Evidence for Mass Transport Deposits at the IODP JFAST-Site in the Japan Trench

Fink, Hiske G; Strasser, Michael; Römer, Miriam; Kölling, Martin; Ikehara, Ken; Kanamatsu, Toshiya; Dinten, Dominik; Kioka, Arata; Fujiwara, Toshiya; Kawamura, Kazutaka; Kodaira, Shuichi; Wefer, Gerold

doi:10.1007/978-3-319-00972-8_4

Cited by 10 publications

(7 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For example, many nonaccretionary margins contain small frontal prisms of uncertain origins (R. von Huene, Ranero, & Scholl, 2009). Limited ocean drilling results imply that such prisms consist of slope debris derived from inner trench slopes (Fink, Strasser, Römer, Kölling, & Ikehara, 2014;Kimura et al, 1997) or of tectonically pulverized forearc basement rocks (Aubouin & von Huene, 1985). However, these hypotheses have not been sufficiently tested by examination of ancient plate boundary rocks exposed on land.…”

mentioning

confidence: 99%

Material recycling in a sediment‐starved trench recorded in the Early Cretaceous Shiriya accretionary complex, Northeast Japan

et al. 2018

View full text Add to dashboard Cite

Identifying and examining geological processes that have occurred in sediment‐starved trenches of ancient non‐accretionary subduction zones exposed on land are still challenging, because such style of subduction is believed to leave scarce rock records. Our new geological mapping, petrography of coarse clastic rocks, radiolarian and zircon U–Pb dating of the Shiriya accretionary complex in Northeast Japan suggest that the younger parts (Sr1 unit) of the complex formed in a sediment‐starved trench. The key observation is that debris derived from the inner trench slope directly overlies pelagic chert in many sections where trench turbidites are lacking. A significant mass of turbidites occurring in other sections are also considered to represent distal facies of the debrites from the adjacent inner trench slope, rather than normal trench‐fill turbidites directly supplied from the continental landmass. These recycled materials from the inner trench slope comprised an imbricate frontal accretionary wedge, together with pelagic siliceous deposits of ocean floor origin. This accretionary wedge of debrite origin suggests that mass wasting on inner slopes of sediment‐starved trenches does not always result in tectonic erosion (removal of materials from the upper plate), but results in material recycling to reconstruct a new frontal accretionary wedge. The spatial dimensions of the recycling cell may be one of the critical differences between accretionary and non‐accretionary margins. Recycled continental materials transported by turbidites from remote landmasses construct frontal wedges in accretionary margins, whereas mass wasting on adjacent slopes and re‐accretion at the trench recycle continental materials in non‐accretionary margins. The transition from an accretionary to non‐accretionary (i.e. sediment‐starved) trench detected in the Shiriya Complex potentially records tectonic response of the inner trench slope to increased friction along the subduction interface.

show abstract

mentioning

confidence: 99%

Material recycling in a sediment‐starved trench recorded in the Early Cretaceous Shiriya accretionary complex, Northeast Japan

et al. 2018

View full text Add to dashboard Cite

show abstract

“…The MTD was covered by surface sediments consisting of 50 cm of hemipelagic diatomaceous mud. Based on pore‐water geochemistry of the MTD and estimated depositional age of post‐MTD hemipelagic background sediments, submarine landslide that formed the MTD occurred between 700 and 10,000 years ago [ Fink et al ., ]. The lower unit of the present study was generated by younger event, because of detection of excess 210 Pb.…”

Section: Discussionmentioning

confidence: 99%

“…The characteristics of core Dive599-P02 also support the occurrence of a submarine landslide. At JFAST site C0019 (Figure 1b), Fink et al [2014] reported deposition of an MTD following analysis of an 8.7 m long gravity core. The MTD sequence was 8 m long, and composed of mud clasts and a distorted chaotic sediment matrix.…”

Section: Discussionmentioning

confidence: 99%

Small‐scale spatial variation in near‐surface turbidites around the JFAST site near the Japan Trench

