Surface area measurements of marine basalts: Implications for the subseafloor microbial biomass Public Deposited

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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 m2/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 m2/g. The total specific surface area of the extrusive volcanic rocks of the ocean crust is estimated to be 1024 m2. This surface area could provide attachment for up to 1034 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. Citation: Nielsen, M. E., and M. R. Fisk (2010), Surface area measurements of marine basalts: Implications for the subseafloor microbial biomass.
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  • Nielsen, Mark E., and Martin R. Fisk. "Surface area measurements of marine basalts: Implications for the subseafloor microbial biomass." Geophysical reserach letters 37 (2010): L15604-1--5. Print.
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  • description.provenance : Submitted by Deborah Campbell (deborah.campbell@oregonstate.edu) on 2011-09-21T17:25:09Z No. of bitstreams: 1 FiskMartin.COAS.SurfaceAreaMeasurements.pdf: 149728 bytes, checksum: 990b1ae0476d9d380dc99937237397cd (MD5)
  • description.provenance : Approved for entry into archive by Laura Wilson(laura.wilson@oregonstate.edu) on 2011-10-13T22:31:27Z (GMT) No. of bitstreams: 1 FiskMartin.COAS.SurfaceAreaMeasurements.pdf: 149728 bytes, checksum: 990b1ae0476d9d380dc99937237397cd (MD5)
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