Geomicrobiological Properties and Processes of Travertine
With a Focus on Japanese Sites
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Article
Open AccessDouble-stranded RNA sequencing reveals distinct riboviruses associated with thermoacidophilic bacteria from hot springs in Japan
Metatranscriptome sequencing expanded the known diversity of the bacterial RNA virome, suggesting that additional riboviruses infecting bacterial hosts remain to be discovered. Here we employed double-stranded...
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Article
Open AccessInfluence of normal tide and the Great Tsunami as recorded through hourly-resolution micro-analysis of a mussel shell
We report here hourly variations of Mg/Ca, Sr/Ca, and Ba/Ca ratios in a Mediterranean mussel shell (Mytilus galloprovincialis) collected at the Otsuchi bay, on the Pacific coast of northeastern Japan. This bivalv...
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Article
Open AccessStalagmite evidence for East Asian winter monsoon variability and 18O-depleted surface water in the Japan Sea during the last glacial period
In the East Asian monsoon area, stalagmites generally record lower and higher oxygen isotope (δ18O) levels during warm humid interglacial and cold dry glacial periods, respectively. Here, we report unusually low ...
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Book
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Chapter
Concluding Remarks
For better understanding of the processes involved in the travertine development, it is essential to know the basic chemical principles (Chap. 2), the sedimentolog...
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Introduction
Stone of light yellow color, sometimes laminated and porous, is often found on wall material. The word travertine in general means such kind of limestone material. It was derived from lapis tiburtinus that means ...
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Sedimentology of Travertine
Sediment bodies of travertine exhibit unique geomorphology that results from its rapid sedimentation rate. As described in Chap. 2 and will be discussed in Chap. ...
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Geomicrobiological Processes for Laminated Textures
A laminated deposit is a record of cyclic changes of physical, geochemical, and microbiological conditions. The laminated pattern is often quite regular. In lacustrine verves, regular seasonal changes in weath...
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Chapter
Travertines in Japan
In this chapter, we describe several representative travertine sites in the Japanese islands. According to our extensive search, there are at least 30 hot springs that developed calcareous deposits (Fig. 7.1, ...
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Basic Knowledge of Geochemical Processes
Travertines (or thermogene travertines in Pentecost 2005) are formed from hydrothermal water with an initial high concentration of Ca2+ and CO2 partial pressure (Ford and Pedley 1996; Gandin and Capezzuoli 2008, ...
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Methods
Because the travertine is a product associated with geological, physical, chemical, and microbiological conditions, comprehensive understanding of its formational processes requires a wide range of analyses wi...
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Geochemical Model for Rapid Carbonate Precipitation of Travertines
In the last chapter, we demonstrate the daily processes of the sub-mm-scale lamination. When favorable geochemical and hydrological conditions sustain, travertine can grow at a rate of tens of centimeters per ...
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Article
Open AccessCyanobacterial exopolymer properties differentiate microbial carbonate fabrics
Although environmental changes and evolution of life are potentially recorded via microbial carbonates, including laminated stromatolites and clotted thrombolites, factors controlling their fabric are still a ...
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Article
Open AccessHydrogen and carbon isotope systematics in hydrogenotrophic methanogenesis under H2-limited and H2-enriched conditions: implications for the origin of methane and its isotopic diagnosis
Hydrogen and carbon isotope systematics of H2O–H2–CO2–CH4 in hydrogenotrophic methanogenesis and their relation to H2 availability were investigated. Two H2-syntrophic cocultures of fermentatively hydrogenogenic ...
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Chapter
Microbial Control on Lamina Formation in a Travertine of Crystal Geyser, Utah
Travertines – carbonates mostly precipitated in situ from calcareous hot-spring water – often show stromatolitic lamination which has been interpreted as daily banding (Folk et al. 1985; Guo and Riding 1992; P...
