Geothermal and rheological regime in the Po plain sector of Adria (Northern Italy)

Auteur :
VIGANÒ, A.

Description :
The article presents a thermo-rheological study of the Adriatic crust in the central Po plain (Northern Italy), which records the convergence of the Alpine and Apennine external fronts. The present thermal regime of the crust is inferred from geological and geophysical data from oil exploration. A set of temperature data from 37 deep boreholes (bottom hole, drill stem, and production test temperatures) is used to estimate undisturbed formation temperatures down to 6-7 km of depth. Best quality data are used to estimate upper crustal geotherms, which are subdivided into four groups taking into considerations the following factors: i) presence/absence of relevant fluid circulation; ii) conductive thermal refraction; iii) recent sedimentation, and iv) other disturbing tectonothermal processes (e.g., recent tectonics). Using the estimated crustal structure and composition and the best-fitting geotherm, a representative strength envelope is obtained. - (NF)


Type de document :
Article de périodique

Source :
Italian Journal of Geosciences (Testo stampato), issn : 2038-1719, 2012, vol. 131, n°. 2, p. 228-240, nombre de pages : 13, Références bibliographiques : 74 ref.

Date :
2012

Editeur :
Pays édition : Italie, Roma, Società Geologica Italiana