by
three-dimensional methods of analysis, enables the successful matching of
the geology of emerged and submerged areas, showing their evolution in time.

Land area

This area of the Sheet has many points of interest related to the presence
of the Tiber River delta. Due to its relevance and extension, it is the most
important delta area in Italy after the Po River delta. It also has large,
highly anthropized areas. Indeed, this area of the Sheet includes: the
southern part of the "Leonardo da Vinci" international airport; the
inhabited areas of Lido di Ostia and Fiumicino; several densely constructed
areas and the archaeological areas of Ostia Antica, the Necropolis of Porto
and the Traiano Port, covering almost 50% of the total area.

These particular features required intense data collection activities, which
were carried out during the mapping campaign (on a scale of 1:10,000).

Fonti / source:
http://www.apat.gov.it/site/en-GB/Projects/Geological_Sheet_of_Fiumicino/default\
.html





Martin G. Conde
Washington DC, USA
mgconde@...
http://www.flickr.com/people/imperial_fora_of_rome/






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