Abnormal Elasticity of Fe‐Bearing Bridgmanite in the Earth's Lower Mantle

Fu Suyu; Yang Jing; Zhang Yanyao; Okuchi Takuo; McCammon Catherine; Kim Hyo‐Im; Lee Sung Keun; Lin Jung‐Fu

摘要

Abstract > We measured the effect of pressure on the compressional and shear wave velocity ( V <sub> P </sub> , V <sub> S </sub> ) as well as density of Fe‐bearing bridgmanite, Mg <sub>0.96(1)</sub> Fe 2+ <sub>0.036(5)</sub> Fe 3+ <sub>0.014(5)</sub> Si <sub>0.99(1)</sub> O <sub>3</sub> , using impulsive stimulated light scattering, Brillouin light scattering, and X‐ray diffraction, respectively, in diamond anvil cells up to 70?GPa at 300?K. A drastic softening of V <sub> P </sub> by ~6(±1)% is observed between 42.6 and 58?GPa, while V <sub> S </sub> increases continuously with increasing pressure. A significant reduction in Poisson's ratio from 0.24 to 0.16 occurs at ~42.6–58?GPa, while V <sub> S </sub> increases by ~3(±1)% above ~40?GPa compared to MgSiO <sub>3</sub> ‐bridgmanite. Thermoelastic modeling of the experimental results shows that the observed elastic anomaly of Fe‐bearing bridgmanite is consistent with a spin transition of octahedrally coordinated Fe 3+ in bridgmanite. These results challenge traditional views that Fe enrichment will reduce seismic velocities, suggesting that seismic heterogeneities in the mid‐lower mantle may be due to a spin transition of Fe in Fe‐bearing bridgmanite. </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> >我们测量了压力对压缩和剪切波速度的影响（ v < / i> <sub> p </ i> </ sub>， v </ i> <sub> s </ i> </ sub>）以及FE-密度轴承Bridgmanite，Mg <sub> 0.96（1）</ sub> Fe 2 + </ sup> <sub> 0.036（5）</ sub> Fe 3 + </ sup> <sub> 0.014 （5）</ sub> Si <sub> 0.99（1）</ sub> O <sub> 3 </ sub>，使用脉冲刺激的光散射，布里渊光散射和X射线衍射，在金刚石铁砧中细胞高达70？gpa，300？k。在42.6和58之间观察到 v </ i> p </ s p </ sup>×〜6（±1）％的急剧软化。 v < / i> <亚> s </ i> </ sub>随着压力的增加连续增加。泊松比的显着降低在0.24至0.16中发生在〜42.6-58〜0.16中，而 v </ i> <sub> s s </ sub>增加〜3（±1 ）％高于〜40≤GPA与MGSIO <Sub> 3 </ Sub> -Bridgmanite相比。实验结果的热弹性建模表明，观察到的Fe轴承桥桥的弹性异常与桥甲岩中的八面体配位Fe 3 + / sup>的旋转转变一致。这些结果挑战了传统的观点，即Fe富集将减少地震速度，这表明中下幔中的地震异质性可能是由于Fe的Fe旋转过渡的FRIDGManite。 </ 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10期</span><b style="margin: 0 2px;">|</b> <span>共8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=Fu Suyu&option=202" target="_blank" rel="nofollow">Fu Suyu;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Yang Jing&option=202" target="_blank" rel="nofollow">Yang Jing;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Zhang Yanyao&option=202" target="_blank" rel="nofollow">Zhang Yanyao;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Okuchi Takuo&option=202" target="_blank" rel="nofollow">Okuchi Takuo;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=McCammon Catherine&option=202" target="_blank" rel="nofollow">McCammon Catherine;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Kim Hyo‐Im&option=202" target="_blank" rel="nofollow">Kim Hyo‐Im;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Lee Sung Keun&option=202" target="_blank" rel="nofollow">Lee Sung Keun;</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> </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>Department of Geological Sciences Jackson School of GeosciencesThe University of Texas at AustinAustin TX USA;</p> <p>Department of Geological Sciences Jackson School of GeosciencesThe University of Texas at AustinAustin TX USA;</p> <p>Department of Geological Sciences Jackson School of GeosciencesThe University of Texas at AustinAustin TX USA;</p> <p>Institute for Planetary MaterialsOkayama UniversityMisasa Japan;</p> <p>Bayerisches GeoinstitutUniversity of BayreuthBayreuth Germany;</p> <p>School of Earth and Environmental SciencesSeoul National UniversitySeoul South Korea;</p> <p>School of Earth and Environmental SciencesSeoul National UniversitySeoul South Korea;</p> <p>Department of Geological Sciences Jackson School of GeosciencesThe University of Texas at AustinAustin TX USA;</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=bridgmanite&option=203" rel="nofollow">bridgmanite;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=elasticity&option=203" rel="nofollow">elasticity;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=spin