Neotectonic and seismotectonic features of the Pelagonian, Kičevo and Poreč depressions and the surrounding block structures

Pages: 
pp. 49-56
lnstilute for Civil Engineering "Macedonia" Skopje, Republic of Macedonia
Faculty of Mining and Geology Stip, Republic of Macedonia
Faculty of Mining and Geology Stip, Republic of Macedonia
Faculty of Mining and Geology Stip, Republic of Macedonia
lnstilute for Civil Engineering "Macedonia" Skopje, Republic of Macedonia
Abstract: 

The paper presents the lithostratigraphic, neotectonic and seismotectonic characteristics of the Pelagonian, Poreč and Kičevo depressions and the surrounding horsts.
   The area under consideration belongs to two geotectonic regions - the Pelagonian massif and the Western Macedonian zone which have had a complex multiphase geotectonic evolution.
   During the Neotectonic stage, owing to the intense tectonic development, morphostructures of uplift (blockhorsts) and subsidence (depressions-grabens) were formed along reactivated older and newly-developed neotectonic fault structures. The neotectonic fault structures are of various degree of seismic activity. The analysis of data from earthquakes makes possible to distinguish two seismic zones – Kičevo and Bitola, – in which earthquakes with a magnitude of up to 5.5 could be anticipated.

Зл. Илиовски, В. Мирчовски, Г Петров, О. Сnасовски, Ст. Николов. Неотектоническая и сейсмотектоническая характеристика Пелагонийской, Кuчевской и Поречкой деnрессий и окружающих блоковых структур. В работе приведена характеристика нескольких неотектонических депрессий (Пелагонийской, Кичевской и Поречкой), а также – окружающих блоковых структур.
   Исследованный район принадлежит к двум геотектоническим регионам - к Пелагонийскому массиву и к Западной Македонской зоне. Оба региона прошли сложное полифазовое геотектоническое развитие.
   Во время неотектонического периода в результате интенсивных тектонических движений по реактивированным и новообразованным неотектоническим разломам оформились морфоструктуры воздымания (блоки – горсты) и структуры проседания (депрессии – грабены). Неотектонические разломы различаются по степени сейсмической активности. На основании анализа данных по землетрясениям выявлены две сейсмические зоны – зона Кучево и зона Битоля. В связи с ними можно ожидать землетрясения с магнитудом до 5.5 степени.

Keywords: 

seismicity, neotectonic structure

VOLUME 33 (3-4)/December 2003

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia

Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia
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Geological Institute, Bulgarian Academy of Sciences, 1113 Sofia

Faculty of Mining and Geology, Stip, Republic of Macedonia
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Faculty of Mining and Geology, Stip, Republic of Macedonia
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Faculty of Mining and Geology, Stip, Republic of Macedonia
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Faculty of Mining and Geology, Stip, Republic of Macedonia

lnstilute for Civil Engineering "Macedonia" Skopje, Republic of Macedonia
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Faculty of Mining and Geology Stip, Republic of Macedonia
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Faculty of Mining and Geology Stip, Republic of Macedonia
|
Faculty of Mining and Geology Stip, Republic of Macedonia
|
lnstilute for Civil Engineering "Macedonia" Skopje, Republic of Macedonia

Institute of Oceanology, Bulgarian Academy of Sciences, 9000 Varna, RB. 152
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Institute of Oceanology, Bulgarian Academy of Sciences, 9000 Varna, RB. 152

Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 24, Sofia 1113, Bulgaria
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Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 24, Sofia 1113, Bulgaria