Open AccessGeothermics of the Apenninic subduction
Author(s) -
Paolo Harabaglia,
Francesco Paolo Mongelli,
G. Zito
Publication year - 1997
Publication title -
annals of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 60
eISSN - 2037-416X
pISSN - 1593-5213
DOI - 10.4401/ag-3869
Subject(s) - geology , foreland basin , subduction , accretionary wedge , geothermal gradient , back arc basin , slab , arc (geometry) , seismology , prism , petrology , geophysics , tectonics , geometry , physics , mathematics , optics
The subduction of the Adriatic microplate is analysed from a geothermal point of view. In particular four main geodynamic units are distinguished: foreland, foredeep and slab, accretionary prism, and back-arc basin. Each of them is examined from a geothermal point of view and the related open question are discussed. The most relevant results are the determination of the undisturbed geothermal gradient in the aquifer of the foreland; the discovery of a « hot » accretionary prism; and a new model of instantaneous extension of the back-arc basins. The main conclusion is that geothermal data are consistent with a westward dipping subduction that migrated eastward producing a sequence of several episodes at the surface