TY - CPAPER AU - Brown, K.M., Sample, J.C., Even, E., Poeppe, D., Henry, P., Tobin, H.J., Saffer, D.M., Hirose, T., Toczko, S., and Maeda, L. CY - San Francisco, CA DA - 15–19 December 2014 N1 - Abstract H31P-05 PY - 2014 T2 - 2014 American Geophysical Union Fall Meeting TI - Smectite dehydration, membrane filtration, and pore-water freshening in deep ultra-low permeability formations: deep processes in the Nankai Accretionary Wedge UR - https://abstractsearch.agu.org/meetings/2014/FM/H31P-05.html ID - 14816 ER - TY - JOUR AB - Abstract Non-skeletal carbonate grains are classically interpreted to form in shallow, tropical environments. Peloids deposited in deep, subtropical marine conditions are poorly studied. IODP site U1460 on the subtropical Carnarvon Ramp (Southwest Shelf of Australia) recovered a nearly continuous Pliocene to Recent record of outer shelf and slope sediments. The relative abundance of peloids varies between 0% and 67% of the fine to medium sand fraction, and contributes on average ~4% of all grains. The origin and composition of these peloids were investigated using scanning electron microscopy equipped with an energy-dispersive X-ray spectrometer, light microscopy, X-ray diffraction and stable isotope analysis. The peloids have a uniform size and shape and are interpreted as faecal pellets. They are mainly composed of skeletal fragments such as ascidian spicules, planktic foraminifera and sponge spicules in a mud-sized matrix containing abundant coccolith plates. Mineralogical analysis show that the pellets consist of aragonite, calcite and dolomite. The pellets have an identical mineralogical composition and skeletal assemblage as the surrounding matrix, indicating that they have formed in situ. They occur more abundantly during interglacials when the site was situated in deeper waters below the swell wave base, presumably because the pellets were protected from disintegration and therefore available for cementation. The presence of framboidal pyrite within the pellets indicates bacterial sulphate reduction (BSR). The reduction of iron by hydrogen sulphide produced during BSR decreases the pH and likely explains the observed aragonite dissolution. Aragonite dissolution likely increases the alkalinity, and in consequence causes the precipitation of calcite and dolomite cements. It is suggested here that pellets are hardened due to this early cementation close to the sea floor increasing the potential for preservation in the fossil record. AU - Deik, Hanaa AU - Reuning, Lars AU - Petrick, Benjamin AU - Takayanagi, Hideko DO - https://doi.org/10.1002/dep2.64 IS - 2 N1 - https://onlinelibrary.wiley.com/doi/abs/10.1002/dep2.64 PY - 2019 SN - 2055-4877 SP - 348–361 ST - Hardened faecal pellets as a significant component in deep water, subtropical marine environments T2 - The Depositional Record TI - Hardened faecal pellets as a significant component in deep water, subtropical marine environments UR - https://doi.org/10.1002/dep2.64 VL - 5 ID - 7957 ER - TY - JOUR AB - Integrated Ocean Drilling Program (IODP) Expedition 326 was the first preparatory stage of drilling and coring of the main IODP Hole C0002F to the boundary zone between the Philippine Sea and Eurasian Plates in the Nankai accretionary margin, which is one of the main objectives of the Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) complex drilling project. The objectives for this expedition were purely operational, with the goal being installation of the wellhead assembly and drilling and casing the uppermost 800 m of the planned 7 km deep hole. Accordingly, no science party was on board during the expedition and no scientific results are reported. Scientific objectives for the uppermost 1400 m at this site were previously fulfilled during NanTroSEIZE Stage 1 Expeditions 314 and 315. This expedition was scheduled to run from 19 July to 8 August 2010. Delays due to various equipment failures and the loss