Correlation of core and downhole seismic velocities in high-pressure metamorphic rocks: a case study for  the COSC-1 borehole, Sweden

Kästner, Felix; Pierdominici, Simona; Elger, Judith; Zappone, Alba; Kück, Jochem; Berndt, Christian

doi:https://doi.org/10.5194/se-11-607-2020

Articles | Volume 11, issue 2

Solid Earth, 11, 607–626, 2020

https://doi.org/10.5194/se-11-607-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Solid Earth, 11, 607–626, 2020

https://doi.org/10.5194/se-11-607-2020

© Author(s) 2020. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 11, issue 2

Research article 23 Apr 2020

Research article | 23 Apr 2020

Correlation of core and downhole seismic velocities in high-pressure metamorphic rocks: a case study for the COSC-1 borehole, Sweden

Felix Kästner et al.

Data sets

COSC-1 operational report - Operational data sets (V. 1.2) H. Lorenz, J.-E. Rosberg, C. Juhlin, L. Bjelm, B. Almqvist, T. Berthet, R. Conze, D. G. Gee, I. Klonowska, C. Pascal, K. Pedersen, N. Roberts, and C. Tsang https://doi.org/10.5880/ICDP.5054.002

Short summary

Knowledge about physical properties at depth is crucial to image and understand structures linked with orogenic processes. We examined seismic velocities from core and downhole data from the COSC-1 borehole, Sweden, and calibrated our results with laboratory measurements on core samples. Despite a strong mismatch between the core and downhole velocities due to microcracks, mafic units are resolved at all scales, while at sample scale, strong seismic anisotropy correlates with the rock foliation.