Workshop report
| 
26 Apr 2021
Workshop report |
| 26 Apr 2021
| 26 Apr 2021
Workshop report: Exploring deep oceanic crust off Hawai`i
Susumu Umino
CORRESPONDING AUTHOR
School of Geosciences and Civil Engineering, College of Science and
Engineering, Kanazawa University, Kanazawa 920-1192, Japan
Gregory F. Moore
Department of Earth Sciences, University of Hawai`i at Mānoa,
Honolulu, HI 96822, USA
Brian Boston
Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY 10964, USA
Rosalind Coggon
School of Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, Southampton SO14 3ZH, UK
Laura Crispini
Department of Earth, Environment and Life Sciences, University of Genoa, 16126 Genoa, Italy
Steven D'Hondt
Graduate School of Oceanography, University of Rhode Island, Narragansett, RI 02882, USA
Michael O. Garcia
Department of Earth Sciences, University of Hawai`i at Mānoa,
Honolulu, HI 96822, USA
Takeshi Hanyu
Research Institute for Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka 237-0061, Japan
Frieder Klein
Department of Marine Chemistry and Geochemistry, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
Nobukazu Seama
Department of Planetology, Graduate School of Science, Kobe Ocean-Bottom Exploration Center (KOBEC), Kobe University, Kobe 657-8501, Japan
Damon A. H. Teagle
School of Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, Southampton SO14 3ZH, UK
Masako Tominaga
Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA
Mikiya Yamashita
Research Institute for Marine Geodynamics, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka 237-0061, Japan
Institute of Geology and Geoinformation, National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba 305-8567, Japan
Michelle Harris
School of Geography, Earth and Environmental Sciences, University of Plymouth, Plymouth PL4 8AA, UK
Benoit Ildefonse
Geosciences Montpellier, University of Montpellier, CNRS, Montpellier, France
Ikuo Katayama
Department of Earth and Planetary System Sciences, Hiroshima University, Higashi-Hiroshima 739-8526, Japan
Yuki Kusano
Research Institute of Earthquake and Volcano Geology, AIST, Tsukuba 305-8567, Japan
Yohey Suzuki
Department of Earth and Planetary Science, The University of Tokyo, Tokyo 113-0033, Japan
Elizabeth Trembath-Reichert
School of Earth and Space Exploration, Arizona State University, Tempe, AZ 85287-6004, USA
Yasuhiro Yamada
Mantle Drilling Promotion Office, Institute for Marine-Earth Exploration and Engineering (MarE3), JAMSTEC, Yokohama 236-0001, Japan
Natsue Abe
Mantle Drilling Promotion Office, Institute for Marine-Earth Exploration and Engineering (MarE3), JAMSTEC, Yokohama 236-0001, Japan
Nan Xiao
Mantle Drilling Promotion Office, Institute for Marine-Earth Exploration and Engineering (MarE3), JAMSTEC, Yokohama 236-0001, Japan
Mantle Drilling Promotion Office, Institute for Marine-Earth Exploration and Engineering (MarE3), JAMSTEC, Yokohama 236-0001, Japan
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Tomoaki Morishita, Susumu Umino, Jun-Ichi Kimura, Mikiya Yamashita, Shigeaki Ono, Katsuyoshi Michibayashi, Masako Tominaga, Frieder Klein, and Michael O. Garcia
Sci. Dril., 26, 47–58, https://doi.org/10.5194/sd-26-47-2019, https://doi.org/10.5194/sd-26-47-2019, 2019
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The architecture, formation, and modification of oceanic plates are fundamental to our of understanding key geologic processes of the Earth. Geophysical surveys were conducted around a site near the Hawaiian Islands (northeastern Hawaiian North Arch region). This workshop report describes scientific targets for 2 km deep ocean drilling in the Hawaiian North Arch region in order to provide information about the lower crust from unrecovered age and spreading rate gaps in previous ocean drillings.
