Barnes, P. M., Pecher, I. A., LeVay, L.J., Bourlange, S. M., Brunet, M. M. Y., Cardona, S., Clennell, M. B., Cook, A. E., Crundwell, M. P., Dugan, B., Elger, Judith , Gamboa, D., Georgiopoulou, A., Greve, A., Han, S., Heeschen, K. U., Hu, G., Kim, G. Y., Kitajima, H., Koge, H., Li, X., Machado, K. S., McNamara, D. D., Moore, G. F., Mountjoy, J. J., Nole, M. A., Owari, S., Paganoni, M., Petronotis, K. E., Rose, P. S., Screaton, E. J., Shankar, U., Shepherd, C. L., Torres, M. E., Underwood, M. B., Wang, X., Woodhouse, A. D. and Wu, H.-Y. (2019) Site U1517. In: Creeping Gas Hydrate Slides. . Proceedings of the International Ocean Discovery Program, 372A . Texas A&M Univ., College Station, TX, pp. 1-40. DOI 10.14379/iodp.proc.372A.103.2019.

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Abstract

International Ocean Discovery Program (IODP) Site U1517(proposed Site TLC-04B) is located at 38°49.772ʹS, 178°28.557ʹE inthe extensional, creeping part of the Tuaheni Landslide Complex(TLC) (Figure F1; see Figure F2 in the Expedition 372A summarychapter [Barnes et al., 2019a]) (Mountjoy et al., 2014b). HoleU1517A was drilled in a water depth of 725 meters below sea level(mbsl); Holes U1517B and U1517C lie at 720 mbsl. The primarydrilling objective was to log and sample through the landslide massand the gas hydrate stability zone to understand the mechanismsbehind creeping. Therefore, we planned to log the sediment columnto 205 meters below seafloor (mbsf ) using logging-while-drilling(LWD) tools, followed by advanced piston corer (APC) coring, pres-sure coring, and temperature dual pressure probe (T2P) deploy-ments.

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