Figure 3
From: 25,000 Years long seismic cycle in a slow deforming continental region of Mongolia
West Wall of the trench (a) Profile through the topography of Fig. 2 and emplacement of the trench wall. (b) Photomosaic and (c) Log of the west wall of the trench. July 2017. Minimum age Model OSL age from Table 1 are reported. Grey units U0 correspond to the topsoil offset by the 1967 surface rupture. It is deposited above U1 and U2 that correspond to undifferentiated units of sands and fines separated by an earthquake horizon (EQh2). This horizon corresponds to an erosional surface in the part located south of the backthrust and to a reworked red gouge in the northern part. EQh3 similarly separates U3 from U2. U3 sedimentary units were deposited above the metamorphic rocks of U4 (in blue).
