REY‐Th‐U Dynamics in the Critical Zone: Combined Influence of Reactive Bedrock Accessory Minerals, Authigenic Phases, and Hydrological Sorting (Mule Hole Watershed, South India)

Braun Jean‐Jacques; Riotte Jean; Battacharya Shrema; Violette Aurélie; Oliva Priscia; Prunier Jonathan; Maréchal Jean‐Christophe; Ruiz Laurent; Audry Stéphane; Subramanian S.

摘要

Abstract > The sources of REY‐Th‐U and long‐term mass balance were assessed in the gneissic tropical forested Critical Zone Observatory of Mule Hole, India. The study relies on the characterization of the solid compartments (bedrock, soils, streambed and suspended sediments), on batch leaching experiments of the parent gneiss and on extractions of cation‐exchangeable and iron‐related pools of selected soil samples. The REY‐Th‐U primary reservoir is controlled by monazite, xenotime, thorite, allanite, bastnesite, titanite, apatite, and, to a lesser extent, by zircon. This accessory mineral assemblage was profoundly modified by episodes of metamorphism and hydrothermal activity. Allanite, bastnesite, titanite, and apatite are prone to break down at incipient weathering stage while monazite, xenotime and zircon are resistant minerals. On a long‐term basis, REY are roughly inert in the immature saprolite and depleted in the soil cover and are strongly redistributed among secondary phases. LREE and HREY are mainly controlled by poorly crystallized secondary iron oxides and oxyhydroxides, and, to a lesser extent, by secondary phosphates (e.g., rhabdophane). Th, inert in the saprolite, is controlled by well‐crystallized secondary iron oxides and oxyhydroxides and likely by secondary thorianite (ThO <sub>2</sub> ). REY and Th are not easily mobilized during surface processes such as chelation by organic matter and uptake by plants. REY and Th are, by far, exported as suspended sediments associated with iron oxides. The U export by groundwater and suspended sediments dominates over those of streambed sediments and stream. </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> > 在印度骡洞的神奇热带森林临界区观测站中评估了Rey-Th-U和长期质量平衡的来源。该研究依赖于固体隔室（基岩，土壤，流和悬浮沉积物）的表征，母体球茎的批量浸出实验以及阳离子可更换和含铁相关土壤样品池的提取。 Rey-Th-U初级储层由Monazite，Xenotime，Thorite，Allanite，Bastnesite，Titanite，磷灰石和Zircon的较小程度控制。这种附件矿物组合通过变质和水热活性的剧集深受修改。艾塞岩，炸弹岩，二钛矿和磷灰石容易发生在初期的风化阶段，而Monazite，Xenotime和锆石是抗性矿物质。在长期的基础上，Rey大致在未成熟的皂石中呈惰性，并在土壤覆盖中耗尽，并且在次生阶段中强烈重新分布。 LREE和HREY主要由结晶的二次氧化铁和羟基氧化物结晶不良，并且在较小程度上通过次级磷酸（例如，Rhabdophane）来控制。 Th，在saproite中的惰性，由良好结晶的次级氧化铁和羟基氧化物和仲胸泡（Tho <sub> 2 </ sub> ）。在表面过程中，Rey和Th不容易动员，例如通过有机物和植物摄取的螯合剂。到目前为止，Rey和Th将作为与氧化铁相关的悬浮沉积物出口。地下水和悬浮沉积物的U导出占据流沉积物和流的沉积物。 </ 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>2018年第5期</span><b style="margin: 0 2px;">|</b><span>共25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=Braun Jean‐Jacques&option=202" target="_blank" rel="nofollow">Braun Jean‐Jacques;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Riotte Jean&option=202" target="_blank" rel="nofollow">Riotte Jean;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Battacharya Shrema&option=202" target="_blank" rel="nofollow">Battacharya Shrema;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Violette Aurélie&option=202" target="_blank" rel="nofollow">Violette Aurélie;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Oliva Priscia&option=202" target="_blank" rel="nofollow">Oliva Priscia;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Prunier Jonathan&option=202" target="_blank" rel="nofollow">Prunier Jonathan;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Maréchal Jean‐Christophe&option=202" target="_blank" rel="nofollow">Maréchal Jean‐Christophe;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ruiz Laurent&option=202" target="_blank" rel="nofollow">Ruiz Laurent;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Audry Stéphane&option=202" target="_blank" rel="nofollow">Audry Stéphane;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Subramanian S.&option=202" target="_blank" rel="nofollow">Subramanian S.;</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>Géosciences Environnement Toulouse (Université de Toulouse CNRS IRD)Toulouse France;</p> <p>Géosciences Environnement Toulouse (Université de Toulouse CNRS IRD)Toulouse France;</p> <p>Physical Research LaboratoryAhmedabad India;</p> <p>Géosciences Environnement Toulouse (Université de Toulouse CNRS IRD)Toulouse France;</p> <p>Géosciences Environnement Toulouse (Université de Toulouse CNRS IRD)Toulouse France;</p> <p>Géosciences Environnement Toulouse (Université de Toulouse CNRS IRD)Toulouse France;</p> <p>BRGM‐Service EauMontpellier France;</p> <p>Indo‐French Cell for Water Sciences IISc‐IRD Joint International Laboratory IIScBangalore India;</p> <p>Géosciences Environnement Toulouse (Université de Toulouse CNRS IRD)Toulouse France;</p> <p>Indo‐French Cell for Water Sciences IISc‐IRD Joint International Laboratory IIScBangalore India;</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=Upper Continental Crust&option=203" rel="nofollow">Upper Continental Crust;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=chemical weathering&option=203" rel="nofollow">chemical weathering;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=erosion&option=203" rel="nofollow">erosion;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=rare earth elements&option=203" rel="nofollow">rare earth elements;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=thorium&option=203" rel="nofollow">thorium;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=uranium&option=203" rel="nofollow">uranium;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=hydrologic sorting&option=203" rel="nofollow">hydrologic sorting;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Critical Zone&option=203" rel="nofollow">Critical Zone;</a> 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