transition&option=203" rel="nofollow">spin transition;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=lower mantle&option=203" rel="nofollow">lower mantle;</a> </p> <div class="translation"> 机译：Bridgmanite;弹性;旋转过渡;较低的地幔; </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/0704019851866.html">Abnormal Elasticity of Fe‐Bearing Bridgmanite in the Earth's Lower Mantle</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Fu Suyu&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Fu Suyu,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Yang Jing&option=202" target="_blank" rel="nofollow" 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Xue Xiaoqiu</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=薛笑秋&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,薛笑秋</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Chen Lihui&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,Chen Lihui</a> <span> <a href="/conference-cn-66719/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 2018年地幔矿物岩石地球化学研讨会 </a> <span> <span> . 2018</span> </span> </div> </li> <li> <div> <b>7. </b><a class="enjiyixqcontent" href="/academic-degree-domestic_mphd_thesis/020315323013.html">高温高压下MgO--Al2O3--SiO2--H2O体系内地幔矿物的热弹性力学性质及其地球物理学意义</a> <b>[A] </b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=段云飞&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 段云飞</a> <span> . 2020</span> </span> </div> </li> </ul> <ul style="display: none;"> <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/patent-detail/06120101880847.html">用于在地球物理勘探中对异常密度区建模的方法和系统</a> <b>[P]</b> . <span> 中国专利： CN103189760A </span> <span> . 2013-07-03</span> </div> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/patent-detail/06120110333304.html">旨在装配在机动车辆的通常在后部的地板中的凹下部分、通常为备用车轮凹下部分中的紧固装置</a> <b>[P]</b> . <span> 中国专利： CN107848584A </span> <span> . 2018-03-27</span> </div> </li> <li> <div> <b>3. </b><a class="enjiyixqcontent" href="/patent-detail/06130448225953.html">Mounting for a glass plate at holders on a building exterior has springs at the mantle surface of the lower plate clamp against a shrouding bell cap for the elasticity to give play under wind and other forces without glass plate tension</a> <b>[P]</b> . <span> 外国专利：  DE19915194C1 </span> <span> . 2000-11-16</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：将玻璃板安装在建筑物外部的支架上，在下部板的衬套表面上有弹簧，该弹簧紧靠带罩的钟形帽，以在风和其他力作用下发挥弹性，而无需玻璃板张紧 </span> </p> </li> <li> <div> <b>4. </b><a class="enjiyixqcontent" href="/patent-detail/06130438585089.html">FUNCTIONAL MAINTENANCE METHOD OF BRIDGE BEARING IN CASE OF EARTHQUAKE, BOLT FOR FIXING THE BRIDGE BEARING TO LOWER STRUCTURE AND FIXED CONSTRUCTION OF THE BRIDGE BEARING AND THE LOWER STRUCTURE</a> <b>[P]</b> . <span> 外国专利：  JP2006207119A </span> <span> . 2006-08-10</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：地震情况下桥梁支座的功能维护方法，将桥梁支座固定在较低结构上的螺栓以及桥梁支座和下部结构的固定结构 </span> </p> </li> <li> <div> <b>5. </b><a class="enjiyixqcontent" href="/patent-detail/06130421754651.html">Insert body for insertion into bearing device for connecting e.g. suspension and supporting part of motor car, has projection part provided with surface, where body has lower elasticity and is adapted to opening of portion of bearing device</a> <b>[P]</b> . <span> 外国专利：  DE102011000311A1 </span> <span> . 2012-07-05</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：用于插入轴承装置的插入体，用于连接例如汽车的悬架和支承部分，其凸出部分设有表面，该主体的弹性较低，并适合于轴承装置部分的开口。 </span> </p> </li> </ul> </div> </div> </div> <div class="theme cardcommon" style="overflow: auto;display:none"> <h3 class="all_title" id="enpatent55">相关主题</h3> <ul id="subject"> </ul> </div> </div> </div> </div> <div class="right rightcon"> <div class="details_img cardcommon clearfix" style="margin-bottom: 10px;display:none;" > </div> </div> </div> <div id="thesis_get_original1" class="downloadBth" style="bottom: 19px;z-index: 999;" onclick="ywcd('0704019851866','4',7,2,1,'',this,24)" class="delivery" prompt="010401" title="通过人工服务将文献原文发送至邮箱" >获取原文</div> <div class="journalsub-pop-up" style="display: none"> <div class="journal-sub"> 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