By E. Buforn, J. Martín-dávila, A Udías (auth.), E. Buforn, J. Martín-Dávila, A. Udías (eds.)
The following 4 papers take care of the seismicity and seismotectonic of the quarter. Carrilho et al. current the 1st result of GEOALGAR, a venture initiated in 2000 to observe the seismic job within the Algarve zone (southern Portugal). during this paper result of the relocation of epicenters and backbone of fault aircraft strategies are provided. the hot epicentral destinations convey a extra geared up spatial distribution that may point out a potential correlation with a few identified tectonic gains. Fault airplane recommendations are predominantly of strike-slip movement in keeping with a horizontal compression within the NW-SE to NNW-SSE course. The paper by way of Yelles-Chaouche et al. offers a close learn of the 22 December, 1999 earthquake at Ain Temouchent (northwest Algeria) of importance five. 7. The earthquake brought on severe harm within the city of Ain Teemouchent with 25 casualties and 25000 humans left homeless. depth map, floor gains and the focal mechanism, in line with wave shape research, are proven. The mechanism corresponds to opposite fault movement with planes amazing NNE-SSW because of horizontal compression within the NW-SE path. This corresponds to the overall mechanism came across for Algeria earthquakes. Buforn et al. current a research of the features of the plate boundary among Africa and Iberia, from west of Cape San Vicente to Algeria, utilizing seismicity and resource mechanism facts. The area is split into 3 parts which occur assorted characteristics.
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PRINCIPI, G. and TREVES, B. (1984), II sistema Corso-Appenninico come prisma d'accrezione. Riflessi sui problema generale del limite Alpi-Appennini, Mem. Soc. geol. It. 28, 549-576. , and REYES, M. (1996), The Intra-Orogenic Soportujar Formation of the Mulhacen Complex: Evidence for the Polycyclic Character of the Alpine Orogeny in the Betic Cordilleras, Eclogae geol. He1v. 89, 129-162. , and MORTEN, L. (1999), Petrology and Metamorphic Evolution of Ultramafic Rocks and Dolerite Dykes of the Betic Ophiolitic Association (Mulhacen Complex, SE Spain): Evidence of eo-Alpine Subduction following an Ocean-jloor Metasomatic Process, Lithos 49, 23-56.
In both the pre-Permian and Mesozoic rocks, the main foliation and the NNE- to NW-trending stretching lineation (Fig. 6) developed contemporaneously with the retromorphic minerals, and are associated with dominant top-to-the-N kinematic indicators. , 1997). These structurally recorded tectonic-metamorphic phases are labelled II and II1 in Figure 7, after BALANYA et al. (1997). , 1989; TUBIA and GIL IBARGUCHI, 1991; BOUYBAOUENE, 1993; AZANON, 1994). , Zaouia low-angle normal fault, Fig. 6B). Late-orogenic Magmatism Late-orogenic, calc-alkaline magmatism is widespread in the entire Alboran region ("Trans-Alboran province", partly shown in Fig.
2001), Michard et al. sale 503 The Alpine Rif Belt (Morocco) Vol. 7 II : this work (2003) =. NNW '. ~ : A: Early-Middle Eocene (50-40 Mal NNW B: Oligocene (30-25 Mal -I()()km I ..... cGriM. ~pMdcu.. CJ--- c: Early-Middle Miocene (18-14 Mal Figure 9 The Betic-Rif mountain building: Two alternative scenarios, depending on the age (still poorly constrained) of the HP-LT metamorphic event in the Sebtides-Alpujarrides. Location of the sketch cross-sections: Figure 8. limestones and Nummulitic calcarenites during the Paleogene, respectively .
Geodynamics of Azores-Tunisia by E. Buforn, J. Martín-dávila, A Udías (auth.), E. Buforn, J. Martín-Dávila, A. Udías (eds.)