Evidence in the Japan Sea of microdolomite mineralization within gas hydrate microbiomes

Glen T Snyder; Ryo Matsumoto; Yohey Suzuki; Mariko Kouduka; Yoshihiro Kakizaki; Naizhong Zhang; Hitoshi Tomaru; Yuji Sano; Naoto Takahata; Kentaro Tanaka; Stephen A Bowden; Takumi Imajo

doi:10.1038/s41598-020-58723-y

Evidence in the Japan Sea of microdolomite mineralization within gas hydrate microbiomes

Glen T Snyder^* (Corresponding Author), Ryo Matsumoto, Yohey Suzuki, Mariko Kouduka, Yoshihiro Kakizaki, Naizhong Zhang, Hitoshi Tomaru, Yuji Sano, Naoto Takahata, Kentaro Tanaka, Stephen A Bowden, Takumi Imajo

^*Corresponding author for this work

Geology and Geophysics

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Abstract

Over the past 15 years, massive gas hydrate deposits have been studied extensively in Joetsu Basin, Japan Sea, where they are associated primarily with active gas chimney structures. Our research documents the discovery of spheroidal microdolomite aggregates found in association with other impurities inside of these massive gas hydrates. The microdolomites are often conjoined and show dark internal cores occasionally hosting saline fluid inclusions. Bacteroidetes sp. are concentrated on the inner rims of microdolomite grains, where they degrade complex petroleum-macromolecules present as an impurity within yellow methane hydrate. These oils show increasing biodegradation with depth which is consistent with the microbial activity of Bacteroidetes. Further investigation of these microdolomites and their contents can potentially yield insight into the dynamics and microbial ecology of other hydrate localities. If microdolomites are indeed found to be ubiquitous in both present and fossil hydrate settings, the materials preserved within may provide valuable insights into an unusual microhabitat which could have once fostered ancient life.

Original language	English
Article number	1876
Number of pages	13
Journal	Scientific Reports
Volume	10
DOIs	https://doi.org/10.1038/s41598-020-58723-y
Publication status	Published - 5 Feb 2020

Keywords

carbon cycle
marine biology
marine chemistry
HIGH METHANE FLUX
EASTERN MARGIN
CARBONATES
OXYGEN-ISOTOPE
COMMUNITIES
MARINE-SEDIMENTS
DOLOMITE
JOETSU BASIN
DIVERSITY
ISOTOPE FRACTIONATION

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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Snyder_SciRep_Evidence_VOR
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Cite this

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title = "Evidence in the Japan Sea of microdolomite mineralization within gas hydrate microbiomes",

abstract = "Over the past 15 years, massive gas hydrate deposits have been studied extensively in Joetsu Basin, Japan Sea, where they are associated primarily with active gas chimney structures. Our research documents the discovery of spheroidal microdolomite aggregates found in association with other impurities inside of these massive gas hydrates. The microdolomites are often conjoined and show dark internal cores occasionally hosting saline fluid inclusions. Bacteroidetes sp. are concentrated on the inner rims of microdolomite grains, where they degrade complex petroleum-macromolecules present as an impurity within yellow methane hydrate. These oils show increasing biodegradation with depth which is consistent with the microbial activity of Bacteroidetes. Further investigation of these microdolomites and their contents can potentially yield insight into the dynamics and microbial ecology of other hydrate localities. If microdolomites are indeed found to be ubiquitous in both present and fossil hydrate settings, the materials preserved within may provide valuable insights into an unusual microhabitat which could have once fostered ancient life.",

keywords = "carbon cycle, marine biology, marine chemistry, HIGH METHANE FLUX, EASTERN MARGIN, CARBONATES, OXYGEN-ISOTOPE, COMMUNITIES, MARINE-SEDIMENTS, DOLOMITE, JOETSU BASIN, DIVERSITY, ISOTOPE FRACTIONATION",

author = "Snyder, {Glen T} and Ryo Matsumoto and Yohey Suzuki and Mariko Kouduka and Yoshihiro Kakizaki and Naizhong Zhang and Hitoshi Tomaru and Yuji Sano and Naoto Takahata and Kentaro Tanaka and Bowden, {Stephen A} and Takumi Imajo",

note = "This study was conducted under the commission of AIST (National Institute of Advanced Industrial Science and Technology, Japan) from 2013–2015 as part of the methane hydrate research project funded by METI (the Ministry of Economy, Trade and Industry, Japan). Ongoing work is currently being carried out thanks to a Grant-in-aid provided by the JSPS and MEXT (Kaken Project # 17K05712). The authors also would like to acknowledge laboratory assistance provided by A. Hiruta, T. Oi, N. Ishida, and R. Warabi (GHRL, Meiji University), Y. Kusaba (AORI, University of Tokyo), S. Motai (Kochi Inst. Core Sample Research, JAMSTEC), and Y. Nakajima (Joetsu Environmental Science Centre). ",

