- Chapter contents
- Abstract
- Introduction
- Data and methodology
-
Results -
Discussion
- Acknowledgments
- References
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Figures
- PDF file
doi:10.2204/iodp.proc.348.205.2017
Data and methodology
Macroscopic observations on cores were made offshore during the expedition. On shore at Kochi Core Center (Japan Agency for Marine-Earth Science and Technology [JAMSTEC], Kanagawa, Japan), a slab of Section 5R-4 was solidified before thin section preparation. It was divided into three pieces, using the same places where drilling mud intruded into the core (see locations of these planes in Fig. F2A). These pieces were coated with epoxy resin and dried. Finally, they were cut parallel to the surface of the half-core and polished. Fourteen extra-large covered petrographic thin sections (around 60 mm × 45 mm) were prepared along the whole core section. These latter thin sections were studied with an optical microscope at Granada University (Spain).
It must be stressed that the description of the fault breccia includes only the structures due to tectonic deformation. The criteria for the differentiation of drilling-induced structures from tectonic ones are fully described in Keren and Kirkpatrick (2016).