Figure 9 Events probability density functions for the last 20 ka along the JVF from historical, archaeological, and paleoseismic data.
The average recurrence interval is 1165 yr (σ = 243 yr) for the whole period but varies from 787 yr (σ = 1212 yr) for historical andarchaeological data
to 1480 yr (σ = 705 yr) for paleoseismic data. See text for a detailed analysis. The color version of this figure is available only in the electronic edition.
Figure 5. Trench logs with lithological descriptions. (a) Trench T1 shows a distributed pattern of vertical faults that may be resolved within the uppermost layers but
cannot be followedthrough massive clay units of Lisan age. Radiocarbon dates suggest the most recent event occurred before A.D. 1490–1800.
(b) Trench T2 displays a main fault zone filled with breccia that have been ruptured afterward and documents the most recent event, radiocarbon dated after A.D. 560–660.
Combined, these observations suggest two surface-rupturing events occurred atGhor Kabed between A.D. 560 and A.D. 1800, which may be related to the A.D. 749 and A.D. 1033 events.
(c) The exposure of T3 is mainly composed of Lisan sediments. A series of fine gained colluvial and alluvial units overlays Lisan clays and provides insight on recent events.
(d) Trench T4 is originally a road cut that was noticeably extended and cleaned. It is oriented ~45 ° to the fault, which widens the deformation zone.
This exposure provides the bulk of the paleoseismic dataset. See text for details.
Figure 5. (e) Correlations of stratigraphic sections of trenches. The geological formations of Lisan and Damya are common
basement-bottom units for trenches. Erosion processes (tilde lines) have major effects on soft sediments, and Trench T3 shows a
significant hiatus of the Damya formation. The correlation between alluvial and lacustrine deposits and the related radiocarbon dating
(see also Table 1 and Fig. 7) illustrate the different recent
depositional environments at trench sites. The color version of this figure is available only in the electronic edition.