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. 2018 Jun 14;9:1252. doi: 10.3389/fmicb.2018.01252

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Copyright © 2018 Stranghoener, Schippers, Dultz and Behrens.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Thin section photographs with cross-polarized light of HSDP2 drill core samples used for incubation experiments. (A) basaltic flow (BF1) with cryptocrystalline matrix [pl (plagioclase) + ol (olivine) + cpx (clinopyroxene) + fet (Fe-Ti oxides)]. (B) Basaltic flow (BF2) with gl (glass matrix) + ol + cpx and vesicles filled with ph (phillipsite). (C) Hyaloclastite (HC1) with cryptocrystalline matrix (pl + ol + cpx + fet) + ol + cpx + pl phenocrysts. (D) Hyaloclastite (HC2) with gl + ol + cpx + pl phenocrysts. (E) Pillow basalt (PB1) with gl + ol phenocrysts + alt (alteration products) in veins. (F) Pillow basalt (PB2) with gl + ol phenocrysts + alt in veins. The glass in all samples is partially altered to palagonite (brownish colored).