of a casing string caused the expedition to be extended to 20 August. By that time, Hole C0002F had been drilled to 872.5 meters below seafloor and the hole was lined with successfully cemented 20 inch casing. A corrosion cap was set in preparation for a future return to continue drilling. We confirm that Hole C0002F is now ready for deep riser drilling, currently planned for 2011 to 2013. AU - Expedition 326 Scientists J2 - Affiliation (analytic): University of Wisconsin at Madison, Department of Geology and Geophysics, Madison, WI Corporate Affiliation (monographic): Integrated Ocean Drilling Program, Expedition 326 Scientists Coordinates: N331800 N331801 E1363801 E1363800 Contains 16 references Research Program: IODP Integrated Ocean Drilling Program Document Type: Monograph Bibliographic Level: Monograph Source Note: Preliminary Report (Integrated Ocean Drilling Program), Vol.326, 20p. Publisher: International Ocean Discovery Program, College Station, TX, United States. ISSN: 1932-9423 Copyright Information: GeoRef, Copyright 2020 American Geosciences Institute. GeoRef ID: 2020077174 DOI: 10.2204/iodp.pr.326.2011 KW - Drilling Expedition 326 Geophysical methods Geophysical profiles Geophysical surveys IODP Site C0002 Integrated Ocean Drilling Program Kumano Basin Marine drilling NanTroSEIZE North Pacific Northwest Pacific Pacific Ocean Seismic methods Seismic profiles Surveys West Pacific 20 Geophysics, Applied 30 Engineering Geology LA - English N1 - Kinoshita, Masataka Tobin, Harold Eguchi, Nobuhisa Nielsen, Simon Kanamatsu, Toshiya Kimura, Gaku Moore, Gregory Saffer, Demian Underwood, Michael B. Wheat, Geoff PY - 2011 SN - 1932-9423 ; ST - Expedition 326 Preliminary Report: NanTroSEIZE Stage 3: plate boundary deep riser: top hole engineering T2 - Integrated Ocean Drilling Program Preliminary Report TI - Expedition 326 Preliminary Report: NanTroSEIZE Stage 3: plate boundary deep riser: top hole engineering UR - https://doi.org/10.2204/iodp.pr.326.2011 VL - 326 ID - 4314 ER - TY - CPAPER AU - Huffman, K.A., and Saffer, D.M. CY - San Francisco, CA DA - 15–19 December 2014 PY - 2014 SP - T51A-4580 T2 - 2014 American Geophysical Union Fall Meeting TI - In situ rock strength and far field stress in the Nankai accretionary complex: Integration of downhole data from multiple wells UR - https://abstractsearch.agu.org/meetings/2014/FM/T51A-4580.html ID - 14817 ER - TY - JOUR AB - We present a method to simultaneously constrain both far-field horizontal stress magnitudes (Shmin and SHmax) and in situ rock unconfined compressive strength (UCS), using geophysical logging data from two boreholes located 70 m apart that access the uppermost accretionary prism of the Nankai subduction zone . The boreholes sample the same sediments and are affected by the same tectonic stress field, but were drilled with different annular pressures, thus providing a unique opportunity to refine estimates of both in situ stress magnitudes and rock strength. We develop a forward model to predict the angular width of compressional wellbore failures (borehole breakouts), and identify combinations of SHmax and UCS that best match breakout widths observed in resistivity images from the two boreholes. The method requires knowledge of Shmin, which is defined by leak-off tests conducted during drilling. Our results define a normal to strike-slip stress regime from 900 to 1386 m below seafloor, consistent with observations from seismic and core data. Our analysis also suggests that in situ values of UCS are generally slightly lower that commonly assumed on the basis of published empirical relations between UCS and P-wave velocity. AU - Huffman, K. A. AU - Saffer, D. M. AU - Dugan, B. DA - 2016/07/19 DO - 10.1186/s40623-016-0491-4 IS - 1 PY - 2016 SN - 1880-5981 SP - 123 ST - In situ stress magnitude and rock strength in the Nankai accretionary complex: a novel approach using paired constraints from downhole data in two wells T2 - Earth, Planets and Space TI - In situ stress magnitude and rock strength in the Nankai accretionary complex: a novel approach using paired constraints from downhole data in two wells UR - https://doi.org/10.1186/s40623-016-0491-4 VL - 68 ID - 12032 ER - TY - CPAPER AU - Kimura, T., Araki, E., Mikada, H., Kitada, K., and Kinoshita, M. CY - San Francisco, CA DA - 3–7 December 2012 N1 - Abstract T13A-2575 PY - 2012 T2 - 2012 American Geophysical Union Fall Meeting TI - Application of seismic interferometry to seafloor and subseafloor seismic data acquired in the Nankai Trough subduction zone UR - https://abstractsearch.agu.org/meetings/2012/FM/T13A-2575.html ID - 15085 ER - TY - CHAP A2 - Stein, R., Blackman, D., Inagaki, F., and Larsen, H.-C. (Eds.) AU - Kinoshita, Masataka AU - Kimura, Gaku AU - Saito, Saneatsu CY - Amsterdam J2 - Affiliation (analytic): Japan Agency for Marine-Earth Science and Technology, Kochi Institute for Core Sample Research, Nankoku Affiliation (monographic): Japan Agency for Marine-Earth Science and Technology, Kochi Institute for Core Sample Research, Nankoku, Japan Coordinates: N310000 N330000 E1360000 E1340000 Research Program: IODP Integrated Ocean Drilling Program Document Type: Journal Article Bibliographic Level: Analytic Source Note: Earth and life processes discovered from subseafloor environments; a decade of science achieved by the Integrated Ocean Drilling Program (IODP), edited by Ruediger Stein, Donna K. Blackman, Fumio Inagaki and Hans-Christian Larsen. Developments in Marine Geology, Vol.7, p.641-670. Publisher: Elsevier, Amsterdam, Netherlands. ISSN: 1572-5480. ISBN: 978-0-444-62617-2 Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. GeoRef ID: 2016085369 DOI: 10.1016/B978-0-444-62617-2.00021-9 KW - Asia Cores Decollement Far East Faults Honshu Integrated Ocean Drilling Program Japan Kii Peninsula Kumano Basin Marine sediments NanTroSEIZE Nankai Trough North Pacific Northwest Pacific Pacific Ocean Plate convergence Plate tectonics Sediments Seismicity Subduction zones West Pacific 18 Geophysics, Solid-Earth LA - English PB - Elsevier B.V. PY - 2014 SN - 1572-5480 SP - 641–670 ST - Seismogenic processes revealed through the Nankai Trough Seismogenic Zone Experiments: core, log, geophysics, and observatory measurements T2 - Developments in Marine Geology (Volume 7): Earth and Life Processes Discovered from Subseafloor Environments: A Decade of Science Achieved by the Integrated Ocean Drilling Program (IODP). R. Stein (Series Ed.) TI - Seismogenic processes revealed through the Nankai Trough Seismogenic Zone Experiments: core, log, geophysics, and observatory measurements UR - https://doi.org/10.1016/B978-0-444-62617-2.00021-9 ID - 4649 ER - TY - JOUR AB - The Nankai Trough Seismogenic Zone Experiment (NanTroSEIZE) program is a coordinated, multiexpedition drilling project designed to investigate fault mechanics and seismogenesis along subduction megathrusts through direct sampling, in situ measurements, and long-term monitoring in conjunction with allied laboratory and numerical modeling studies. The fundamental scientific objectives of the NanTroSEIZE drilling project include characterizing the nature of fault slip and strain accumulation, fault and wall rock composition, fault architecture, and state variables throughout the active plate boundary system to a depth of ∼7000 meters below seafloor (mbsf). Integrated Ocean Drilling Program (IODP) Expedition 326 is slated to begin drilling the main ultradeep borehole with "top hole" operations to pilot the hole, set casing to ∼800 mbsf, and install the wellhead to be used in later deep riser drilling at Site C0002. AU - Kinoshita, Masataka AU - Tobin, Harold AU - Eguchi, Nobu AU - Nielsen, Simon J2 - Affiliation (analytic): Japan Agency for Marine-Earth Science Technology, Institute for Research on Earth Evolution, Yokosuka Coordinates: N323000 N333000 E1373000 E1363000 Contains 20 references Research