Americus Perez, Susumu Umino, Graciano P. Yumul Jr., and Osamu Ishizuka
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The occurrence of boninite in the northern Zambales ophiolite is reported. Boninite is a relatively rare high-magnesium andesite that is intimately associated with early arc volcanism and the initiation of subduction zones. Taken as a whole, the geological and geochemical characteristics of Zambales and Izu-Ogasawara–Mariana forearc volcanic sequences enables a refined geodynamic reconstruction of subduction initiation.
Sune G. Nielsen, Frieder Klein, Horst R. Marschall, Phillip A. E. Pogge von Strandmann, and Maureen Auro
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Magnesium isotope ratios of arc lavas have been proposed as a proxy for serpentinite subduction, but uncertainties remain regarding their utility. Here we show that bulk serpentinite Mg isotope ratios are identical to the mantle, whereas the serpentinite mineral brucite is enriched in heavy Mg isotopes. Thus, Mg isotope ratios may only be used as serpentinite subduction proxies if brucite is preferentially mobilized from the slab at pressures and temperatures within the arc magma source region.
Silvia Fornasaro, Paola Comodi, Laura Crispini, Sandro Zappatore, Azzurra Zucchini, and Pietro Marescotti
Eur. J. Mineral., 35, 1091–1109, https://doi.org/10.5194/ejm-35-1091-2023, https://doi.org/10.5194/ejm-35-1091-2023, 2023
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Using an innovative multi-analytical approach, we investigated the trace elements composition of spinel-group minerals in different ultramafic rocks from the Voltri Massif (Central Liguria, NW Italy). The knowledge of the trace elements within these minerals has an interesting implication both in petrological, mineralogical, and geochemical studies as well as environmental fields, since these elements can be potentially toxic and released into the environment during weathering processes.
Mathieu Rospabé, Fatma Kourim, Akihiro Tamura, Eiichi Takazawa, Manolis Giampouras, Sayantani Chatterjee, Keisuke Ishii, Matthew J. Cooper, Marguerite Godard, Elliot Carter, Natsue Abe, Kyaw Moe, Damon A. H. Teagle, and Oman Drilling Project “ChikyuOman2018 Leg 3” Science
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Sci. Dril., 30, 75–99, https://doi.org/10.5194/sd-30-75-2022, https://doi.org/10.5194/sd-30-75-2022, 2022
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During ChikyuOman2018 Leg3, we adapted a sample preparation and analytical procedure in order to analyse (ultra-)trace element concentrations using the D/V Chikyu on-board instrumentation. This dry (acid-free) and safe method has been developed for the determination of 37 elements (lowest reachable concentrations: 1–2 ppb) in igneous rocks from the oceanic lithosphere and could be adapted to other materials and/or chemicals of interest in the course of future ocean drilling operations.
Valentin Basch, Martyn R. Drury, Oliver Plumper, Eric Hellebrand, Laura Crispini, Fabrice Barou, Marguerite Godard, and Elisabetta Rampone
Eur. J. Mineral., 33, 463–477, https://doi.org/10.5194/ejm-33-463-2021, https://doi.org/10.5194/ejm-33-463-2021, 2021
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This paper investigates the possibility for melts to migrate within extensively deformed crystals and assesses the impact of this intracrystalline melt percolation on the chemical composition of the deformed crystal. We here document that the presence of melt within a crystal greatly enhances chemical diffusive re-equilibration between the percolating melt and the mineral and that such a process occurring at crystal scale can impact the large-scale composition of the oceanic lithosphere.
Arianne J. Petley-Ragan, Oliver Plümper, Benoit Ildefonse, and Bjørn Jamtveit
Solid Earth, 12, 959–969, https://doi.org/10.5194/se-12-959-2021, https://doi.org/10.5194/se-12-959-2021, 2021
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Earthquakes cause rapid deformation that has long-term effects on the Earth's crust. We studied the most abundant mineral, feldspar, in the vicinity of an earthquake to unravel its deformation history. With microscopy, we found internal nm-scale structures that indicate a history of high stress and destruction of atomic structure. This was quickly followed by high temperature and fluid introduction within seconds. Our findings illustrate the intense conditions imposed on rocks by earthquakes.
