Strukturna analiza i interpretacija tektonske evolucije istočnog dijela Savske depresije

master's thesis

• Title: Strukturna analiza i interpretacija tektonske evolucije istočnog dijela Savske depresije : diplomski rad
• Title (english): Structural analysis and interpretation of tectonic evolution in the eastern part of Sava depresion : master’s thesis
• Author: David Rukavina
• Mentor: Bruno Tomljenović (mentor)
• Committee member: Bruno Tomljenović
• Committee member: Bruno Saftić
• Committee member: Davor Pavelić
• Granter: University of Zagreb; Faculty of Mining, Geology and Petroleum Engineering; (Department of Geology and Geological Engineering); Zagreb
• Defense date and country: 2015-04-17, Croatia
• Scientific / art field, discipline and subdiscipline: NATURAL SCIENCES; Geology; Geology and Paleontology

Abstract

U ovom radu analizirani su i interpretirani 2D seizmički profili i bušotinski podatci na temelju kojih je
određena geometrija, kinematske značajke i prostorni raspored rasjeda i pratećih struktura u istočnom dijelu
Savske depresije. Seizmički profili i bušotinski podatci, ustupljeni od tvrtke INA Industrija nafte, d.d.
Zagreb, analizirani su primjenom računalnog paketa PetrelTM Seismic to Simulation, pomoću kojeg je
konstruiran strukturni model koji je omogućio izradu strukturnih karata po plohama podloge neogena,
podloge panona i podloge plio-kvartara, trima regionalnim stratigrafskim horizontima koji odražavaju važne
promjene u tektonskoj evoluciji dijela Panonskog bazenskog sustava na području Hrvatske. Rekonstruirane
su i glavne deformacijske strukture koje su prikazane na strukturnim kartama, čiji je postanak interpretiran
tijekom faze otvaranja Savske depresije uslijed regionalne ekstenzije i za vrijeme tektonske inverzije tijekom
pliocena i kvartara. Pomoću strukturnih karata definirano je pet glavnih strukturnih jedinica u istraživanom
području. Homokline Prosare i Motajice dio su magmatsko-metamorfniih kompleksa Prosare i Motajice koji
su inicijalno formirani prije otvaranja Savske depresije. Sinklinale Roždanik i Nova Gradiška nastale su
otvaranjem taložnog prostora Savske depresije u ekstenzijskoj fazi. Strukturna jedinica Novska-Batrina na
karti po podlozi neogenskih naslaga definirana kao homoklina, a na kartama po podlozi panonskih i pliokvartarnih
naslaga kao antiklinala, izdignuta je sustavom reversnih rasjeda pružanja SZ-JI nagiba generalno
prema SI, aktivnih za vrijeme tektonske inverzije. Na temelju interpretiranih podataka napravljen je model
formiranja istraživanog dijela Savske depresije prema kojem je ona stvorena normalnim rubnim rasjedima u
fazi intenzivne ekstenzije, na koju se nastavlja glavna faza zapunjavanja i blažeg normalnog rasjedanja. U
zadnjoj fazi dolazi do snažne inverzije kada reversni rasjedi, uz sjeverni rub depresije, presjecaju prijašnje
normalne rasjede i izdižu podlogu bazena u svojim krovinskim krilima. Inverzija također uzrokuje formiranje
lokalnih „pop-up“ struktura i reaktivaciju ranije nastalih normalnih rasjeda.

Abstract (english)

Abstract: Interpretation of 2D sesmic reflection sections together with well data enabled determination of the
geometry, kinematics and spatial distribution of faults and associated structures in eastern part of Sava
depression. Seismic sections and well data, made available by INA Plc, Zagreb, were analyzed using the
PetrelTM Seismic to Simulation software package. The constructed structural model consists of the strucural
maps - Base Neogene, Base Pannonian and Base Plio-Quaternary, three regional stratigraphic horizons that
represent important changes in tectonic evolution in the Croatian part of Pannonian basin system. Main
deformation structures were also reconstructed. These structures were firstly created during the phase of
opening of the Sava depression, as a result of regional extension and then changed during tectonic inversion
that occured in Pliocene and Quaternary. Five major strucutral units are defined on structural maps. The
Prosara and Motajica homoclines are parts of magmatic-metamorphic complexes of Mt. Prosara and Mt.
Motajica which were initially formed before opening of the Sava depression. The Roždanik and Nova
Gradiška synclines were formed in the extensional phase. Structural unit named Novska-Batrina on the Base
Neogene map is shaped as a homocline while on the Base Pannonian and Base Plio-Quaternry it acquired a
shape of an anticline uplifted by the system of reverse faults. Mentioned faults strike NW-SE generaly and
are inclined to NE, and it is proven that they were active during tectonic inversion. Based on interpreted data
the structural evolution of the eastern part of Sava depression is reconstructed. According to that model,
depression was formed by normal faulting in phase of intensive extension which is followed by main infill of
depresion and mild normal extension. In the last phase, strong inversion occured with reverse faulting along
the northern edge of depression crossing previous normal faults and uplifting the base of basin fill. Inversion
also caused formation of local pop-up structures and reactivation of the pre-existing normal faults.

• Keywords: strukturne karte; Savska depresija; neogen; seizmička interpretacija; tektonska inverzija
• Keywords (english): structural maps; Sava depression; Neogene; seismic interpretation; tectonic inversion
• Language: croatian
• URN:NBN: urn:nbn:hr:169:833692
• Study programme: Title: Geology; Study programme type: university; Study level: graduate; Academic / professional title: magistar/magistra geologije (magistar/magistra geologije)
• Type of resource: Text
• File origin: Born digital
• Access conditions: Open access
• Created on: 2015-12-15 13:42:37