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Calcium Isotopic Compositions of Normal Mid‐Ocean Ridge Basalts From the Southern Juan de Fuca Ridge

机译:来自南部的Juan de Fuca Ridge的正常海洋山脊沼气的同位素组成

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Abstract > Mantle peridotites show that Ca is isotopically heterogeneous in Earth's mantle, but the mechanism for such heterogeneity remains obscure. To investigate the effect of partial melting on Ca isotopic fractionation and the mechanism for Ca isotopic heterogeneity in the mantle, we report high‐precision Ca isotopic compositions of the normal Mid‐Ocean Ridge Basalts (N‐MORB) from the southern Juan de Fuca Ridge. δ 44/40 Ca of these N‐MORB samples display a small variation ranging from 0.75?±?0.05 to 0.86?±?0.03‰ (relative to NIST SRM 915a, a standard reference material produced by the National Institute of Standards and Technology), which are slightly lower than the estimated Upper Mantle value of 1.05?±?0.04‰ and the Bulk Silicate Earth (BSE) value of 0.94?±?0.05‰. This phenomenon cannot be explained by fractional crystallization, because olivine and orthopyroxene fractional crystallization has limited influence on δ 44/40 Ca of N‐MORB due to their low CaO contents, while plagioclase fractional crystallization cannot lead to light Ca isotopic compositions of the residue magma. Instead, the lower δ 44/40 Ca of N‐MORB samples compared to their mantle source is most likely caused by partial melting. The offset in δ 44/40 Ca between N‐MORB and BSE indicates that at least 0.1–0.2‰ fractionation would occur during partial melting and light Ca isotopes are preferred to be enriched in magma melt, which is in accordance with the fact that δ 44/40 Ca of melt‐depleted peridotites are higher than fertile peridotites in literature. Therefore, partial melting is an important process that can decrease δ 44/40 Ca in basalts and induce Ca isotopic heterogeneity in Earth's mantle. </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> > Mantle Peridotites显示Ca在地球的地幔中是异构的,但这种异质性的机制仍然存在朦胧。探讨偏熔酶对Ca同位素分级的影响和披风中Ca同位素异质性的机制,我们报告了来自南部的南部Fuca山脊的正常海洋山脊玄武岩(N-Morb)的高精度Ca同位素组成。 Δ 44/40 </ sup> Ca的这些n-morb样品显示出0.75Ω±0.05至0.86?±0.03°(相对于NIST SRM 915A的标准参考资料的小变化国家标准和技术研究所),略低于估计的上部地幔值1.05?±0.04‰,散装硅酸盐地球(BSE)值为0.94?±0.05‰。这种现象不能通过分数结晶来解释,因为橄榄石和脱噻吩分数结晶由于它们的低CaO含量而对N-Morb的δ 44/40 / soc> Ca的影响有限,而Plagioclase分数结晶不能导致光线残留岩浆的Ca同位素组合物。相反,与其披风源相比,N-MORB样品的下Δ 44/40 </ sup> Ca最有可能由部分熔化引起。在n-morb和bse之间的δ 44/40 </ sup> ca中的偏移表明,在部分熔化期间将发生至少0.1-0.2μm分馏,并且优选在岩浆熔体中富集光Ca同位素,这是根据熔融耗尽的恒星的δ 44/40 </ sup>高于文献中的肥沃橄榄石。因此,部分熔化是可以在沼气中减少δ 44/40 </ sup> Ca的重要过程,并在地球的地幔中诱导Ca同位素异质性。 </ p> </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-34677/'>《Journal of geophysical research. Solid earth: JGR》</a> <b style="margin: 0 2px;">|</b><span>2018年第2期</span><b style="margin: 0 2px;">|</b><span>共11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=Zhu Hongli&option=202" target="_blank" rel="nofollow">Zhu Hongli;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Liu Fang&option=202" target="_blank" rel="nofollow">Liu Fang;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Li Xin&option=202" target="_blank" rel="nofollow">Li Xin;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wang Guiqin&option=202" target="_blank" rel="nofollow">Wang Guiqin;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Zhang Zhaofeng&option=202" target="_blank" rel="nofollow">Zhang Zhaofeng;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Sun Weidong&option=202" target="_blank" rel="nofollow">Sun Weidong;</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>State Key Laboratory of Isotope Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou China;</p> <p>State Key Laboratory of Isotope Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou China;</p> <p>State Key Laboratory of Isotope Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou China;</p> <p>State Key Laboratory of Isotope Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou China;</p> <p>State Key Laboratory of Isotope Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou China;</p> <p>Center of Deep Sea Research Institute of OceanographyChinese Academy of SciencesQingdao 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=calcium isotopes&option=203" rel="nofollow">calcium isotopes;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=N‐MORB&option=203" rel="nofollow">N‐MORB;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=fractional crystallization&option=203" rel="nofollow">fractional crystallization;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=partial melting&option=203" rel="nofollow">partial