Hanaya Okuda, Ikuo Katayama, Hiroshi Sakuma, and Kenji Kawai
Solid Earth, 12, 171–186, https://doi.org/10.5194/se-12-171-2021, https://doi.org/10.5194/se-12-171-2021, 2021
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Serpentinite, generated by the hydration of ultramafic rocks, is thought to be related to slow earthquakes at the subduction plate interface in the mantle wedge. We conducted friction experiments on brucite, one of the components of serpentinite, and found that wet brucite exhibits low and unstable friction under low effective normal stress conditions. This result suggests that wet brucite may be key for slow earthquakes at the subduction plate interface in a hydrated mantle wedge.
Yusuke Kubo, Fumio Inagaki, Satoshi Tonai, Go-Ichiro Uramoto, Osamu Takano, Yasuhiro Yamada, and the Expedition 910 Shipboard Scientific Party
Sci. Dril., 27, 25–33, https://doi.org/10.5194/sd-27-25-2020, https://doi.org/10.5194/sd-27-25-2020, 2020
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The Chikyu Shallow Core Program (SCORE) has been started to provide more opportunities for scientific ocean drilling of shallow boreholes (up to 100 m) during a short-term expedition. The proposal flow is a simplified version of that of the International Ocean Discovery Program (IODP). Although there are several limitations for a SCORE project, the opportunity to retrieve 100 m of continuous core samples will be of interest for the scientific ocean drilling community in multiple disciplines.
Tomoaki Morishita, Susumu Umino, Jun-Ichi Kimura, Mikiya Yamashita, Shigeaki Ono, Katsuyoshi Michibayashi, Masako Tominaga, Frieder Klein, and Michael O. Garcia
Sci. Dril., 26, 47–58, https://doi.org/10.5194/sd-26-47-2019, https://doi.org/10.5194/sd-26-47-2019, 2019
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The architecture, formation, and modification of oceanic plates are fundamental to our of understanding key geologic processes of the Earth. Geophysical surveys were conducted around a site near the Hawaiian Islands (northeastern Hawaiian North Arch region). This workshop report describes scientific targets for 2 km deep ocean drilling in the Hawaiian North Arch region in order to provide information about the lower crust from unrecovered age and spreading rate gaps in previous ocean drillings.
Christian Berndt, Sverre Planke, Damon Teagle, Ritske Huismans, Trond Torsvik, Joost Frieling, Morgan T. Jones, Dougal A. Jerram, Christian Tegner, Jan Inge Faleide, Helen Coxall, and Wei-Li Hong
Sci. Dril., 26, 69–85, https://doi.org/10.5194/sd-26-69-2019, https://doi.org/10.5194/sd-26-69-2019, 2019
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The northeast Atlantic encompasses archetypal examples of volcanic rifted margins. Twenty-five years after the last ODP leg on these volcanic margins, the reasons for excess melting are still disputed with at least three competing hypotheses being discussed. We are proposing a new drilling campaign that will constrain the timing, rates of volcanism, and vertical movements of rifted margins.
Mathieu Soret, Philippe Agard, Benoît Ildefonse, Benoît Dubacq, Cécile Prigent, and Claudio Rosenberg
Solid Earth, 10, 1733–1755, https://doi.org/10.5194/se-10-1733-2019, https://doi.org/10.5194/se-10-1733-2019, 2019
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This study sheds light on the mineral-scale mechanisms controlling the progressive deformation of sheared amphibolites from the Oman metamorphic sole during subduction initiation and unravels how strain is localized and accommodated in hydrated mafic rocks at high temperature conditions. Our results indicate how metamorphic reactions and pore-fluid pressures driven by changes in pressure–temperature conditions and/or water activity control the rheology of mafic rocks.
Elmar Albers, Wolfgang Bach, Frieder Klein, Catriona D. Menzies, Friedrich Lucassen, and Damon A. H. Teagle
Solid Earth, 10, 907–930, https://doi.org/10.5194/se-10-907-2019, https://doi.org/10.5194/se-10-907-2019, 2019
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To understand the fate of carbon in subducted oceanic sediments and crust, we studied carbonate phases in rocks from the Mariana subduction zone. These show that carbon is liberated from the downgoing plate at depths less than 20 km. Some of the carbon is subsequently trapped in minerals and likely subducts to greater depths, whereas fluids carry the other part back into the ocean. Our findings imply that shallow subduction zone processes may play an important role in the deep carbon cycle.
Andrzej Górszczyk, Stéphane Operto, Laure Schenini, and Yasuhiro Yamada
Solid Earth, 10, 765–784, https://doi.org/10.5194/se-10-765-2019, https://doi.org/10.5194/se-10-765-2019, 2019
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In order to broaden our knowledge about the deep lithosphere using seismic methods, we develop leading-edge imaging workflows integrating different types of data. Here we exploit the complementary information carried by seismic wavefields, which are fundamentally different in terms of acquisition setting. We cast this information into our processing workflow and build a detailed model of the subduction zone, which is subject to further geological interpretation.
Robert McKay, Neville Exon, Dietmar Müller, Karsten Gohl, Michael Gurnis, Amelia Shevenell, Stuart Henrys, Fumio Inagaki, Dhananjai Pandey, Jessica Whiteside, Tina van de Flierdt, Tim Naish, Verena Heuer, Yuki Morono, Millard Coffin, Marguerite Godard, Laura Wallace, Shuichi Kodaira, Peter Bijl, Julien Collot, Gerald Dickens, Brandon Dugan, Ann G. Dunlea, Ron Hackney, Minoru Ikehara, Martin Jutzeler, Lisa McNeill, Sushant Naik, Taryn Noble, Bradley Opdyke, Ingo Pecher, Lowell Stott, Gabriele Uenzelmann-Neben, Yatheesh Vadakkeykath, and Ulrich G. Wortmann
Sci. Dril., 24, 61–70, https://doi.org/10.5194/sd-24-61-2018, https://doi.org/10.5194/sd-24-61-2018, 2018
Nan Xiao, Naokazu Ahagon, Yusuke Kubo, and Hajimu Morioka
Sci. Dril., 24, 51–59, https://doi.org/10.5194/sd-24-51-2018, https://doi.org/10.5194/sd-24-51-2018, 2018
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In this paper, we summarize the central points of the Nagoya Protocol on access and benefit-sharing arising from the utilization of genetic resources and discuss how it relates to ocean drilling research. We also address the challenges faced by ocean drilling in complying with this international convention. We hope this article will help principal investigators, researchers and also science operators to acquire the knowledge to smoothly manage drilling programs for deep biosphere research.
Americus Perez, Susumu Umino, Graciano P. Yumul Jr., and Osamu Ishizuka
Solid Earth, 9, 713–733, https://doi.org/10.5194/se-9-713-2018, https://doi.org/10.5194/se-9-713-2018, 2018
Short summary
Short summary
The occurrence of boninite in the northern Zambales ophiolite is reported. Boninite is a relatively rare high-magnesium andesite that is intimately associated with early arc volcanism and the initiation of subduction zones. Taken as a whole, the geological and geochemical characteristics of Zambales and Izu-Ogasawara–Mariana forearc volcanic sequences enables a refined geodynamic reconstruction of subduction initiation.
Christiane Uhlig, John B. Kirkpatrick, Steven D'Hondt, and Brice Loose
Biogeosciences, 15, 3311–3329, https://doi.org/10.5194/bg-15-3311-2018, https://doi.org/10.5194/bg-15-3311-2018, 2018
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To improve global budgets of the greenhouse gas methane, we studied methane consumption in sea-ice-covered Arctic seawater. The microbes using methane were present in abundances < 1 % in the seawater and sea ice. They consumed methane at rates increasing with increasing methane concentrations. In addition, differences in the methane concentrations and in the types of microbes between the ice and water indicate different microbial or physical processes in the two environments.
Anne-Marie Boullier, Odile Robach, Benoît Ildefonse, Fabrice Barou, David Mainprice, Tomoyuki Ohtani, and Koichiro Fujimoto
Solid Earth, 9, 505–529, https://doi.org/10.5194/se-9-505-2018, https://doi.org/10.5194/se-9-505-2018, 2018
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The paper describes microstructures in granitic rocks located 50 m away from the Nojima fault in Japan. Although macroscopically undeformed, the sample displays evidence for intense dynamic damage at the microscopic scale. Elastic strain and high residual stresses stored in quartz grains suggest that they were produced by propagating rupture fronts associated with M6 to M7 earthquakes and contributed to the widening of the damaged fault zone along the Nojima fault during the Paleocene.
Fumio Inagaki, Kai-Uwe Hinrichs, Yusuke Kubo, and the IODP Expedition 337 Scientists
Sci. Dril., 21, 17–28, https://doi.org/10.5194/sd-21-17-2016, https://doi.org/10.5194/sd-21-17-2016, 2016
H. J. Mills, J. de Leeuw, K.-U. Hinrichs, F. Inagaki, and J. Kallmeyer
Sci. Dril., 20, 59–65, https://doi.org/10.5194/sd-20-59-2015, https://doi.org/10.5194/sd-20-59-2015, 2015
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Proceedings and results are presented from the Seoul 2014 Advancing Subsurface Biosphere and Paleoclimate Research workshop. Participants discussed past and present directions of IODP and ICDP subsurface research, including efforts with DCO and IMPRESS. Discussions led to the formation of a level-based communication system with the goal of improving communication and expectations between all drilling disciplines. The production of a biology-themed handbook to guide surface research is planned.
Y. Kubo, Y. Mizuguchi, F. Inagaki, and K. Yamamoto
Sci. Dril., 17, 37–43, https://doi.org/10.5194/sd-17-37-2014, https://doi.org/10.5194/sd-17-37-2014, 2014
G. F. Moore, K. Kanagawa, M. Strasser, B. Dugan, L. Maeda, S. Toczko, and the IODP Expedition 338 Scientific Party
Sci. Dril., 17, 1–12, https://doi.org/10.5194/sd-17-1-2014, https://doi.org/10.5194/sd-17-1-2014, 2014
D. de Beer, M. Haeckel, J. Neumann, G. Wegener, F. Inagaki, and A. Boetius
Biogeosciences, 10, 5639–5649, https://doi.org/10.5194/bg-10-5639-2013, https://doi.org/10.5194/bg-10-5639-2013, 2013
Related subject area
Location/Setting: Deep sea | Subject: Geophysics/Seismology | Geoprocesses: Tectonic processes
IODP workshop: Core-Log Seismic Investigation at Sea – Integrating legacy data to address outstanding research questions in the Nankai Trough Seismogenic Zone Experiment
Anna Cerchiari, Rina Fukuchi, Baiyuan Gao, Kan-Hsi Hsiung, Dominik Jaeger, Shunya Kaneki, Jonas Keller, Gaku Kimura, Szu-Ting Kuo, Gaël Lymer, Tatiana Maison, Ginta Motohashi, Christine Regalla, Drake Singleton, and Suguru Yabe
Sci. Dril., 24, 93–107, https://doi.org/10.5194/sd-24-93-2018, https://doi.org/10.5194/sd-24-93-2018, 2018
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Subduction zones can potentially generate disastrous earthquakes and tsunamis in populated coastal areas. This report summarizes the research activity of a team of 14 early-career scientists who met during IODP Expedition 380 onboard D/V Chikyu (January–February 2018). The goal of this Core-Log-Seismic Integration at Sea workshop was to leverage IODP archives to address the mechanisms of tsunamigenic earthquakes at one of the most active subduction zones offshore southwestern Japan.
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