Active faulting in the north Aegean basin

Deformation Pattern in the Western North Aegean Trough: Preliminary Results

“…Some of the fault segments overlap with others, they frequently display anastomosing shape and they form structural "highs" and "lows" along the trace of the major fault zone. Very significant cumulative subsidence of NAT in respect to its southern margin (Sporadhes Arhipelago) of >2km (Papanikolaou et al, 2006) or even >4km as indicated by the seismic data presented here has occurred simultaneously to the dextral horizontal offset. In fact, we observe that maximum subsidence occurs below the southwestern corner of NAT and coincides with the area of maximum sediment thickness accumulated since the Messinian (Fig.…”

“…Mascle and Martin (1990) suggest that the western part of the NAT was created by NW-SE extension in Middle or Late Miocene which may have progressively followed by NE-SW extension along with a transcurrent component due to the dextral movement of the NAF. http://epublishing.ekt.gr | e-Publisher: EKT | Downloaded at 09/05/2018 07:42:54 | GPS measurements over the last decades (Le Pichon et al, 1995;Barka and Reilinger, 1997;Reilinger et al, 1997Reilinger et al, , 2000Kahle et al, 2000, McClusky et al, 2000, Müller et al, 2013 indicate that oblique opening at 30mm/yr across the Sporades Basin is compatible with the cumulative deformation of the basin (Papanikolaou et al, 2002;2006). Refined analysis and interpretation of previous GPS data by Nyst and Thatcher (2004) suggest that the predicted South Marmara-Eurasia motion across the northern North Anatolian Fault and the North Aegean Trough is 23 mm/yr of almost pure right-lateral strike-slip.…”

“…and east of Skopelos Isl. and Pelion Peninsula (Papanikolaou et al, 2006) is driven by both the SW-NE trending dextral NAF and the NNW-SSE trending, apparently normal faults which mark the western margin of NAT (Fig. 5).…”

“…Systematic and comprehensive interpretation of the fault network in the NAT has been firstly presented by Mascle and Martin (1990) on the basis of low-resolution multi-channel seismic profiles and more recently by Papanikolaou et al (2002Papanikolaou et al ( , 2006 based on swath bathymetry data and single channel seismic profiles. The steep, southern margin of the Trough has developed along a major fault zone, considered as the westward prolongation of the North Anatolian Fault in the North Aegean Sea through the Saros Gulf.…”

Offshore Faulting in the Aegean Sea: A Synthesis Based on Bathymetric and Seismic Profiling Data

“…1) Lyberis (1984) provided a first map of offshore faulting in the North Aegean Trough; this was based on the interpretation of single-beam bathymetry and a few industrial seismic data. Papanikolaou et al (2002Papanikolaou et al ( , 2006, using swath bathymetry and single channel seismic profiles mapped in some detail various faults cutting across the western North Aegean Trough. Yaltirak et al (1998) and Kurt et al (2000) provided maps of offshore faults in the Saros Graben, the easternmost area of the North Aegean Trough.…”