New High‐Pressure Phase of CaCO        <sub >3</sub>3        at the Topmost Lower Mantle: Implication for the Deep‐Mantle Carbon Transportation

Li Xinyang; Zhang Zhigang; Lin Jung‐Fu; Ni Huaiwei; Prakapenka Vitali B.; Mao Zhu

摘要

Abstract > In this study, we have investigated the stability of CaCO <sub>3</sub> at high pressures and temperatures using synchrotron X‐ray diffraction in laser‐heated diamond anvil cells. Our experimental results have shown that CaCO <sub>3</sub> in the aragonite structure transforms into CaCO <sub>3</sub> ‐VII ( <fi>P</fi> 2 <sub>1</sub> / <fi>c</fi> ) at 27?GPa and 1,500?K with a negative Clapeyron slope of ?4.3(9)?MPa/K. CaCO <sub>3</sub> ‐VII is stable between 23 and 38?GPa at 2,300?K and transforms into post‐aragonite at 42?GPa and 1,400?K. Furthermore, it reacts with stishovite, an abundant form of SiO <sub>2</sub> in subducted oceanic crust, forming CaSiO <sub>3</sub> ‐perovskite. The occurrence of CaSiO <sub>3</sub> ‐perovskite via the reaction of CaCO <sub>3</sub> ‐VII and stishovite provides an explanation for the observation of the high concentrations of CaSiO <sub>3</sub> ‐perovskite and some amount of CaCO <sub>3</sub> in deep‐mantle inclusions. CaCO <sub>3</sub> ‐VII is thus an important carbon‐bearing phase at the topmost lower mantle and may provide necessary carbon to produce deep‐mantle diamonds. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“Main”XML：Lang =“en”> <标题类型=“main”>抽象</ title> >在本研究中，我们研究了Caco <sub> 3 </ sub>的稳定性在激光加热的金刚石砧座中使用同步旋转X射线衍射的高压和温度。我们的实验结果表明，在金属岩结构中的Caco <sub> 3 </ sub>转化为Caco <sub> 3 </ sub> -vii（<fi> p </ fi> 2 <sub> 1 </ sub> / <fi> c </ fi>）27？gpa和1,500？k，带有负卵形斜率的α.4.3（9）？mpa / k。 Caco <sub> 3 </ sub> -vii在23到38℃之间稳定，2,300〜k的GPA，并在42℃和1,400 k的后桥中转化。此外，它与脊柱杆菌，水底壳中的脊髓卷曲，一种大量的SiO <sub> 2 </ sub>反应，形成Casio <sub> 3 </ sub> -perovskite。通过Caco <sub> 3 </ sub> -vii和脊柱杆菌和脊柱杆菌和脊柱杆菌的反应发生Casio <sub> 3 </ sub> -perovskite提供了对高浓度Casio <sub> 3 </ sub的观察说明>深层包裹夹杂物中的ovskite和一定量的Caco <sub> 3 </ sub>。因此，Caco <sub> 3 </ sub> -vii是最下面的碎屑处的重要碳轴承阶段，并且可以提供必要的碳以产生深罩钻石。 </ p> </ abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-23539/'>《Geophysical Research Letters》</a> <b style="margin: 0 2px;">|</b><span>2018年第3期</span><b style="margin: 0 2px;">|</b><span>共6页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Li Xinyang&option=202" target="_blank" rel="nofollow">Li Xinyang;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Zhang Zhigang&option=202" target="_blank" rel="nofollow">Zhang Zhigang;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Lin Jung‐Fu&option=202" target="_blank" rel="nofollow">Lin Jung‐Fu;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ni Huaiwei&option=202" target="_blank" rel="nofollow">Ni Huaiwei;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Prakapenka Vitali B.&option=202" target="_blank" rel="nofollow">Prakapenka Vitali B.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Mao Zhu&option=202" target="_blank" rel="nofollow">Mao Zhu;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>Laboratory of Seismology and Physics of Earth's Interior School of Earth and Planetary SciencesUniversity of Science and Technology of ChinaHefei China;</p> <p>Key Laboratory of Earth and Planetary PhysicsInstitute of Geology and Geophysics Chinese Academy of SciencesBeijing China;</p> <p>Department of Geological Sciences Jackson School of GeosciencesThe University of Texas at AustinAustin TX USA;</p> <p>Laboratory of Seismology and Physics of Earth's Interior School of Earth and Planetary SciencesUniversity of Science and Technology of ChinaHefei China;</p> <p>Center for Advanced Radiation SourcesUniversity of ChicagoChicago IL USA;</p> <p>Laboratory of Seismology and Physics of Earth's Interior School of Earth and Planetary SciencesUniversity of Science and Technology of ChinaHefei China;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/163.html" title="地球物理学">地球物理学;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=CaCO 3 ‐VII&option=203" rel="nofollow">CaCO 3 ‐VII;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=CaCO 3 ‐SiO 2 reaction&option=203" rel="nofollow">CaCO 3 ‐SiO 2 reaction;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=topmost lower mantle&option=203" rel="nofollow">topmost lower mantle;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=high pressure‐temperature&option=203" rel="nofollow">high pressure‐temperature;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=carbon transportation&option=203" rel="nofollow">carbon transportation;</a> </p> <div class="translation"> 机译：Caco 3 -Vii;Caco 3 -SiO 2反应;最顶层的地幔;高压 - 温度;碳运输; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704019850647.html">New High‐Pressure Phase of CaCO <sub >3</sub>3 at the Topmost Lower Mantle: Implication for the Deep‐Mantle Carbon Transportation</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Li Xinyang&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Li Xinyang,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Zhang Zhigang&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Zhang Zhigang,</a> <a 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New High‐Pressure Phase of CaCO 33 at the Topmost Lower Mantle: Implication for the Deep‐Mantle Carbon Transportation

摘要

New High‐Pressure Phase of CaCO ₃3 at the Topmost Lower Mantle: Implication for the Deep‐Mantle Carbon Transportation