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Comparison between widths of tubular structures from (A) glassy margin of Cenozoic pillow lavas from in situ oceanic crust and titanite structures from the Hooggenoeg Complex. (B and C) Size of tubular structures rooted in fracture (A and B data are from ref. 22) and (C) filamentous and globular structures (unrelated to fractures) shown in figure 1I of ref. 6.