Yoshikawa

Kanamatsu

Kasaya

2016

Geochem Geophys Geosyst

Self Cite

View full text Add to dashboard Cite

This paper aims to improve our understanding of the depositional processes associated with turbidites related to recent earthquake events. A series of short sediment cores (ca. 20–30 cm long) were recovered from the landward slope of the Japan Trench around JFAST (Japan Trench Fast Drilling Project) site C0019 by a remotely operated vehicle, KAIKO 7000 II, and the sample sites were accurately located using an LBL (long base line) acoustic navigation system. The properties of the cores were analyzed using visual observations, soft X‐ray radiographs, smear slides, measurement of anisotropy of magnetic susceptibility, and analysis of radioactive elements (134Cs, 137Cs, and excess 210Pb). For the first time, small‐scale (ca. 200–1000 m) spatial variations in recent earthquake‐triggered deep‐sea turbidites, the formation of which was probably linked to the 2011 Tohoku‐oki earthquake, are described. We also examine the submarine landslide that probably generated the sediment unit below the turbidites, which is thought to be an important process in the study area. The spatial distribution and characteristics of the near‐surface seismoturbidite obtained immediately after the earthquake, presented here, will enable precise calibration of offshore evidence of recent earthquakes, and thus facilitate the use of the sedimentary archive for paleoseismic interpretations. Furthermore, although sampling for turbidite seismology on steep slopes has not been widely performed previously, our results suggest that the recent event deposits may be continuously tracked from the slope to the basin using a combination of the present sampling method and conventional large‐scale investigation techniques.

show abstract

“…δ 13 C values of bulk glendonite samples range from −52.4 ‰ to +0.6 ‰ PDB, while δ 18 O values range from −16.6 ‰ to +4.8 ‰ PDB (Derkachev et al, 2007;Geptner et al, 1994Geptner et al, , 2014Qu et al, 2017;Willscroft et al, 2017;Vickers et al, 2018;Morales et al, 2017;Teichert and Luppold, 2013, among others). δ 13 C values of ikaite-derived calcite range from −27.7 ‰ to −14.3 ‰ PDB, while δ 18 O values range from −5.1 ‰ to +1.3 ‰ PDB (Frank et al, 2008). Lastly, δ 13 C values of secondary carbonate cements range from −20.2 ‰ to −3.9 ‰ PDB, while δ 18 O values range from −23.1 ‰ to −6.2 ‰ PDB (Frank et al, 2008;Vasileva et al, 2019; see Fig.…”

Section: Isotopic Composition Of Ikaite and Glendonitementioning

confidence: 96%

“…The first ikaite-derived calcite generation can be overgrown by needle-like or spherulitic calcite cement (e.g., Boggs, 1972;Kaplan, 1979;Huggett et al, 2005;Vickers et al, 2018). Crystals are a yellowish or amber color under the optical microscope with a bright cathodoluminescence (Frank et al, 2008;Teichert and Luppold, 2013, among others). These carbonates are typically Mg-and/or Fe-rich.…”

Section: Mineralogy and Petrologymentioning

confidence: 99%

Database of global glendonite and ikaite records throughout the Phanerozoic

Rogov

Ershova

Vereshchagin

et al. 2021

Earth Syst. Sci. Data

View full text Add to dashboard Cite

Abstract. This database of Phanerozoic occurrences and isotopic characteristics of metastable cold-water calcium carbonate hexahydrate (ikaite; CaCO3⚫6H2O) and their associated carbonate pseudomorphs (glendonites) has been compiled from academic publications, explanatory notes, and reports. Our database including more than 700 occurrences reveals that glendonites characterize cold-water environments, although their distribution is highly irregular in space and time. A significant body of evidence suggests that glendonite occurrences are restricted mainly to cold-water settings; however they do not occur during every glaciation or cooling event of the Phanerozoic. While Quaternary glendonites and ikaites have been described from all major ocean basins, older occurrences have a patchy distribution, which may suggest poor preservation potential of both carbonate concretions and older sediments. The data file described in this paper is available on Zenodo at https://doi.org/10.5281/zenodo.4386335 (Rogov et al., 2020).

show abstract

Evidence for Mass Transport Deposits at the IODP JFAST-Site in the Japan Trench

Cited by 10 publications

References 26 publications

Material recycling in a sediment‐starved trench recorded in the Early Cretaceous Shiriya accretionary complex, Northeast Japan

Material recycling in a sediment‐starved trench recorded in the Early Cretaceous Shiriya accretionary complex, Northeast Japan

Small‐scale spatial variation in near‐surface turbidites around the JFAST site near the Japan Trench

Database of global glendonite and ikaite records throughout the Phanerozoic

Contact Info

Product

Resources

About