Academic Journal

www.elsevier.com/locate/epsl Active faulting offshore SE Spain (Alboran Sea): Implications for earthquake hazard assessment in the Southern Iberian Margin

التفاصيل البيبلوغرافية
العنوان: www.elsevier.com/locate/epsl Active faulting offshore SE Spain (Alboran Sea): Implications for earthquake hazard assessment in the Southern Iberian Margin
المؤلفون: Eulàlia Gràcia A, Raimon Pallàs B, Juan Ignacio Soto C, Menchu Comas C, Ximena Moreno A, Eulàlia Masana B, Pere Santanach B, Susana Diez A, Margarita García D, Juanjo Dañobeitia A
المساهمون: The Pennsylvania State University CiteSeerX Archives
سنة النشر: 2005
المجموعة: CiteSeerX
الوصف: The southern margin of the Iberian Peninsula hosts the convergent boundary between the European and African Plates. The area is characterised by low to moderate magnitude shallow earthquakes, although large historical events have also occurred. In order to determine the possible sources of these events, we recently acquired swath-bathymetry, TOBI sidescan sonar and high-resolution seismic data on the Almería Margin (Eastern Alboran Sea). The new dataset reveals the offshore continuation of the NE–SW trending Carboneras Fault, a master fault in the Eastern Betic Shear Zone, and its associated structures (N150 and NS faults). These structures are active since they cut the Late Quaternary sedimentary units. The submarine Carboneras Fault zone is 100 km long, 5– 10 km wide, and is divided into two N045 and N060 segments separated by an underlapping restraining stepover. Geomorphic features typically found in subaerial strike-slip faults, such as deflected drainage, water gaps, shutter ridges, pressure ridges and ben echelonQ folds suggest a strike-slip motion combined with a vertical component along the submarine Carboneras Fault. Considering the NNW–SSE regional shortening axis, a left-lateral movement is deduced for the Carboneras Fault, whereas right-lateral and normal components are suggested for the associated N150 and NS faults, respectively. The offshore portion of this fault is at least
نوع الوثيقة: text
اللغة: English
Relation: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.378.3006
الاتاحة: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.378.3006
Rights: Metadata may be used without restrictions as long as the oai identifier remains attached to it.
رقم الانضمام: edsbas.F3E9593D
قاعدة البيانات: BASE