Alteration of a Submarine Basaltic Glass under Environmental Conditions Conducive for Microorganisms: Growth Patterns of the Microbial Community and Mechanism of Palagonite Formation

Alteration of a Submarine Basaltic Glass under Environmental Conditions Conducive for Microorganisms: Growth Patterns of the Microbial Community and Mechanism of Palagonite Formation
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有利于微生物生长的环境条件下海底玄武岩玻璃的变化:微生物群落的生长模式和八角长石形成机制

DOI:
10.1080/01490451.2014.897774
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发表时间:
2014
影响因子:
2.3
通讯作者:
Deubener
Deubener
中科院分区:
环境科学与生态学4区
文献类型:
--
作者:
Dupont;Halisch;Behrens;Welsch;Erdmann;Helsch;Deubener

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在玄武玻璃从南部大西洋中脊有利于生物风化的环境条件下,在玻璃表面上保存良好的微生物形态。不同的玻璃界面和开放的空间之间的钾长石片和玻璃表明溶解再沉淀机制的玻璃蚀变可能支持微生物。在内部断裂表面上,观察到宽度为20-30 μm的分支通道,其包含具有生长尖端的玻璃的目标溶解的长结构。蚀变作用使斜长岩中Fe、Ti、P、K以无定形矿物形式富集。
In basaltic glass from the southern Mid-Atlantic-Ridge conducive environmental conditions for biogenic weathering resulted in excellent preserved microbial morphologies on glass surfaces. The distinct glass interface and open spaces between palagonite sheet and glass indicate a dissolution-reprecipitation mechanism of glass alteration potentially supported by microorganisms. On internal fracture surfaces, branching channels with widths at 20–30 μm containing longish structures with targeted dissolution of the glass by growing tips were observed. Alteration resulted in enrichment of Fe, Ti, P, and K in palagonite in amorphous mineral forms.
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