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Title:GPR survey to reveal a possible tectonic tilt of the Brežice Sava River Terrace in the Krško Basin
Authors:ID Zajc, Marjana (Author)
ID Poljak, Marijan (Author)
ID Gosar, Andrej (Author)
Files:.pdf PDF - Presentation file, download (4,88 MB)
MD5: D29C4E26076276A515D3F4BDD298E304
 
Language:English
Typology:1.01 - Original Scientific Article
Organization:Logo GeoZS - Geological Survey of Slovenia
Abstract:It has been supposed that the Brežice Sava River Terrace (BSRT) is tectonically disturbed near the town of Brežice and tilted to the north. To confirm this tectonically induced tilt in a quantitative sense, low-frequency Ground Penetration Radar (GPR) was applied. A total of eight GPR profiles were recorded across the BSRT providing information of the lower boundary of the terrace, which consists of loose to poorly cemented Quaternary gravel, while its Tertiary basement consists of poorly cemented carbonaceous silt (marl). The premise of the study was the assumption that this lithological boundary could be detected by the GPR method. In addition to the upper surface of the BSRT being tilted to the north by 0.18°, GPR profiles also showed a 0.04° difference in the tilt between the upper surface of the terrace and its lower boundary with the basement, which we assigned to the sin-sedimentary tilt. Upon this information, a cumulative tectonically induced dip of the BSRT lower boundary was defined at 0.22°.
Keywords:Brežice Sava River terrace, Krško basin, ground penetrating radar, tectonic tilt, seismic reflection profiling
Publication status:In print
Publication version:Version of Record
Place of publishing:Ljubljana
Publisher:Geološki zavod Slovenije
Year of publishing:2021
Number of pages:15 str.
Numbering:64, 1
PID:20.500.12556/DiRROS-13645 New window
UDC:55
ISSN on article:0016-7789
DOI:10.5474/geologija.2021.001 New window
COBISS.SI-ID:45155331 New window
Publication date in DiRROS:06.01.2021
Views:1837
Downloads:747
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Record is a part of a journal

Title:Geologija
Shortened title:Geologija
Publisher:Geološki zavod Slovenije
ISSN:0016-7789
COBISS.SI-ID:5636866 New window

Document is financed by a project

Funder:ARRS - Slovenian Research Agency
Project number:P1-0011
Name:Regionalna geologija

Licences

License:CC BY 4.0, Creative Commons Attribution 4.0 International
Link:http://creativecommons.org/licenses/by/4.0/
Description:This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
Licensing start date:31.12.2020

Secondary language

Language:Slovenian
Title:Georadarska raziskava za določitev možnega tektonskega nagiba Brežiške terase reke Save v Krški kotlini
Abstract:Domneva se, da je Brežiška terasa reke Save (BSRT) pri mestu Brežice tektonsko porušena oz. nagnjena proti severu. Da bi lahko ta tektonsko induciran nagib tudi kvantitativno določili, smo uporabili nizkofrekvenčni georadar (GPR). Po celotni BSRT je bilo posnetih osem georadarskih profilov, ki dajejo informacije o spodnji meji terase, ki je sestavljena iz slabo cementiranega kvartarnega proda, medtem ko je njena terciarna podlaga sestavljena iz slabo cementiranega karbonatnega melja (laporja). Predpostavka študije je bila domneva, da je z metodo georadarja mogoče zaznati omenjeno litološko mejo. Georadarski profili so poleg tega, da je zgornja površina BSRT nagnjena proti severu za 0,18°, pokazali tudi 0,04° razlike v nagibu med zgornjo površino terase in njeno spodnjo mejo s podlago, kar smo pripisali sin-sedimentacijskemu nagibu. Glede na te podatke je bila kumulativna tektonsko inducirana nagnjenost spodnje meje BSRT določena na 0,22°.
Keywords:Brežiška terasa reke Save, Krška kotlina, georadar, tektonski nagib, seizmično refleksijsko profiliranje


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