Core-Log-Seismic Integration in Metamorphic Rocks and Its Implication for the Regional Geology: A Case Study for the ICDP Drilling Project COSC-1, Sweden. Elger, J., Berndt, C., Kästner, F., Pierdominici, S., Kück, J., Almqvist, B. S. G., Juhlin, C., & Lorenz, H. Geochemistry, Geophysics, Geosystems, 22(3):e2020GC009376, 2021. _eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1029/2020GC009376![Core-Log-Seismic Integration in Metamorphic Rocks and Its Implication for the Regional Geology: A Case Study for the ICDP Drilling Project COSC-1, Sweden [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Continental collision causes deformation in the crust along shear zones. However, the physical and chemical conditions at which these zones operate and the deformation processes that enable up to hundreds of km of tectonic transport are still unclear because of the depth at which they occur and the challenges in imaging them. Ancient exhumed collision zones allow us to investigate these processes much better, for example at the COSC-1 borehole in the central Scandinavian Caledonides. This study combines data from the COSC-1 borehole with different seismic measurements to provide constraints on the spatial lithological and textural configuration of the Seve Nappe Complex. This is one of the few studies that shows that core-log-seismic integration in metamorphic rocks allows to identify the spatial distribution of major lithological units. Especially gamma ray logs in combination with density data are powerful tools to distinguish between mafic and felsic lithologies in log-core correlation. Our results indicate that reflections along the borehole are primarily caused by compositional rather than textural changes. Reflections in the Seve Nappe Complex are not as distinct as in greater depths but continuous and several of them can be linked to magmatic intrusions, which have been metamorphically overprinted. Their setting indicates that the Seve Nappe Complex consists of the remnants of a volcanic continental margin. Our results suggest that ductile-deformed middle crustal reflectivity is primarily a function of pre-orogenic lithological variations which has to be considered when deciphering mountain building processes.
@article{elger_core-log-seismic_2021,
title = {Core-{Log}-{Seismic} {Integration} in {Metamorphic} {Rocks} and {Its} {Implication} for the {Regional} {Geology}: {A} {Case} {Study} for the {ICDP} {Drilling} {Project} {COSC}-1, {Sweden}},
volume = {22},
issn = {1525-2027},
shorttitle = {Core-{Log}-{Seismic} {Integration} in {Metamorphic} {Rocks} and {Its} {Implication} for the {Regional} {Geology}},
url = {https://onlinelibrary.wiley.com/doi/abs/10.1029/2020GC009376},
doi = {10.1029/2020GC009376},
abstract = {Continental collision causes deformation in the crust along shear zones. However, the physical and chemical conditions at which these zones operate and the deformation processes that enable up to hundreds of km of tectonic transport are still unclear because of the depth at which they occur and the challenges in imaging them. Ancient exhumed collision zones allow us to investigate these processes much better, for example at the COSC-1 borehole in the central Scandinavian Caledonides. This study combines data from the COSC-1 borehole with different seismic measurements to provide constraints on the spatial lithological and textural configuration of the Seve Nappe Complex. This is one of the few studies that shows that core-log-seismic integration in metamorphic rocks allows to identify the spatial distribution of major lithological units. Especially gamma ray logs in combination with density data are powerful tools to distinguish between mafic and felsic lithologies in log-core correlation. Our results indicate that reflections along the borehole are primarily caused by compositional rather than textural changes. Reflections in the Seve Nappe Complex are not as distinct as in greater depths but continuous and several of them can be linked to magmatic intrusions, which have been metamorphically overprinted. Their setting indicates that the Seve Nappe Complex consists of the remnants of a volcanic continental margin. Our results suggest that ductile-deformed middle crustal reflectivity is primarily a function of pre-orogenic lithological variations which has to be considered when deciphering mountain building processes.},
language = {en},
number = {3},
urldate = {2021-12-08},
journal = {Geochemistry, Geophysics, Geosystems},
author = {Elger, Judith and Berndt, Christian and Kästner, Felix and Pierdominici, Simona and Kück, Jochem and Almqvist, Bjarne S. G. and Juhlin, Christopher and Lorenz, Henning},
year = {2021},
note = {\_eprint: https://onlinelibrary.wiley.com/doi/pdf/10.1029/2020GC009376},
keywords = {COSC-1, central Scandinavian Caledonides, core-log-seismic integration},
pages = {e2020GC009376},
}
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