Geodynamic Setting

The continuous compositional variation from Pietre Nere and Vulture to Campania and Pontine Islands supports the idea that the upper mantle beneath this transect is a hybrid between OIB-type and subduction-type material, with variable proportions between these two end-members. The origin of these components has important bearing on geodynamic significance of magmatism along the Vulture-Pontine Islands transect. 

According to slab break-off model, the arc signatures of Mount Vulture would derive from melts and fluids released by the detached and sinking 

The Vulture, Campania and Pontine volcanoes are characterised by magmas that vary from calc-alkaline to ultrapotassic compositions. Calc-alkaline rocks occur as rhyolites at onza and as basalt to basaltic andesites beneath the Campanian plain. Both these occurrences are older than the potassic and ultrapotassic magmas, indicating an overall time-related increase in potassium on a regional basis. 

Rock type Leucitite Tephrite Tephri- phonolite Phonolite Trachyte Shosho- nite Latite Trachy- phonolite 

Volcano Ischia Procida Parete-2 well Ponza  

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Bailes, A.H. Galley, A.G., 1999. Evolution of the Paleoproterozoic Snow Lake arc assemblage and geodynamic setting for associated volcanic-hosted massive sulphide deposits, Flin Flon Belt, Manitoba, Canada. Canadian Journal of Earth Sciences, 36, 1789-1805. 

By the present time the models of geodynamic settings for a number of regions of the North-Asian continent combining the action of deep plumes and riftogenesis have been worked out (see. 

Wyman, D. 1999. A 2.7 Ga komatiite, low Ti tholeiite, arc tholeiite transition, and inferred proto-arc geodynamic setting of the Kidd Creek deposit evidence from precise trace element data. Economic Geology Monograph, 10, 511-528. 

The results of conducted studies lead to the conclusion that the landslide processes are primarily determined by modern geodynamic setting. Large landslides occur within narrow linear zones which are spatially confined to the marginal parts of modern structures of uplift. Cyclic activation of landslides coincides in time with a significant abrupt deviation of the compression axis direction from the horizon. Atmospheric precipitations weaken resistance of covers on the slopes and create conditions for their slumping. 

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