caa a22 4500 477047602 CHVBK 20180405111334.0 cr unu---uuuuu 170330e19960301xx s 000 0 eng 10.1007/BF00876496 doi (NATIONALLICENCE)springer-10.1007/BF00876496 Evaluation of stresses in two geodynamically different areas: Stable foreland and extensional backarc [Elektronische Daten] [M. Dragoni, C. Doglioni, F. Mongelli, G. Zito] Areas which are geodynamically different have different behaviors both in their thermal regime and seismic activity. A stable area has a geotherm which can be considered as standard, extensional and compressional areas have, respectively, high and low temperature gradients. The Italian region includes different geodynamical areas and all such situations are present. We consider the Apulian platform as an example of a stable area and the Tuscany-Latium as an example of an extensional area. For both of them the present geotherms are calculated, taking into account, for the Tuscany-Latium, its thermal history. Assuming that each region is subject to a constant strain rate, the stresses are calculated as functions of depth and time. The rheological behavior is assumed to be linear viscoelastic, with viscosity dependent on temperature and elastic parameters dependent on lithology. The geothermal profile and the rheological structure of the lithosphere remarkably affect the processes of stress accumulation which control the distribution of seismic activity. The abrupt decrease of the temperature gradient at the Moho produces considerably higher stress values with respect to the case of uniform gradient, thus favoring subcrustal seismicity. In the case of a standard temperature gradient, subcrustal seismicity is predicted and a gap in seismicity, indicating a soft intracrustal layer, exists if there is a discontinuity in rheology. By contrast, in the case of a high-temperature gradient, subcrustal seismicity is not to be expected, even in the presence of a discontinuity in rheology, since subcrustal temperatures are already too high to permit a sufficient stress accumluation. Birkhäuser Verlag, 1996 Stress evolution nationallicence geothermal profiles nationallicence shear zone rheology nationallicence Dragoni M. Dipartimento di Geologia e Geofisica, Università di Bari, Via Edoardo Orabona 4, 70125, Bari, Italia aut Doglioni C. Centro di Geodinamica, Università della Basilicata, Via Anzio, Palazzo Auletta, 85100, Potenza, Italia aut Mongelli F. Dipartimento di Geologia e Geofisica, Università di Bari, Via Edoardo Orabona 4, 70125, Bari, Italia aut Zito G. Dipartimento di Geologia e Geofisica, Università di Bari, Via Edoardo Orabona 4, 70125, Bari, Italia aut pure and applied geophysics Birkhäuser-Verlag 146/2(1996-03-01), 319-341 0033-4553 146:2<319 1996 146 24 https://doi.org/10.1007/BF00876496 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00876496 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dragoni M. Dipartimento di Geologia e Geofisica, Università di Bari, Via Edoardo Orabona 4, 70125, Bari, Italia aut NATIONALLICENCE 700 1- Doglioni C. Centro di Geodinamica, Università della Basilicata, Via Anzio, Palazzo Auletta, 85100, Potenza, Italia aut NATIONALLICENCE 700 1- Mongelli F. Dipartimento di Geologia e Geofisica, Università di Bari, Via Edoardo Orabona 4, 70125, Bari, Italia aut NATIONALLICENCE 700 1- Zito G. Dipartimento di Geologia e Geofisica, Università di Bari, Via Edoardo Orabona 4, 70125, Bari, Italia aut NATIONALLICENCE 773 0- pure and applied geophysics Birkhäuser-Verlag 146/2(1996-03-01), 319-341 0033-4553 146:2<319 1996 146 24 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer