Large serpentinite mud volcanoes form on the overriding plate of the Mariana subduction zone. Fluids from the descending plate hydrate (serpentinize) the forearc mantle and enable serpentinite muds to rise along faults to the seafloor. The seamounts are direct windows into subduction processes at depths far too deep to be accessed by any known technology. Fluid compositions vary with distance from the trench, signaling changes in chemical reactions as temperature and pressure increase. The parageneses of rocks in the mudflows permits us to constrain the physical conditions of the decollement region. If eruptive episodes are related to seismicity, seafloor observatories at these seamounts hold the potential to capture a subduction event and trace the effects of eruption on the biological communities that the slab fluids support, such as extremophile Archaea. The microorganisms that inhabit this high-pH, extreme environment support their growth by utilizing chemical constituents present in the slab fluids. ...

Serpentinite Mud Volcanism: Observations, Processes, and Implications

The Izu-Bonin/Mariana convergent plate margin is characterized by a nonaccretionary forearc with numerous serpentinite seamounts that occur along a 50-km-wide ridge in the Izu-Bonin system and are distributed over a zone as wide as 90 km in the Mariana system. The seamounts are formed primarily by mud volcanism; however, seamounts in the two systems differ in tectonic setting and the materials that form them differ in compositional characteristics. These compositional characteristics suggest that there may be regional differences in the suprasubduction-zone mantle within the Izu-Bonin/Mariana system. In the Izu-Bonin forearc, the seamounts and the ridge on which they formed lie at the top of a wedge of low-velocity material that underlies the outer half of the forearc toe. This wedge is interpreted to be serpentinized forearc peridotite remobilized in response to subduction processes. In the Mariana forearc, seamounts form adjacent to major fault traces scattered over a broad zone in the outer half of the forearc. Studies of pore fluids from serpentinite seamounts show systematic variation in composition related to depth to the slab and to various devolatilization reactions that are controlled by pressure and temperature conditions at the décollement. The serpentinized peridotite materials erupted in mud volcanism indicate that the forearc mantle of the IzuBonin system has experienced a different history of both magmatic and 1Fryer, P.B., and Salisbury, M.H., 2006. Leg 195 synthesis: Site 1200— Serpentinite seamounts of the IzuBonin/Mariana convergent plate margin (ODP Leg 125 and 195 drilling results). In Shinohara, M., Salisbury, M.H., and Richter, C. (Eds.), Proc. ODP, Sci. Results, 195, 1–30 [Online]. Available from World Wide Web: . [Cited YYYYMM-DD] 2Hawaii Institute of Geophysics and Planetology, School of Ocean and Earth Science and Technology, University of Hawaii at Manoa, 1680 East-West Road, Honolulu HI 96821, USA. pfryer@hawaii.edu 3Geological Survey of Canada Atlantic, Bedford Institute of Oceanography, PO Box 1006, Dartmouth NS B2Y-4A2,

Leg 195 Synthesis: Site 1200—Serpentinite Seamounts of the Izu-Bonin/Mariana Convergent Plate Margin (ODP Leg 125 and 195 Drilling Results)

Three-dimensional P- and S-wave velocity structures beneath Japan

Recent Progress in Seafloor Earthquake Observations and Instruments in Japan

The serpentinized peridotites overlying the subducted zones in the Izu-Bonin-Mariana (IBM) arc system have been interpret as the cause of the low-velocity layer identified beneath the IBM froearc, in turn few earthquakes occurred along the plate boundary. Chrysotile, which is a low temperature and highly hydrated phase of serpentine with low frictional strength, has been suggested as the low velocity material in the serpentinized peridotites, besides, brucite is inferred to be likely conducive to stable sliding. However, such idea encounters challenging in our serpentinized peridotites from the southern Mariana forearc, which absent both the above minerals. The presence of talc, which characterized by its weak, low-friction and inherently stable sliding behavior, provides new clue. Here we report the occurrence of talc in serpentinized peridotites collected from the landward trench slope of the southern Mariana forearc. We infer that talc is mainly forming as a result of the reaction of serpentine minerals with silica-saturated fluids released from the subducting slab, and talc also occurs as talc veins sometimes. Due to its unique physical properties, talc may therefore play a significant role in aseismic slip in the IBM subduction zone.

Talc-bearing serpentinized peridotites from the southern Mariana forearc: implications for aseismic character within subduction zones

The seismicity and structure of Izu-Bonin arc mantle wedge at 31°N revealed by ocean bottom seismographic observation

The Izu-Bonin arc system is the subduction zone forming the plate boundary between the downgoing Pacific plate and the overriding Philippine Sea plate. Seismicity along the Izu-Bonin subduction zone is very different in character from other western Pacific subduction zones. Few large earthquakes have occurred at shallow depths (0–100 km), but many large earthquakes have occurred at greater depths (>400 km). Other unique characteristics of this subduction zone include the existence of serpentine seamounts exposed along the forearc slope and the presence of low-velocity (

The Seismicity and Structure of Izu-Bonin Arc Mantle Wedge at 31° N Revealed by Ocean Bottom Seismographic Observation

Handle everyday research tasks with reliable, citation-backed results

Your personal Research Agent to handle research tasks with citation-backed results

Popular Tasks used by Researchers

How can I help with your research?

Meet SciSpace

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Hideki Tatetsu

Author Tools

Chat about Author

Papers

The seismicity and structure of Izu-Bonin arc mantle wedge at 31°N revealed by ocean bottom seismographic observation

The Seismicity and Structure of Izu-Bonin Arc Mantle Wedge at 31° N Revealed by Ocean Bottom Seismographic Observation