Environmental Controls on Mg/Ca in        <i >Neogloboquadrina incomptaNeogloboquadrina incompta        : A Core‐Top Study From the Subpolar North Atlantic

Morley Audrey; Babila Tali L.; Wright James; Ninnemann Ulysses; Kleiven Kikki; Irvali Nil; Rosenthal Yair

摘要

Abstract > Magnesium/calcium paleothermometry is an established tool for reconstructing past surface and deep‐sea temperatures. However, our understanding of nonthermal environmental controls on the uptake of Mg into the calcitic lattice of foraminiferal tests remains limited. Here we present a combined analysis of multiple trace element/calcium ratios and stable isotope (δ 18 O and δ 13 C) geochemistry on the subpolar planktonic foraminifera Neogloboquadrina incompta to assess the validity of Mg/Ca as a proxy for surface ocean temperature. We identify small size‐specific offsets in Mg/Ca and δ 18 O <sub>c</sub> values for N. incompta that are consistent with depth habitat migration patterns throughout the life cycle of this species. Additionally, an assessment of nonthermal controls on Mg/Ca values reveals that (1) the presence of volcanic ash, (2) the addition of high‐Mg abiotic overgrowths, and (3) ambient seawater carbonate chemistry can have a significant impact on the Mg/Ca‐to‐temperature relationship. For carbonate‐ion concentrations of values??200 μmol?kg ?1 , we find that temperature exerts the dominant control on Mg/Ca values, while at values??200 μmol?kg ?1 the carbonate‐ion concentration of seawater increases the uptake of Mg, thereby resulting in higher‐than‐expected Mg/Ca values at low temperatures. We propose two independent correction schemes to remove the effects of volcanic ash and carbonate‐ion concentration on Mg/Ca values in N. incompta within the calibration data set. Applying the corrections improves the fidelity of past ocean temperature reconstructions. </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”> <标题类型=“main”>抽象</ title> > 镁/钙苍白温度是重建过去表面和深海温的建立工具。然而，我们对非热环境控制的理解对多氨基因检测的钙质晶格的吸收仍然有限。在这里，我们提出了多种痕量元素/钙比和稳定同位素的组合分析（δ 18 </ sup> o和δ 13 </ sup> c）亚体浮游动物的地球化学 neogloboquadrina chomppta </ i> 评估Mg / Ca的有效性作为表面海洋温度的代理。我们识别MG / CA和δ中的小尺寸特定的偏移 18 </ sup> O. <sub> c </ sub> 价值观 n。 incompta </ i> 这与整个物种的生命周期中的深度栖息地迁移模式一致。另外，对Mg / Ca值的非热对照的评估表明（1）火山灰的存在，（2）添加高镁非生物过度生长，（3）环境海水碳酸盐化学可能对此产生重大影响Mg / Ca-温度关系。对于碳酸盐离子浓度的值α＆α，200μmol？kg ？1 </ sup> ，我们发现温度施加在Mg / Ca值上的主导控制，而在值α中ααα＆？200μmol？kg ？1 </ sup> 海水的碳酸盐离子浓度增加了Mg的摄取，从而在低温下产生高于预期的Mg / Ca值。我们提出了两个独立的校正方案，以消除火山灰和碳酸盐离子浓度对Mg / Ca值的影响 n。 encompta </ i> 在校准数据集中。应用校正提高了过去海洋温度重建的保真度。 </ p> </摘要> </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-23285/'>《Geochemistry, geophysics, geosystems》</a> <b style="margin: 0 2px;">|</b><span>2017年第12期</span><b style="margin: 0 2px;">|</b><span>共23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=Morley Audrey&option=202" target="_blank" rel="nofollow">Morley Audrey;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Babila Tali L.&option=202" target="_blank" rel="nofollow">Babila Tali L.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Wright James&option=202" target="_blank" rel="nofollow">Wright James;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ninnemann Ulysses&option=202" target="_blank" rel="nofollow">Ninnemann Ulysses;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Kleiven Kikki&option=202" target="_blank" rel="nofollow">Kleiven Kikki;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Irvali Nil&option=202" target="_blank" rel="nofollow">Irvali Nil;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Rosenthal Yair&option=202" target="_blank" rel="nofollow">Rosenthal Yair;</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>School of Geography and ArchaeologyNational University of Ireland GalwayGalway Ireland;</p> <p>Earth and Planetary SciencesUniversity of California Santa CruzSanta Cruz CA USA;</p> <p>Department of Geological SciencesRutgers UniversityPiscataway NJ USA;</p> <p>Department of Earth Science and Bjerknes Centre for Climate ResearchUniversity of BergenBergen Norway;</p> <p>Department of Earth Science and Bjerknes Centre for Climate ResearchUniversity of BergenBergen Norway;</p> <p>Department of Earth Science and Bjerknes Centre for Climate ResearchUniversity of BergenBergen Norway;</p> <p>Department of Marine and Coastal Science and Department of Earth and Planetary SciencesRutgers UniversityNew Brunswick NJ 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=Mg/Ca‐paleothermometry&option=203" rel="nofollow">Mg/Ca‐paleothermometry;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=planktonic foraminifera&option=203" rel="nofollow">planktonic foraminifera;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Neogloboquadrina incompta&option=203" rel="nofollow">Neogloboquadrina incompta;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=carbonate‐ion concentration effect&option=203" rel="nofollow">carbonate‐ion concentration effect;</a> </p> <div class="translation"> 机译：Mg / Ca-Paleothermometry;Plankton foraminifera;Neogloboquadrina incompta;碳酸盐离子浓度效应; 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none;"> <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/patent-detail/06130401759697.html">Top-cover for a controlled environmental system, top-cover-set and controlled environmental system compatible with probe based techniques and procedure to control the environment for a sample</a> <b>[P]</b> . <span> 外国专利：  US10545169B2 </span> <span> . 2020-01-28</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：顶盖用于受控环境系统，顶盖固定和受控环境系统与基于探针的技术和程序兼容，以控制样品的环境 </span> </p> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/patent-detail/06130406866045.html">TOP-COVER FOR A CONTROLLED ENVIRONMENTAL SYSTEM, TOP-COVER-SET AND CONTROLLED ENVIRONMENTAL SYSTEM COMPATIBLE WITH PROBE BASED TECHNIQUES AND PROCEDURE TO CONTROL THE ENVIRONMENT FOR A SAMPLE</a> <b>[P]</b> . <span> 外国专利：  US2018224479A1 </span> <span> . 2018-08-09</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：受控环境系统的顶层覆盖，与基于探针的技术兼容的顶层覆盖和受控环境系统以及用于控制样本环境的过程 </span> </p> </li> <li> <div> <b>3. </b><a class="enjiyixqcontent" href="/patent-detail/06130450819248.html">Floor covering for areas where environmentally harmful substances will be spilt, comprising a first mat underlayer with an absorbent core and a second mat with a high coefficient of friction forming the top layer</a> <b>[P]</b> . <span> 外国专利：  NL1009380C2 </span> <span> . 1999-12-15</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：用于会散布对环境有害物质的区域的地板，包括带有吸收芯的第一垫底层和形成顶层的具有高摩擦系数的第二垫 </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"> 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Environmental Controls on Mg/Ca in Neogloboquadrina incomptaNeogloboquadrina incompta : A Core‐Top Study From the Subpolar North Atlantic

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