Moran, K., Brückmann, Warner, Feeser, Volker and Campanella, R. G. (1993) In-situ stress conditions at Nankai Trough, Site 808. Proceedings of the Ocean Drilling Program: Scientific Results, 131 . pp. 283-291.

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Abstract

Shipboard laboratory index property data, shore-based consolidation tests, and in-situ stress and pore-pressure measurements are used in this study to constrain the stress conditions at ODP Site 808, Nankai Trough. Results of these tests are presented along
with additional intepretations of porosity rebound and permeability. The sediment at Site 808 is highly affected by excess fluid
pressures throughout the sediment column. Excess fluid pressure is severe below the major fault boundary, the decollement. The
in-situ measurement of lateral stresses, which are shallow in the sediment section, confirms that the principal stress direction is
rotated from a "normal" basin-type condition where the principal stress direction is vertical.

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