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首页> 外文期刊>Geophysical Research Letters >Surface area measurements of marine basalts: Implications for the subseafloor microbial biomass
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Surface area measurements of marine basalts: Implications for the subseafloor microbial biomass

机译:海洋玄武岩的表面积测量:对海底微生物生物量的影响

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These first measurements of specific surface area (SSA) of bulk samples of subsurface marine basalts were undertaken to determine the potential area available for microbial colonization. SSA ranged from 0.3 to 52 m~2/g of basalt with the lowest value coming from pillow basalt and the highest value from breccia. The average for massive and pillow basalts combined was 2.3 m ~2/g. The total specific surface area of the extrusive volcanic rocks of the ocean crust is estimated to be 10~(24) m~2. This surface area could provide attachment for up to 10~(34) cells if cell density is the same as that of experimentally colonized basalt surfaces. Independent measures and calculations of biomass in basalts suggest that cell densities on surfaces are only 10~(-4) times those in laboratory experiments and, therefore, the surface area of basalt does not limit microbial biomass in the igneous ocean crust.
机译:进行了这些地下海底玄武岩大块样品的比表面积(SSA)的首次测量,以确定可用于微生物定殖的潜在面积。 SSA范围为玄武岩的0.3到52 m〜2 / g,最小值来自枕形玄武岩,最大值来自角砾岩。块状玄武岩和枕形玄武岩的平均合计为2.3 m〜2 / g。据估计,洋壳挤压火山岩的总比表面积为10〜(24)m〜2。如果细胞密度与实验定殖的玄武岩表面相同,则该表面积最多可提供10〜(34)个细胞的附着。对玄武岩中生物量的独立测量和计算表明,玄武岩表面的细胞密度仅为实验室实验的10〜(-4)倍,因此玄武岩的表面积并不限制火成岩壳中的微生物生物量。

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