{"id":3039,"date":"2023-06-27T16:16:10","date_gmt":"2023-06-27T07:16:10","guid":{"rendered":"https:\/\/geo.kankyo.tohoku.ac.jp\/gmel2\/?p=3039"},"modified":"2023-07-18T16:23:19","modified_gmt":"2023-07-18T07:23:19","slug":"seminer-4","status":"publish","type":"post","link":"https:\/\/geo.kankyo.tohoku.ac.jp\/gmel2\/index.php\/2023\/06\/27\/seminer-4\/","title":{"rendered":"\u7b2c\uff17\u56de\u3000\u5ca9\u77f3\u30fc\u6d41\u4f53\u30bb\u30df\u30ca\u30fc\u3092\u884c\u3044\u307e\u3057\u305f\u3002"},"content":{"rendered":"\n<p class=\"has-black-color has-text-color has-medium-font-size\">6\/26\uff08\u6708\uff0917:00-18:00\u306bOnline\u3067\u7b2c\uff17\u56de\u5ca9\u77f3\u30fc\u6d41\u4f53\u30bb\u30df\u30ca\u30fc\u3092\u884c\u3044\u307e\u3057\u305f\u3002\u53c2\u52a0\u8005\u306f\uff11\uff15\u540d\u3067\u3059\u3002\u8b1b\u6f14\u8005\u306fYongsheng Huang\u3055\u3093\u3067\u3001\u30de\u30f3\u30c8\u30eb\u70ad\u9178\u5869\u5316\u306e\u6c34\u71b1\u53cd\u5fdc\u5b9f\u9a13\u3092\u884c\u3044\u3001NaCl\u3068CO2\u306e\u6fc3\u5ea6\u304c\u70ad\u9178\u5869\u5316\u306b\u4e0e\u3048\u308b\u5f71\u97ff\u3068\u3001\u30a2\u30a6\u30bf\u30fc\u30e9\u30a4\u30ba\u3067\u306e\u70ad\u9178\u5869\u5316\u306e\u91cf\u306b\u3064\u3044\u3066\u8b70\u8ad6\u3057\u307e\u3057\u305f\u3002<\/p>\n\n\n\n<p class=\"has-vivid-cyan-blue-color has-text-color has-medium-font-size\"><strong>Important role of mantle serpentinite carbonation of bending faults in deep carbon cycle<\/strong><\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-medium-font-size\">Yongsheng Huang<br><em>State Key Laboratory of Isotope Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China<\/em><\/p>\n\n\n\n<p class=\"has-black-color has-text-color has-medium-font-size\">Serpentinite carbonation contributes to the deep carbon (C) cycle. Recently, geophysical and numerical studies implied a potentially larger C storage in slab mantles. However, a quantitative determination of carbon uptake at outer rise regions is lacking. Here, we experimentally constrain the carbonation reaction in serpentinite\u2013H2O\u2013CO2\u2013NaCl systems with various salinity (XNaCl) and CO2 concentrations (XCO2) at 140\u2013180 MPa and 300\u2013500 \u00b0C, corresponding to bending fault conditions. The porous reaction zone (~50% porosity) promotes the carbonation reaction through continuous supply of CO2-bearing fluids to the chemical reaction front. We find that NaCl can effectively decrease the reaction rate of serpentinite carbonation, especially at low salinities &lt; 5 wt.%. This is most likely attributed to that the presence of NaCl reduces the water activity, CO2 activity, and diffusivity, and increases the magnesite solubility. We fit an empirical equation (temperature, pressure, XCO2, XNaCl) for reaction rate based on our results, which makes us able to calculate C uptake in slab mantles contributed by serpentinite carbonation at outer rise regions with realistic temperature, pressure, CO2 concentration, and salinity.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>6\/26\uff08\u6708\uff0917:00-18:00\u306bOnline\u3067\u7b2c\uff17\u56de\u5ca9 &#8230;<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[99],"tags":[],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/geo.kankyo.tohoku.ac.jp\/gmel2\/index.php\/wp-json\/wp\/v2\/posts\/3039"}],"collection":[{"href":"https:\/\/geo.kankyo.tohoku.ac.jp\/gmel2\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/geo.kankyo.tohoku.ac.jp\/gmel2\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/geo.kankyo.tohoku.ac.jp\/gmel2\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/geo.kankyo.tohoku.ac.jp\/gmel2\/index.php\/wp-json\/wp\/v2\/comments?post=3039"}],"version-history":[{"count":1,"href":"https:\/\/geo.kankyo.tohoku.ac.jp\/gmel2\/index.php\/wp-json\/wp\/v2\/posts\/3039\/revisions"}],"predecessor-version":[{"id":3040,"href":"https:\/\/geo.kankyo.tohoku.ac.jp\/gmel2\/index.php\/wp-json\/wp\/v2\/posts\/3039\/revisions\/3040"}],"wp:attachment":[{"href":"https:\/\/geo.kankyo.tohoku.ac.jp\/gmel2\/index.php\/wp-json\/wp\/v2\/media?parent=3039"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/geo.kankyo.tohoku.ac.jp\/gmel2\/index.php\/wp-json\/wp\/v2\/categories?post=3039"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/geo.kankyo.tohoku.ac.jp\/gmel2\/index.php\/wp-json\/wp\/v2\/tags?post=3039"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}