Observatoire Gravitaire Géoazur-en Observatoire Gravitaire Géoazur-fr
[Observatoire Gravitaire Géoazur] Geology & Geomorphology
Geology & Geomorphology

Research Studies by T. Lebourg and B. Fresia, Geoazur, UNS, Nice, France.

The rupture processes leading to landslide formation are linked to a very high degree to the geomorphology and hydrology of the concerned slopes.

Therefore we here are trying in the best way to describe and constrain geological formations on large and small scales.

In that purpose, several means are made available:
- geotechnical studies run in the field by ERG and EEG Simecsol in 2001 and 2003,
- cartographic and field approach,
- use of electrical resistivity tomography.

The results are presented in the following documents.

 
article rubrique
Thursday  10 December 2009
traduction [English ] [français ]
Geological Context
Research Studies by T. Lebourg and B. Fresia, Geoazur, UNS, Nice, France.
On a large scale, the study area is located in the Vence synclinal, covered by the Transgressive Miocene that outcrops northwards. The zone is divided up by North-South and East-West (...) Read the whole article
Thursday  10 December 2009
traduction [English ] [français ]
Hydrogeology of the Area
Research Studies by T. Lebourg and B. Fresia, Geoazur, UNS, Nice, France.
The Vence village is encompassed into a large catchment spreading from the Baous zone north-westerly until the Cagne River easterly. The catchment includes the Jurassic to Oligocene (...) Read the whole article
Thursday  10 December 2009
traduction [English ] [français ]
Geotechnical Approach
Research Studies by T. Lebourg and B. Fresia, Geoazur, UNS, Nice, France.
The site was the subject of several core drilling surveys performed by ERG in 2001 and Simecsol in 2002-2003. A general geometry of the landslide basement is pointed out:a Cretaceous (...) Read the whole article
Thursday  10 December 2009
traduction [English ] [français ]
Geophysical Approach
Research Studies by T. Lebourg and B. Fresia, Geoazur, UNS, Nice, France.
In order to better constrain the observations achieved on the site, several electrical tomography surveys were carried out on the landslide area. The electrical tomography principle (...) Read the whole article
Thursday  10 December 2009
traduction [English ] [français ]
Synthesis
Research Studies by T. Lebourg and B. Fresia, Geoazur, UNS, Nice, France.
The Vence landslide is a rotational landslide around fifteen meters deep, regulated by the site hydrology characterized by the coexistence of two groundwaters, and constrained between (...) Read the whole article