Proceedings of the 12th International INQUA meeting on paleoseismology, active tectonic and archaeoseismology

292 PATA Days 2024 Fig. 6: a) Pseudonodules seismites observed in U1. b) Pseudonodules seismites between the top U5 and base of U6. Fig. 5: Load cast and flame structure seismites observed between the top of U6 and base of U7. Seismites and estimated paleoseismic magnitude. According to studies by (Shmuel &Amotz, 1995), (Audermand & Santis, 1991) seismic events with magnitude M>5 can generate processes like liquefaction and generatethe structure of deformation. The study site, consist in sedimentary deposits of claystone and siltstone, which allow the formation of ductile deformations such as the following. Load cast: Generally, these structures are synformand are associated with antiforms (Flame structure) such as (Figure.5) where, penetration is visualized of overlying united (U7) to the underlying (U6) with concave shape (Geraint, 2003). This structure is present in various zones on the outcrop. The U7 consists of gravel with a siltstone matrix enter U6 with >10 cm of length. Pseudonodules: The author (Allen, 1982) mentions in his article that this structure consists of isolated masses belonging united superior which is involved in the underlying. Pseudonodules are originated by the earthquake of M6.5 (Kuenen, 1958). Pseudonodules are present inside U1 with a length >12 cm and a height of 10 cm. Also, they are at the top of U5 with a diameter of 1 cm as shown in (Figura.6 a) y b). Flame structure: Based on the study by (Topal & Özkul, 2014) are formedwhere the overlying sediments are depressing into underlying sediment and forming a flame-like structure. As mentioned above, these structures always are accompanied by load cast such as (Figure. 5) in a field measuring approximately 5 cm in U7. Dike: This type of structure has its origin in earthquakes of magnitude 5 to 8 (Audermand & Santis, 1991). Usually, the size of the dike is variable from 30 cm to 1 m (Topal & Özkul, 2014). The example in (Figure 7) shows units formed by gravels with siltymatrix that undergo a penetration process starting in U8, which cracks the lower unit (U6). Forming a dike of more than 2 m in length.