کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4698845 1637604 2014 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Nanoparticulate pyrite and other nanoparticles are a widespread component of hydrothermal vent black smoker emissions
ترجمه فارسی عنوان
پیریت نانوذرات و دیگر نانوذرات جزء گسترده ای از انتشار گرمابی سیاه
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات ژئوشیمی و پترولوژی
چکیده انگلیسی


• Nanoparticulate minerals are widespread in hydrothermal vent black smoker emissions.
• Pyrite, and iron and copper containing silicate nanoparticles are identified.
• A slow spreading ridge, a fast spreading ridge, and a back-arc basin are explored.

The presence of nanoparticulate pyrite is reported in hydrothermal emissions from Rainbow, TAG and Snakepit on the Mid-Atlantic Ridge (MAR). When coupled with previously collected data from East Pacific Rise 9°N (EPR) and Lau Basin, these data demonstrate that pyrite nanoparticles are a widespread component of black smoker emissions from hydrothermal vents and are found in significant concentrations at a fast spreading mid-ocean Ridge (EPR), a back-arc basin (Lau Basin), and a slow spreading mid-ocean Ridge (MAR). The maximum percentage of filtered iron emitted as nanoparticulate pyrite was found to be as high as 25%, 10%, and 5%, respectively. As a widespread component of hydrothermal vent emissions, these nanoparticles may be an important source of iron to the world's oceans. Metals such as Cu and Zn are detected in pyrite-containing aggregates at all sites, and chalcopyrite was a component of nanoparticle aggregates at MAR. Iron containing silicate nanoparticles are also identified, and indicate that nanoparticles other than sulfides should also be considered when determining transport implications of hydrothermal vent emissions. The varied morphologies and the presence of different minerals within these nanoparticles provide insight into their formation and stability.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Geology - Volume 366, 14 February 2014, Pages 32–41
نویسندگان
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