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doi = "10.1038/s41598-020-58723-y",

language = "English",

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journal = "Scientific Reports",

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AU - Snyder, Glen T

AU - Matsumoto, Ryo

AU - Suzuki, Yohey

AU - Kouduka, Mariko

AU - Kakizaki, Yoshihiro

AU - Zhang, Naizhong

AU - Tomaru, Hitoshi

AU - Sano, Yuji

AU - Takahata, Naoto

AU - Tanaka, Kentaro

AU - Bowden, Stephen A

AU - Imajo, Takumi

N1 - This study was conducted under the commission of AIST (National Institute of Advanced Industrial Science and Technology, Japan) from 2013–2015 as part of the methane hydrate research project funded by METI (the Ministry of Economy, Trade and Industry, Japan). Ongoing work is currently being carried out thanks to a Grant-in-aid provided by the JSPS and MEXT (Kaken Project # 17K05712). The authors also would like to acknowledge laboratory assistance provided by A. Hiruta, T. Oi, N. Ishida, and R. Warabi (GHRL, Meiji University), Y. Kusaba (AORI, University of Tokyo), S. Motai (Kochi Inst. Core Sample Research, JAMSTEC), and Y. Nakajima (Joetsu Environmental Science Centre).

PY - 2020/2/5

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N2 - Over the past 15 years, massive gas hydrate deposits have been studied extensively in Joetsu Basin, Japan Sea, where they are associated primarily with active gas chimney structures. Our research documents the discovery of spheroidal microdolomite aggregates found in association with other impurities inside of these massive gas hydrates. The microdolomites are often conjoined and show dark internal cores occasionally hosting saline fluid inclusions. Bacteroidetes sp. are concentrated on the inner rims of microdolomite grains, where they degrade complex petroleum-macromolecules present as an impurity within yellow methane hydrate. These oils show increasing biodegradation with depth which is consistent with the microbial activity of Bacteroidetes. Further investigation of these microdolomites and their contents can potentially yield insight into the dynamics and microbial ecology of other hydrate localities. If microdolomites are indeed found to be ubiquitous in both present and fossil hydrate settings, the materials preserved within may provide valuable insights into an unusual microhabitat which could have once fostered ancient life.

AB - Over the past 15 years, massive gas hydrate deposits have been studied extensively in Joetsu Basin, Japan Sea, where they are associated primarily with active gas chimney structures. Our research documents the discovery of spheroidal microdolomite aggregates found in association with other impurities inside of these massive gas hydrates. The microdolomites are often conjoined and show dark internal cores occasionally hosting saline fluid inclusions. Bacteroidetes sp. are concentrated on the inner rims of microdolomite grains, where they degrade complex petroleum-macromolecules present as an impurity within yellow methane hydrate. These oils show increasing biodegradation with depth which is consistent with the microbial activity of Bacteroidetes. Further investigation of these microdolomites and their contents can potentially yield insight into the dynamics and microbial ecology of other hydrate localities. If microdolomites are indeed found to be ubiquitous in both present and fossil hydrate settings, the materials preserved within may provide valuable insights into an unusual microhabitat which could have once fostered ancient life.

KW - carbon cycle

KW - marine biology

KW - marine chemistry

KW - HIGH METHANE FLUX

KW - EASTERN MARGIN

KW - CARBONATES

KW - OXYGEN-ISOTOPE

KW - COMMUNITIES

KW - MARINE-SEDIMENTS

KW - DOLOMITE

KW - JOETSU BASIN

KW - DIVERSITY

KW - ISOTOPE FRACTIONATION

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U2 - 10.1038/s41598-020-58723-y

DO - 10.1038/s41598-020-58723-y

M3 - Article

C2 - 32024862

VL - 10

JO - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

M1 - 1876

ER -

Evidence in the Japan Sea of microdolomite mineralization within gas hydrate microbiomes

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Keywords

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Stephen Bowden

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Evidence in the Japan Sea of microdolomite mineralization within gas hydrate microbiomes

Abstract

Keywords

UN SDGs

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Stephen Bowden

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