2013
DOI: 10.2138/am.2013.4272
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Microbial and inorganic control on the composition of clay from volcanic glass alteration experiments

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Cited by 27 publications
(12 citation statements)
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“…Microbial biofilms. (a) Photograph of a biofilm, in water, developing attached to grains of ground rhyolitic obsidian, from the experiments of Cuadros et al (2013a, b). This experiment corresponds to freshwater from a spring.…”
Section: Biofilmsmentioning
confidence: 99%
“…Microbial biofilms. (a) Photograph of a biofilm, in water, developing attached to grains of ground rhyolitic obsidian, from the experiments of Cuadros et al (2013a, b). This experiment corresponds to freshwater from a spring.…”
Section: Biofilmsmentioning
confidence: 99%
“…The analysis of mineralogical associations indicates a clear preference for the secondary alteration products found in the vesicles of these rocks: phyllosilicates, calcites, and zeolites. These minerals have been extensively reported as support structures for microbial habitation in basaltic environments, both in the surface and in the subsurface (Léveillé et al, 2000;Boston et al, 2001;Ivarsson et al, , 2015Léveillé and Datta, 2010;Cuadros et al, 2013). The strong fluorescence signatures with short decay times observed in association with these minerals indicate the likely presence of organic material in these POIs.…”
Section: Correlations Between Physical Properties and Organic Materials Distributionmentioning
confidence: 87%
“…For example, highly altered basalts (such as those derived from fumaroles) have ready availability of the chemical energy needed for microbial metabolism, and have been shown to host microbial colonies throughout the world (Mayhew et al, 2007;Wall et al, 2015;Hynek et al, 2018). Furthermore, some alteration minerals found in basalts offer structural support for microbial colony growth (Léveillé et al, 2000;Boston et al, 2001;Ivarsson et al, , 2015Léveillé and Datta, 2010;Cuadros et al, 2013). Basalts that exhibit different types and degrees of alteration (ranging from unaltered to highly altered) are hypothesized to demonstrate variation in microbial biomass and organic material that may be detectable with spectroscopic instruments.…”
Section: Organic Materials In Basaltsmentioning
confidence: 99%
“…Emphasis has been placed on the importance of micro- to nanoscale investigations for disentangling the intricacies of microbially-mediated or abiotically-driven weathering mechanisms 17 , 18 , particularly in complex ecosystems where laboratory studies do not reproduce the extent of weathering that occurs in soils 19 . Microorganisms catalyze mineral weathering and silicate glass alteration to varying extents 20 23 , yet it remains unclear to what degree biological weathering processes transform volcanic glass and basaltic minerals 24 , 25 . Laboratory studies examining the relative influence of abiotic and biotic constituents on basalt dissolution report a number of realizations that include: (1) greater rates of basalt dissolution in the presence of bacteria where the degree of weathering also varied with the bulk elemental compositions of the volcanic glasses 26 , 27 ; (2) the enhanced release of Zr, Sc, Mn, Fe, Ti, Si/Al, and Si/Fe from basalt in the presence of organic acids, citrate, and dissolved organic matter extracts from Ponderosa Pine forest soil organic horizons 28 , 29 ; and (3) the important role of biofilms in producing contrasting secondary weathering products under abiotic versus biotic conditions 24 .…”
Section: Introductionmentioning
confidence: 99%