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. 2016 Jan 21;6:1518. doi: 10.3389/fmicb.2015.01518

FIGURE 4.

FIGURE 4

Scanning Electron Microscopy (SEM) images of the surface of the basaltic glass chips incubated in situ in the abyssal plain (A,C) and in vitro(B,D). (A) oxidized basaltic glass incubated in situ (BO2; seen from above); (B) reduced basaltic glass abiotically incubated in vitro at 4°C and serving as control (side view); (C) reduced basaltic glass incubated in situ (BH2; side view); (D) reduced basaltic glass incubated in vitro with Mariprofundus ferrooxydans DIS-1 (seen from top). White stars = basaltic glass surface; black stars = iron oxides; black dotted arrows = cell-like structures; white dotted arrows = salt crystals. (E) EDX spectrum collected on the weathering rind at the surface of the reduced basaltic glass (BH2) incubated in situ and shown in (C). Accelerating voltage (EHT) and detection modes (SE2, VPSE, Inlens = secondary electrons; AsB = backscattered electrons) used for each image are indicated.