Year-end Sale % OFF 
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
Highlights
The Brežice Sava River terrace (BSRT, Fig. 1)is an aggradation terrace of the Middle Pleistocene age that is locally exposed along the northern and southern margins of the Krško basin
Ground Penetrating Radar (GPR) is a non-invasive geophysical method designed for shallow subsurface investigations
The x and y coordinates of starting and ending points of the Ground Penetration Radar (GPR) profiles were measured with a portable GPS receiver, while the surface altitude of the points was acquired from the new Slovenian LiDAR relief model (ARSO, 2015) with the vertical accuracy of 15 cm
Summary
The Brežice Sava River terrace (BSRT, Fig. 1)is an aggradation terrace of the Middle Pleistocene age that is locally exposed along the northern and southern margins of the Krško basin. Signal velocity = 0.12 m/ns ly opened road cut (Fig. 3B) This profile contains a high amount of air reflections, the base Quaternary unconformity that corresponds with the BSRT base could still be determined. The depth of this boundary was estimated at 4 m and verified by data from the nearest borehole, located about 100 m northeast from the B1 profile’s north end-point (circle in Fig. 3A), where the same unconformity was found at the depth of 4.1 m (Borehole data archive, 2020). The x and y coordinates of starting and ending points of the GPR profiles were measured with a portable GPS receiver, while the surface altitude of the points was acquired from the new Slovenian LiDAR relief model (ARSO, 2015) with the vertical accuracy of 15 cm
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
