PANGAEA_785120 (Table 2) CT scan measurements of ODP Site 131-808 Soh, Wonn; Byrne, Timothy; Taira, Asahiko; Kono, Atsushi (Table 2) CT scan measurements of ODP Site 131-808 1993 PANGAEA Dataset Supplement to: Soh, Wonn; Byrne, Timothy; Taira, Asahiko; Kono, Atsushi (1993): Computed tomography (CT) scan image analysis of Site 808 cores: structural and physical property implications. In: Hill, IA; Taira, A; Firth, JV; et al. (eds.), Proceedings of the Ocean Drilling Program, Scientific Results, College Station, TX (Ocean Drilling Program), 131, 135-140, https://doi.org/10.2973/odp.proc.sr.131.113.1993 https://doi.pangaea.de/10.1594/PANGAEA.785120 Investigator Wonn Soh Investigator Asahiko Taira Earth Science Sample code/label DEPTH, sediment/rock Attenuation value Attenuation value, standard deviation Sample comment Density, wet bulk Porosity geoscientificInformation 131-808 Composite Core Leg131 DSDP/ODP/IODP sample designation X-ray computed tomography (CT) Joides Resolution 1990-04-04 1990-05-31 Complete 32.35215 32.35215 134.944366666666 134.944366666666 43.2 m (DEPTH, sediment/rock) 1262.6 m (DEPTH, sediment/rock) ODP Ocean Drilling Program unrestricted CC-BY-3.0: Creative Commons Attribution 3.0 Unported English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

Leobener Str.

Bremen Bremen 28359 Germany online 116 data points text/tab-separated-values Taira, Asahiko; Hill, Ian Ashley; Firth, John V; Berner, Ulrich; Brückmann, Warner; Byrne, Timothy; Chabernau, T; Fisher, Andrew T; Foucher, Jean Paul; Gamo, Toshitaka; Gieskes, Joris M; Hyndman, Roy D; Karig, Daniel E; Kastner, Miriam; Kato, Yukihiro; Lallemant, Siegfried J; Lu, Ran; Maltman, Alex J; Moore, Gerald F; Moran, K; Olafsson, Gunnar; Owens, W Brechner; Pickering, Kevin T; Siena, Franca; Taylor, Elliott; Underwood, Michael B; Wilkinson, Clive; Yamano, Makoto; Zhang, J (1992): Sediment deformation and hydrogeology of the Nankai Trough accretionary prism: Synthesis of shipboard results of ODP Leg. Earth and Planetary Science Letters, 109(3-4), 431-450, https://doi.org/10.1016/0012-821X(92)90104-4

X-ray computed tomography (CT) is a promising tool that yields data useful for understanding the fine-scale density structure of partly lithified and tectonically deformed sediments. We conducted 21 CT scans of ODP Leg 131 sediments, including whole-round cores and thin-section chips, obtained from the toe of the Nankai accretionary prism. The samples range from highly deformed pieces from the frontal thrust and décollement to homogeneous and essentially undeformed sediments above the frontal thrust and beneath the décollement. In the CT images, kink-like deformation bands and faults are recognized as obvious bright seams, bands, or stripes with relatively high linear attenuation coefficients. The differences in linear attenuation coefficients relative to the matrix range from 0.021 cm**2/g (kink-like deformation band) to 0.038 cm**2/g (fault). These data suggest a 0.10 g/cm**3 to 0.18 g/cm**3 increase in bulk density within the deformation structures, and they appear to be 13% and 33% more compacted than the nondeformed matrix, respectively. In contrast to the samples from the frontal thrust zone, CT images of the décollement sample exhibit relatively homogeneous textures. The attenuation coefficient of the sample of the décollement indicates bulk density and porosity values of 2.45 g/cm**3 and 18%, respectively. The sample, hence, is approximately 50% more compacted than the sediment outside the décollement zone. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.785120"!

http://en.wikipedia.org/wiki/Porosity Porosity https://doi.org/10.1016/0012-821X(92)90104-4 Sediment deformation and hydrogeology of the Nankai Trough accretionary prism: Synthesis of shipboard results of ODP Leg https://doi.org/10.2973/odp.proc.sr.131.113.1993 Computed tomography (CT) scan image analysis of Site 808 cores: structural and physical property implications https://hdl.handle.net/10013/epic.27914.d001 DSDP/ODP/IODP sample designation https://www-odp.tamu.edu:443/ ODP https://www-odp.tamu.edu:443/resolutn.html Joides Resolution DIF 9.4 2026-08-12