Iron and sulfide nanoparticle formation and transport in nascent hydrothermal vent plumes
Iron and sulfide nanoparticle formation and transport in nascent hydrothermal vent plumes
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DOI：
10.1038/s41467-019-09580-5
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发表时间：
2019-04-08
影响因子：
16.6
通讯作者：
Luther, George W., III
中科院分区：
文献类型：
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作者：
Findlay, Alyssa J.;Estes, Emily R.;Luther, George W., III
深海热液喷口是全球海洋溶解金属的一个重要来源，产生富含金属的中层水羽流，从喷口源输送到数千公里之外。热液流体排放时的颗粒沉淀控制金属形态和金属输出的大小。在这里，我们记录金属硫化物颗粒，包括黄铁矿纳米颗粒，在第一米的浮力羽流从三个高温喷口在东太平洋隆起。我们观察到一个区域的颗粒沉降10-20厘米的孔，由稳定的硫同位素表示，然而，我们也表明，纳米颗粒黄铁矿（FeS 2）没有从羽流中去除，可以占一半以上的过滤铁（
Deep-sea hydrothermal vents are a significant source of dissolved metals to the global oceans, producing midwater plumes enriched in metals that are transported thousands of kilometers from the vent source. Particle precipitation upon emission of hydrothermal fluids controls metal speciation and the magnitude of metal export. Here, we document metal sulfide particles, including pyrite nanoparticles, within the first meter of buoyant plumes from three high-temperature vents at the East Pacific Rise. We observe a zone of particle settling 10-20 cm from the orifice, indicated by stable sulfur isotopes; however, we also demonstrate that nanoparticulate pyrite (FeS2) is not removed from the plume and can account for over half of the filtered Fe (