Istituto di Geoscienze e Georisorse     
Barberi F., Innocenti F., Landi P., Rossi U., Saitta M., Santacroce R., Villa I. The evolution of Latera caldera (central Italy) in the light of subsurface data. In: Bulletin of Volcanology, vol. 47 (1) pp. 125 - 141. Springer, 1984.
Subsurface geothermal exploration has considerably added to our knowledge of the Latera volcanic complex. A syenitic body is Iocated about 2 km below the present-day surface; K-Ar data point a 0.9 Ma age. The primary magma was a silica-saturated trachyte; undersaturated, hauyne-bearing products are found near the carbonatic wall-rocks and have been interpreted as reaction products. Subsurface data from deep drilling and geophysical surveys suggest that the Latera caldera resulted from three main successive collapse phases: ( i) formation of an old caldera, now buried, related to the eruption of ignimbrites from the syenitic magma chamber; (ii) sinking of the eastern sector as a consequence of the formation of the nearby Bolsena caldera (~0.3 Ma); (iii) multistage formation of the present Latera caldera .(~0.16 Ma).
URL: http://www.springerlink.com/content/wt7603562476/?p=b76753ff0d3d4a3c9ee37c1389a02f0c&pi=206
Subject Italy
Latium region
Latera caldera
geothermal wells
volcanic products

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