Abstract Diagenesis can have a major impact on sedimentary mineralogy. Primary magnetic mineral assemblages can be modified significantly by dissolution or by formation of new magnetic minerals during early or late diagenesis. At International Ocean Discovery Program Site C0023, which was drilled in the protothrust zone of the Nankai Trough during ...
Myriam Kars +8 more
wiley +1 more source
Geotechnical behavior of mudstones from the Shimanto and Boso accretionary complexes, and implications for the Nankai accretionary prism [PDF]
Triaxial shear tests on mudstone samples from the Shimanto Belt and the Boso accretionary complexes (SW Japan and central Japan) were carried out. Pre-exhumation burial depths in the two paleo-accretionary prisms were up to 9,000 m and about 1,000 m for
Behrmann, Jan H. +5 more
core +3 more sources
The First D/V Chikyu IODP Operations: Successful Logging and Coring During NanTroSEIZE Stage 1 Expeditions [PDF]
No abstract available.
S. Kuramoto +4 more
doaj +1 more source
In situ stress magnitude and rock strength in the Nankai accretionary complex: a novel approach using paired constraints from downhole data in two wells [PDF]
We present a method to simultaneously constrain both far-field horizontal stress magnitudes (S hmin and S Hmax) and in situ rock unconfined compressive strength (UCS), using geophysical logging data from two boreholes located 70 m apart that access the ...
Dugan, B., Huffman, K.A., Saffer, D.M.
core +1 more source
Anelastic strain recovery reveals extension across SW Japan subduction zone [PDF]
Sediment dominated convergent margins typically record substantial horizontal shortening often associated with great earthquakes. The convergent margin south of Japan is arguably one of the most extensively investigated margins and previous studies ...
Akito Tsutsumi +35 more
core +1 more source
Insight into the Sealing Capacity of Mudrocks determined using a Digital Rock Physics Workflow [PDF]
Primary objective: To better understand seal capacity in mudrocks and to determine the conditions under which a mudrock seal fails by allowing a non-wetting fluid to percolate.
Bihani, Abhishek +5 more
core +1 more source
P and S wave velocity measurements of water-rich sediments from the Nankai Trough, Japan [PDF]
Acoustic velocities were measured during triaxial deformation tests of silty clay and clayey silt core samples from the Nankai subduction zone (Integrated Ocean Drilling Program Expeditions 315, 316, and 333).
Behrmann, Jan H. +4 more
core +1 more source
Sedimentary inputs to the Nankai subduction zone: The importance of dispersed ash [PDF]
We examine the importance of dispersed volcanic ash as a critical component of the aluminosilicate sediment entering the Nankai Trough, located south of Japan’s island of Honshu, via the subducting Philippine Sea plate.
Kutterolf, Steffen +5 more
core +1 more source
Interpretation of porosity and LWD resistivity from the Nankai accretionary wedge in light of clay physicochemical properties: Evidence for erosion and local overpressuring [PDF]
International audienceIn this study, we used porosity to assess the compaction state of the Nankai accretionary wedge sediments and any implications for stress and pore pressure.
Archie +47 more
core +4 more sources
[1] In situ test of hydraulic fracturing (HF) provides the only way to observe in situ stress magnitudes directly. The maximum and minimum horizontal stresses, SHmax and Shmin, are determined from critical borehole pressures, i.e., the reopening pressure
Boutt, David +21 more
core +1 more source

