Tracking the redox history and nitrogen cycle in the pelagic Panthalassic deep ocean in the Middle Triassic to Early Jurassic: Insights from redox-sensitive elements and nitrogen isotopes

Fujisaki, Wataru; Sawaki, Yusuke; Yamamoto, Shinji; Sato, Terukazu; Nishizawa, Manabu; Windley, Brian F.; Maruyama, Shigenori

doi:10.1016/j.palaeo.2016.01.039

Cited by 37 publications

(32 citation statements)

References 163 publications

(266 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Wignall et al () report dysoxic conditions during the Anisian by the measurements of the pyrite particles with the sparse samplings in this section. Furthermore, a result of molybdenum–uranium covariation from another Middle Triassic section in the Inuyama area (Section M; Fujisaki et al, ) suggests that the euxinic, anoxic, and dysoxic conditions developed frequently during the middle Anisian ( T. coronata radiolarian zone), which is consistent with the redox record established here.…”

Section: Discussionsupporting

confidence: 87%

“…Grasby, Beauchamp, Embry, & Sanei, ; Huang, Chen, Wignall, & Zhao, ; Lau et al, ; Song et al, ; Tian et al, ; Wignall et al, ) have revealed that the three major anoxic events occurred in the Early Triassic (late Changhsingian–early Dienerian, Smithian–early Spathian and middle Spathian). In addition to the Early Triassic anoxia, the early Middle Triassic (Anisian) anoxic events are recognized and discussed in Japan and South China (Fujisaki et al, ; Huang et al, ; Kubo, Isozaki, & Matsuo, ; Song et al, ; Sugitani & Mimura, ; Wignall et al, ). These studies suggest that the anoxic interval was not restricted to the PTB, but had a much longer duration, until the Anisian (~ 10 Myr of the Triassic).…”

Section: Introductionmentioning

confidence: 99%

“…Spathian). In addition to the Early Triassic anoxia, the early Middle Triassic (Anisian) anoxic events are recognized and discussed in Japan and South China (Fujisaki et al, 2016;Huang et al, 2017;Kubo, Isozaki, & Matsuo, 1996;Song et al, 2012;Sugitani & Mimura, 1998;Wignall et al, 2010). These studies suggest that the anoxic interval was not restricted to the PTB, but had a much longer duration, until the Anisian (~10 Myr of the Triassic).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Paleoenvironmental reconstruction for termination stage of Superanoxia in Middle Triassic (Anisian) sedimentary sequence of the Mino belt, central Japan

Soda

Onoue

2018

Island Arc

View full text Add to dashboard Cite

Superanoxia across the Permian/Triassic boundary, which is a long period of oceanic anoxia from the late Middle Permian to the early Middle Triassic, has been recognized and debated well in the context of the end Permian mass extinction. However, few studies have focused on the Middle Triassic anoxia because of limited application of geochemical proxies. To reconstruct paleoenvironmental changes during the termination stage of Superanoxia, various geochemical proxies were applied to chemical compositions of the Middle Triassic (Anisian) bedded chert sequence in the Mino belt, Japan, which accumulated in a deep seafloor environment in a low‐ to mid‐latitude zone of the Panthalassa Ocean. Three anoxic events were identified by statistically robust geochemical proxies during the middle Anisian. Degrees of calibrated‐chemical weathering intensity show higher values during these anoxic events, suggesting that the intensified continental weathering was a trigger mechanism for the oceanic anoxic events in the middle Anisian. Furthermore, our data indicate that the termination of Superanoxia in the Panthalassa Ocean was associated with a gradual decrease in continental weathering rates during the middle to late Anisian.

show abstract

Section: Discussionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

See 1 more Smart Citation

Paleoenvironmental reconstruction for termination stage of Superanoxia in Middle Triassic (Anisian) sedimentary sequence of the Mino belt, central Japan

Soda

Onoue

2018

Island Arc

View full text Add to dashboard Cite

show abstract

“…25 , Wakita, 1988Wakita, 1988Hori, 1990;Kimura and Hori, 1993 Fujinaga et al, 2006b). Hori, 1997;Kuroda et al, 2010;Fujisaki et al, 2016Fig. 26 Komuro et al, 1997Komuro and Wakita, 2005 Ni Co Cu Zn U Cr Mo As Tl V Cr Mn Fe Ba W Komuro and Wakita, 2005 Ni Co Cu Zn Komuro and Wakita (2005) and .…”