melting;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=mantle heterogeneity&option=203" rel="nofollow">mantle heterogeneity;</a> </p> <div class="translation"> 机译:钙同位素;N-Morb;分数结晶;部分熔化;搭腔异质性; </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/0704025592879.html">Calcium Isotopic Compositions of Normal Mid‐Ocean Ridge Basalts From the Southern Juan de Fuca Ridge</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Zhu Hongli&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Zhu Hongli,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Liu Fang&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Liu Fang,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Li Xin&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Li Xin,</a> <a href="/journal-foreign-34677/" target="_blank" rel="nofollow" class="tuijian_authcolor">Journal of geophysical research. 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2004</span><span>,第3期</span> </span> </div> </li> <li> <div> <b>4. </b><a class="enjiyixqcontent" href="/academic-journal-cn_chinese-journal-geophysics_thesis/0201253064983.html">东太平洋 Juan de Fuca 板块的磁变研究</a> <b>[J]</b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . </a> <span> <a href="/journal-cn-4904/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 地球物理学报 </a> </span> <span> . 1990</span><span>,第005期</span> </span> </div> </li> <li> <div> <b>5. </b><a class="enjiyixqcontent" href="/academic-journal-cn_seismology-geology_thesis/0201253229479.html">东太平洋Juan de Fuca板块的大地电磁研究</a> <b>[J]</b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=赵国泽&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 赵国泽</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=行武毅&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,行武毅</a> <span> <a href="/journal-cn-4916/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 地震地质 </a> </span> <span> . 1990</span><span>,第002期</span> </span> </div> </li> <li> <div> <b>6. </b><a class="enjiyixqcontent" href="/academic-conference-cn_meeting-596_thesis/020221247198.html">Juan de Fuca洋脊羽流末端沉积物的热液记录及保存</a> <b>[C]</b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=孙治雷&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 孙治雷</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=希杰&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,希杰</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=曹红&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">,曹红</a> <span> <a href="/conference-cn-596/" target="_blank" rel="nofollow" class="tuijian_authcolor"> . 第七届全国成矿理论与找矿方法学术讨论会 </a> <span> <span> . 2015</span> </span> </div> </li> <li> <div> <b>7. </b><a class="enjiyixqcontent" href="/academic-degree-domestic_mphd_thesis/02031141903.html">Juan de Fuca洋脊Endeavour段热液烟囱体的生长历史和热液演化的流体包裹体证据</a> <b>[A] </b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=吴雪枚&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 吴雪枚</a> <span> . 2007</span> </span> </div> </li> </ul> <ul style="display: none;"> <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/patent-detail/06130421290543.html">MID-OCEAN RIDGES IN ATLANTIC AND INDIAN OCEANS, AND CONTINENTAL DRIFT</a> <b>[P]</b> . <span> 外国专利: <!-- 日本专利: --> JP2013110931A </span> <span> . 2013-06-06</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:大西洋和印度洋中的洋脊和大陆漂移 </span> </p> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/patent-detail/06130439047359.html">Ridge ventilation unit, has central part made of fire proof mineral fibers e.g. fiber glass, basaltic fibers and/or combination of both fiber glass and basaltic fibers with additional metal fibers e.g. stainless steel or natural fibers</a> <b>[P]</b> . <span> 外国专利: <!-- 德国专利: --> DE202004009210U1 </span> <span> . 2005-07-28</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:脊通风装置,其中央部分由防火矿物纤维制成,例如玻璃纤维,玄武岩纤维和/或玻璃纤维和玄武岩纤维与其他金属纤维的组合,例如不锈钢或天然纤维 </span> </p> </li> <li> <div> <b>3. </b><a class="enjiyixqcontent" href="/patent-detail/06130416521181.html">Sliding dovetail joint element e.g. profile board or profile strip, has ridge collar formed as hollow-cylindrical ridge groove, which includes ridge groove leg for partially limiting ridge groove and ends at recess of ridge collar</a> <b>[P]</b> . <span> 外国专利: <!-- 德国专利: --> DE102012020827A1 </span> <span> . 2014-04-17</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:滑动燕尾榫连接元件,例如型材板或型材条,具有形成为空心圆柱状脊槽的脊环,该脊环包括用于部分限制脊槽的脊槽支脚,并且在脊环的凹槽处终止 </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('0704025592879','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"> <h2>期刊订阅</h2> <img 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