In:
Türk Coğrafya Dergisi, Turkish Geograpical Review, , No. 75 ( 2020-12-31), p. 107-118
Abstract:
Malatya Fault (MF) is a 140 km-long sinistral structure, which strikes of about N20°E in the most eastern parts the Central Anatolia ‘ova’ Province. The MF is made of five geometric segments that have distinct deformation properties. I defined a total of 27 drainage basins (H01 to H27) along with this tectonic structure and applied the basic morphometric indices, such as hypsometry (HI), concavity and normalised steepness (θ, ksn) and channel profile integral analyses (χ) to quantify the evolution of the landscape along the fault. The results of this study represent that the northernmost segment, FS1, and the surrounding region are strongly shaped under the effect of the vertical motions. Further to the south, the drainage basins the FS2 and FS3 relatively display moderate values, except the H10 that is located at the extensional step-over boundary between these two segments. Morphometric values suggest a balance between tectonics and erosion for the northern and southern sections of the FS3, whereas The HI values with lower than 0.3 suggest a dominant erosion for its central parts. My analyses along two sub-parallel segments, FS4 and FS5, also point a balance between erosional and tectonic forces with amoderate to low HI and ksn values. In addition to quantification of the vertical motions, I tried to determine the successive uplifting and quiescence periods by using the channel profile integral analyses (χ). The estimated series of uplifting and quiescence periods well correlate with terrace formations, which are observed in the field. The study along the MF shows that morphometric analyses are important tools, particularly where there is none or limited field-based geomorphological and/or geological data. In this study, my results do not provide information only for the evolution of the landscape along the MF, but it also shows a potential for similar intra-plate settings in the earth.
Type of Medium:
Online Resource
ISSN:
1302-5856
Language:
Unknown
Publisher:
Turkish Geograpical Review
Publication Date:
2020
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