Program: IODP Integrated Ocean Drilling Program Document Type: Monograph Bibliographic Level: Monograph Source Note: Scientific Prospectus (Integrated Ocean Drilling Program), Vol.326, 19p. Publisher: IODP Management International, College Station, TX, United States. ISSN: 1932-9415 Copyright Information: GeoRef, Copyright 2020 American Geosciences Institute. GeoRef ID: 2011004570 URL access: Open access DOI: 10.2204/iodp.sp.326.2010 KW - Asia Boreholes Continental margin Cores Crust Drilling Earthquakes Expedition 326 Far East Fault zones Faults Genesis Geophysical methods Geophysical profiles Geophysical surveys Honshu IODP Site C0002 Integrated Ocean Drilling Program Japan Kii Peninsula Marine drilling Marine sediments NanTroSEIZE Nankai Trough North Pacific Northwest Pacific Oceanic crust Pacific Ocean Planning Plate boundaries Plate tectonics Sediments Seismic methods Seismic profiles Subduction zones Surveys West Pacific 18 Geophysics, Solid-Earth LA - English PY - 2010 SN - 1932-9415 ; ST - NanTroSEIZE Stage 3: plate boundary deep riser: top hole engineering T2 - Integrated Ocean Drilling Program Scientific Prospectus TI - NanTroSEIZE Stage 3: plate boundary deep riser: top hole engineering UR - https://doi.org/10.2204/iodp.sp.326.2010 VL - 326 ID - 4315 ER - TY - JOUR AB - Expedition 326 Ultra Deep Riser Top Hole was the first stage of drilling and coring of the Integrated Ocean Drilling Program (IODP) Hole C0002F to the boundary zone between the Philippine Sea and Eurasian Plates in the Nankai accretionary margin, one of the main objectives of the Nankai Trough SEIsmogenic Zone Experiments (NanTroSEIZE) Complex Drilling Program. The expedition objectives were purely operational, with the goal being installation of the wellhead assembly and drilling and casing the uppermost 800 m of the planned 7-km deep hole. Accordingly, no science party was on board during the expedition, and no scientific results are reported. Scientific objectives for the top 1400 m of this Site were previously fulfilled during NanTroSEIZE Stage 1 Expeditions 314 and 315 (Kinoshita et al., 2009). After a one month operation in July-August 2010, Hole C0002F had been drilled to 872.5 m below sea floor (mbsf), and the hole was lined with cemented-in 20-inch casing. A corrosion cap was set in preparation for return to continue drilling in 2012. We confirm that Hole C0002F is now ready for deep riser drilling to the plate boundary fault zone. AU - Kinoshita, Masataka AU - Tobin, Harold AU - Eguchi, Nobuhisa AU - Nielsen, Simon J2 - Affiliation (analytic): Japan Agency for Marine-Earth Science and Technology, Kochi Core Center, Kochi Affiliation (monographic): Japan Agency for Marine-Earth Science and Technology, Kochi Core Center, Kochi, Japan Coordinates: N331831 N331831 E1363812 E1363812 illus., incl. sects., sketch map Contains 17 references Research Program: IODP Integrated Ocean Drilling Program Document Type: Journal Article Bibliographic Level: Analytic Source Note: Scientific Drilling, Vol.14, p.30-33. Publisher: Integrated Ocean Drilling Program Management International, Sapporo; Washington, DC, International. ISSN: 1816-8957 Copyright Information: GeoRef, Copyright 2020 American Geosciences Institute. GeoRef ID: 2013017869 URL access: Open access DOI: 10.2204/iodp.sd.14.03.2012 KW - Asia Boreholes Continental margin Cores Drilling Expedition 326 Far East Geophysical methods Geophysical profiles Geophysical surveys Honshu IODP Site C0002 Integrated Ocean Drilling Program Japan Kii Peninsula Marine drilling NanTroSEIZE Nankai Trough North Pacific Northwest Pacific Pacific Ocean Plate boundaries Plate tectonics Seismic methods Seismic profiles Subduction zones Surveys Vertical seismic profiles West Pacific 18 Geophysics, Solid-Earth 20 Geophysics, Applied LA - English PY - 2012 SN - 1816-8957 SP - 30–33 ST - IODP Expedition 326 operations: first stage of Nankai Trough plate boundary deep riser drilling T2 - Scientific Drilling TI - IODP Expedition 326 operations: first stage of Nankai Trough plate boundary deep riser drilling UR - https://doi.org/10.2204/iodp.sd.14.03.2012 VL - 14 ID - 4316 ER - TY - CPAPER AU - Song, I., Huepers, A., Olcott, K.A., Saffer, D.M., Dugan, B., and Strasser, M. CY - San Francisco, CA DA - 9–13 December 2013 N1 - Abstract T33F-06 PY - 2013 T2 - 2013 American Geophysical Union Fall Meeting TI - Interpretation of a leak-off test conducted near the bottom of the Kumano Forearc Basin strata at IODP Site C0002 in the Nankai accretionary complex, SW Japan UR - https://abstractsearch.agu.org/meetings/2013/FM/T33F-06.html ID - 14815 ER - TY - CHAP A2 - Stein, R., Blackman, D.K., Inagaki, F., and Larsen, H.-C. (Eds.) AB - In the first decade of the Integrated Ocean Drilling Program (IODP) 2003–2013, drilling expeditions in the Nankai Trough Kumano transect, the Costa Rica Osa Peninsula transect, and the Japan Trench provided great insights into deformation processes in subduction zone forearcs. In pursuit of the IODP's objective of investigating the onset of seismogenic locking and rupture, the overarching aim of all these transects was to drill into plate boundary fault systems, both at shallow, presumed aseismic levels and at greater, presumed seismogenic depths to study faults and their immediate environment. Closely allied objectives included determination of ages of tectonic and stratigraphic events in marginal wedges, elucidation of hydrogeologic and diagenetic processes in these active margins, and monitoring stress conditions and seismic activity. Taken together, important results from this work include the following: (1) Rapid and localized fault slip can sometimes extend all the way to the trench even where hosted in porous, poorly consolidated marine sediments. This may be due to the frictional properties of the shallow fault zone material; (2) Sediment supply can be high in both erosive and accretionary systems, as recorded by sedimentation rates in forearc basins, but the locus and timing of sedimentation in trench versus forearc/slope basin settings can profoundly impact wedge evolution; (3) Observed principal stress orientations are governed by tectonic convergence but relative stress magnitudes exhibit a more complex relationship with tectonics than previously anticipated; and (4) Strong fluid overpressures are not observed in upper and mid-wedge settings although seismic reflection data suggest that elevated pore fluid pressure may play an important role in fault and wedge strength at depth. Finally, long-term borehole observatories installed at the Nankai Trough and Japan Trench are the first steps toward the goal of monitoring these active plate boundary fault systems over time. AU - Tobin, Harold AU - Henry, Pierre AU - Vannucchi, Paola AU - Screaton, Elizabeth CY - New York DO - https://doi.org/10.1016/B978-0-444-62617-2.00020-7 KW - Accretionary wedge megathrust plate boundary fault erosive margin convergent margin fault mechanics forearc basin N1 - https://www.sciencedirect.com/science/article/pii/B9780444626172000207 PB - Elsevier PY - 2014 SN - 1572-5480 SP - 599–640 ST - Subduction zones: structure and deformation history T2 - Developments in Marine Geology (Volume 7): Earth and Life Processes Discovered from Subseafloor Environments: A Decade of Science Achieved by the Integrated Ocean Drilling Program (IODP). R. Stein (Series Ed.) TI - Subduction zones: structure and deformation history UR - https://doi.org/10.1016/B978-0-444-62617-2.00020-7 ID - 9723 ER - TY - CPAPER AU - Tobin, H.J., Kinoshita, M., and IODP Expedition 314/315/316/319/322 Scientists CY - San Francisco, CA DA - 13–17 December 2010 PY - 2010 SP - T13A-2146 T2 - 2010 American Geophysical Union Fall Meeting TI - NanTroSEIZE: sampling and monitoring plate boundary fault processes of the Nankai subduction zone UR - https://abstractsearch.agu.org/meetings/2010/FM/U42A-04.html ID - 16655 ER -