Structural geometry and evolution of the Lomre terrace region, Northern North Sea rift
This Master's project was designed for Matej Pokorny who started the Master's program in Earth sciences, UiB, fall 2024. The Master's project is given by the research group Geodynamics and basin studies.
Main content
Project description
The Lomre Terrace 鈥� M氓l酶y Slope area, west of Solund and east of the North Viking Graben-Sogn Graben system and north of the Horda Platform, is located at the location of the major E-W rift transfer zone at 61掳N on the eastern side of the northern North Sea rift. The focus is on the complex fault pattern in this region. The area contains faults with orientations that deviate from the ordinary North Sea trends, particularly a NE-SW trend, and these complexities may to be related to the right-stepping rift transfer zone or to the influence of the M酶re basin to the north.
The goal is to obtain a model for Late Jurassic structural evolution and basin evolution in the Lomre terrace region. When did the different fault populations develop? Do we need to infer a change in extension direction? Are some structures directly linked to the stepover structure in the area? Is there a sequence of faulting where faults with different orientations formed at different times, or did they develop during the same progressive rifting event?
The method is to map out in detailed structural pattern and structural evolution through the late Jurassic rift evolution from seismic data. Interpreted surfaces will be provided as a basis for the work. These would be interpretations by former PhD student Fabian Tillmans and by the advisors. The student will refine these interpretations and do detailed mapping of Top Dunlin, Top Brent Gr., Intra Upper Jurassic, BCU horizons. In addition to general mapping of the selected reflectors, variations in fault trend, orientation and displacement will be studied, and the evolution of depocenters will be studied in selected areas. Relative and absolute age of different fault populations will be constrained through a study of how they interact and how they affect the late Jurassic to early Cretaceous part of the stratigraphy, respectively.
The student will produce structural maps from different times and maps showing fault activities at these times, and the resulting structural history should be a valuable contribution to our general understanding of the rift evolution in this part of the North Sea rift system. Data: The student will use the CGG NVG broadband data that UiB students have been allowed by CGG to use over the past years. Previous interpretations will be available, as mentioned above. Seismic interpretation will be performed in the UiB seismic lab.
Ellipse marks study area
Proposed course plan during the master's degree (60 ECTS)
GEOV251 Videreg氓ende strukturgeologi (10 sp)
GEOV272 Seismisk tolkning (10 sp)
GEOV274 Milj酶 og resevoargeofysikk (10 sp)
GEOV276 Introduksjon til teoretisk seismologi (10 sp)
GEOV300 Akademisk skriving og kommunikasjon i geovitenskap (5 sp)
GEOV361 - Sekvensstratigrafi og "Source-to-sink" (10 sp)
GEOV364 Videreg氓ende bassenganalyse (10 sp)
Field-, lab- and analysis work
Seismic lab