The Relationship of Landslides with lithological units and fault lines occurring on the East Anatolian Fault Zone, between Palu (Elazig) and Bingol, Turkey
Özet
In this study, the relationship of landslides with lithological units
and fault lines on the East Anatolian Fault Zone (EAFZ) between Palu
(Elazig) and Bingol, was evaluated. In the study area, which is located
within the EAFZ, Goynuk to the northeast, Palu Segment to the southwest,
Genc Segment to the south of Bingol plain and Gokdere Uplift in the
intersection area form the main tectonic structures. In addition, the
Karakocan Fault Zone (KFZ) cutting the EAFZ in NW-SE direction between
Palu and Bingol corresponds to another important structure (system). The
area, which is located in a region where a number of faults intersect,
is tectonically very active. This situation has affected the morphology
and caused the formation of many landslides along fault lines. In order
to determine the relationship between the landslides observed in this
area and lithological and tectonic structures, landslide magnitude and
distribution analyses were performed by means of Geographical
Information Systems. For this purpose, the landslide inventory map and
the database were reproduced controlling the satellite images in field
studies. Similarly; geological and tectonic maps were prepared
considering previous studies. Landslides created in vector format were
converted into raster format and overlain with lithological and tectonic
maps, and then the relationship between landslides and lithology-fault
lines were determined. According to these results, 59\% of landslides
occur in Upper Miocene-Pliocene agglomerate and tuff units and 10\% of
them in Eocene carbonate units. According to these data, almost 70\% of
the landslides in the study area occurred in two units. Considering the
relationship between landslides and fault lines 64\% of the landslides
are observed at 0-1000 m distances to the fault lines. As a result,
there is an important relationship between lithological features and
fault lines. The fact that landslides have occurred along the fault
lines in the north of Murat Valley shows that the landslides are
triggered more by earthquakes when compared with those triggered by the
hydro meteorological events.
Koleksiyonlar
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