Section: Figs 11 24mentioning

confidence: 99%

日本列島付加体中に胚胎する古海洋底で生成した鉱床

Nozaki

Fujinaga

Kato

2018

Jour. Geol. Soc. Japan

View full text Add to dashboard Cite

Basement rocks of the Japanese islands consist mainly of accretionary complexes younger than ca. Ma. Various types of stratiform and/or massive ore deposits that formed on a paleo-seafloor are hosted within the Japanese accretionary complexes. In the present study, we review recent progress on metallogenetic research and outline unsolved problems related to these types of deposits, such as the Besshi-type sulfide deposits, bedded ferromanganese deposits, and bedded manganese deposits related/unrelated to greenstone. Besshitype deposits within the Sanbagawa Belt formed by vigorous hydrothermal activity at a pelagic mid-ocean ridge during the Late Jurassic, and sulfide ore was preserved by the concomitant Late Jurassic Ocean Anoxic Event. Besshi-type deposits, which are closely associated with in-situ greenstone in the Northern Shimanto Belt, formed by ridge subduction during the Late Cretaceous. Certain aspects of the genesis of other Besshi-type deposits in the mélange zone of the Northern Shimanto and Chichibu Belts remain unresolved, although the Tsuchikura deposit occurs as an olistolith. Bedded ferromanganese deposits, so-called umber deposits, are derived from hydrothermal sediments at the periphery of the mid-ocean ridge, whereas bedded manganese deposits closely associated with greenstones were originally produced as hydrothermal sediments around seamounts. Bedded manganese deposits that occur within pelagic chert sequences without greenstone are considered to be formed by drastic changes in the redox state of deep water due to the influx of oxic and silicapoor surface seawater into anoxic and high-manganese stagnant deep water. However, whether bedded manganese deposits without greenstone are hydrothermal or hydrogenous in origin remains controversial. Although the problems are complex, future multidisciplinary research should clarify many of the unsolved questions related to metallogenesis.

show abstract

“…Conodont and radiolarian biostratigraphy typically provide exceptional age control. Numerous recent papers published on the Permian to Jurassic radiolarian chert record in Japan document the following the change in oxygenation level of seawater during the Permian/Triassic and Triassic/Jurassic mass extinction events and the Toarcian anoxic event, which was a critical time for the biosphere (Kakuwa, 2008;Takahashi et al, 2009Takahashi et al, , 2014Takahashi et al, , 2015Wignall et al, 2010;Gr€ ocke et al, 2011;Sato et al, 2011;Sakuma et al, 2012;Sano et al, 2012;Ikeda & Hori, 2014;Ikeda et al, 2015;Fujisaki et al, 2016), an impact event in the Upper Triassic (Onoue et al, 2012;Sato et al, 2013Sato et al, , 2016, the astronomical cycles during the Triassic (Ikeda & Tada, 2013) and the climate change in continental areas during the Triassic (Nakada et al, 2014). These studies indicate that radiolarian chert is an excellent recorder of global events.…”

Section: Introductionmentioning

confidence: 99%

Petrography of Late Cambrian to Middle Ordovician radiolarian chert in Kazakhstan with special reference to the emergence of benthic animals in the pelagic realm

Kakuwa

Nikitina

2020

Sedimentology

View full text Add to dashboard Cite

Upper Cambrian to Middle Ordovician radiolarian chert successions from Kazakhstan were studied to clarify the history of the emergence of benthic animals in ocean floor sediments. Radiolarian tests and clay were deposited for a period of 30 Myr without experiencing an influx of continent‐derived coarse clastic materials. Red, grey and black cherts of the Upper Cambrian to the upper mid‐Darriwilian are thinly laminated, and no trace of benthic animal activity is recognized in that time interval. Bioturbation structures and burrow traces in mid‐Darriwilian stage red chert in Kazakhstan suggest that benthic animals colonized the location where radiolarian chert formed, but that there was a significant delay in colonization when compared with similar reported occurrences in Australia and Canada.

show abstract

Tracking the redox history and nitrogen cycle in the pelagic Panthalassic deep ocean in the Middle Triassic to Early Jurassic: Insights from redox-sensitive elements and nitrogen isotopes

Cited by 37 publications

References 163 publications

Paleoenvironmental reconstruction for termination stage of Superanoxia in Middle Triassic (Anisian) sedimentary sequence of the Mino belt, central Japan

Paleoenvironmental reconstruction for termination stage of Superanoxia in Middle Triassic (Anisian) sedimentary sequence of the Mino belt, central Japan

日本列島付加体中に胚胎する古海洋底で生成した鉱床

Petrography of Late Cambrian to Middle Ordovician radiolarian chert in Kazakhstan with special reference to the emergence of benthic animals in the pelagic realm

Contact Info

Product

Resources

About