Magnetite in seafloor serpentinite-Some like it hot
Magnetite in seafloor serpentinite-Some like it hot
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DOI：
10.1130/g35068.1
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发表时间：
2014-02-01
期刊：
影响因子：
5.8
通讯作者：
Berquo, Thelma S.
中科院分区：
文献类型：
--
作者：
Klein, Frieder;Bach, Wolfgang;Berquo, Thelma S.
地幔橄榄岩的蛇纹石化作用产生分子氢，微生物可以利用分子氢获得代谢能量；然而，人们对蛇纹石化过程中控制氢气产生和磁铁矿形成的机制仍知之甚少。我们检查了在海洋钻探计划期间发现的部分至完全蛇纹石化橄榄岩，发现磁铁矿丰度存在显着变化。一些完全蛇纹石化的橄榄岩含有高达 6.15 wt% 的磁铁矿，而其他橄榄岩几乎不含磁铁矿（
Serpentinization of mantle peridotite generates molecular hydrogen that can be exploited by microorganisms to gain metabolic energy; however, the mechanisms that control hydrogen generation and magnetite formation during serpentinization remain poorly understood. We have examined partly to completely serpentinized peridotites recovered during the Ocean Drilling Program and find a remarkable variation in the abundance of magnetite. Some completely serpentinized peridotites have as much as 6.15 wt% magnetite, whereas others are nearly magnetite free (