Sediment Provenance Changes in the Western Arctic Ocean in Response to Ice Rafting, Sea Level, and Oceanic Circulation Variations Since the Last Deglaciation

Deschamps Charles‐Edouard; Montero‐Serrano Jean‐Carlos; St‐Onge Guillaume

摘要

Abstract >Two sediment piston cores were recovered from the Chukchi‐Alaskan (05JPC) and Canadian Beaufort (02PC) margins to investigate grain‐size, geochemical, and mineralogical compositions. This allowed the reconstruction of changes in detrital sediment provenance and transport related to climate variability since the last deglaciation. The end‐member modeling analyses of grain size indicate that sea ice and nepheloid transport and the Mackenzie River sediment plume are major factors influencing sedimentation in the Chukchi‐Alaskan and Canadian Beaufort margins, respectively. Unmixing of the sediment composition indicates that detrital sediments in core 02PC are derived mainly from the Mackenzie River, whereas sediments from core 05JPC are derived mainly from the Mackenzie River during the deglaciation and include a mixture of Holocene sediments from the Bering Strait, Mackenzie River, and Eurasian margin. The dolomite‐rich ice‐rafted debris recorded in both cores could be related to the different phases of iceberg discharges from the Amundsen Gulf Ice Stream. Quartz and feldspar‐rich ice‐rafted debris dated at 13 and 10.6?ka?cal BP (before present) are related to the Lake Agassiz outburst in core 02PC and meltwater discharge from the Brooks Range glaciers in core 05JPC. Detrital proxies in core 02PC support the hypothesis that large meltwater and iceberg discharges from the Lake Agassiz outburst to the Arctic Ocean and Amundsen Gulf ice stream may have triggered the Younger Dryas. Finally, similar trends observed between sea level curves and our detrital proxy suggest that the sea level changes in the western Arctic Ocean have an important influence on the sediment dynamic during the early to middle Holocene. </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> <P>两个沉积物活塞芯从Chukchi-Alaskan（05JPC）和加拿大博览会（02PC）余量中回收，以研究晶粒尺寸，地球化学和矿物质组合物。这允许自上次解析以来，重建与气候变异性有关的脱皱沉积物出处和运输的变化。晶粒尺寸的最终成员建模分析表明海冰和尼触管运输和Mackenzie河沉积物羽流分别是影响Chukchi-Alaskan和Canadian Beaufort边缘沉降的主要因素。沉积物组合物的脱胶表明核心02pc中的脱乳沉积物主要来自Mackenzie河，而核心05JPC的沉积物主要来自麦肯尼河在解中，包括来自白克西河，麦肯齐河的全茂沉积物的混合物，和欧亚边缘。记录在两种核中的白云石的冰圆形碎片可能与来自Amundsen海湾冰流的冰山排出的不同阶段有关。在13和10.6的石英和丰富的富钴冰碎片？KA？Cal BP（之前）与核心02pc湖中的Agassiz爆发湖与核心05JPC中的布鲁克斯范围冰川中的熔融水排放有关。核心02PC中的脱果代理支持这一假设，即大型熔融和冰山排放到Agassiz爆发到北冰洋和Amundsen海湾冰河的爆发可能引发了较年轻的Dratas。最后，海平面曲线与邪卓人队之间观察到的类似趋势表明西北北北京海水位的变化对早期至州沉积物动力有重要影响。</ 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7期</span><b style="margin: 0 2px;">|</b><span>共19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=Deschamps Charles‐Edouard&option=202" target="_blank" rel="nofollow">Deschamps Charles‐Edouard;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Montero‐Serrano Jean‐Carlos&option=202" target="_blank" rel="nofollow">Montero‐Serrano Jean‐Carlos;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=St‐Onge Guillaume&option=202" target="_blank" rel="nofollow">St‐Onge Guillaume;</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>Institut des sciences de la mer de RimouskiUniversité du Québec à RimouskiRimouski Québec Canada;</p> <p>Institut des sciences de la mer de RimouskiUniversité du Québec à RimouskiRimouski Québec Canada;</p> <p>Institut des sciences de la mer de RimouskiUniversité du Québec à RimouskiRimouski Québec Canada;</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=bulk and clay mineralogy&option=203" rel="nofollow">bulk and clay mineralogy;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=elemental geochemistry&option=203" rel="nofollow">elemental geochemistry;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=grain‐size distribution&option=203" rel="nofollow">grain‐size distribution;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=sediment provenance&option=203" rel="nofollow">sediment provenance;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Canadian Beaufort Sea&option=203" rel="nofollow">Canadian Beaufort Sea;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Chukchi Sea&option=203" rel="nofollow">Chukchi Sea;</a> </p> <div class="translation"> 机译：散装和粘土矿物学;元素地球化学;晶粒大小分布;沉积物源;加拿大博福特海;Chukchi海; </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" 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