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首页> 外文期刊>Geochemistry, geophysics, geosystems >Volcanic‐Tectonic Structure of the Mount Dent Oceanic Core Complex in the Ultraslow Mid‐Cayman Spreading Center Determined From Detailed Seafloor Investigation
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Volcanic‐Tectonic Structure of the Mount Dent Oceanic Core Complex in the Ultraslow Mid‐Cayman Spreading Center Determined From Detailed Seafloor Investigation

机译：Ultraslow中间Cayman传播中心的Mount Dent海洋核心复合体的火山构造结构从详细的海底调查确定

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Abstract >The flanks of the ultraslow‐spreading Mid‐Cayman Spreading Center (MCSC) are characterized by domal massifs or oceanic core complexes (OCCs). The most prominent of these, Mount Dent, comprises lower‐crustal and upper‐mantle lithologies and hosts the Von Damm vent field ~12?km west of the axial deep. Here, presented autonomous underwater vehicle‐derived swath sonar (multibeam) mapping and deep‐towed side‐scan sonar imagery lead to our interpretation that: (i) slip along the OCC‐bounding detachment fault is ceasing, (ii) the termination zone, where detachment fault meets the hanging wall, is disintegrating, (iii) the domed surface of the OCC is cut by steep north‐south extensional faulting, and (iv) the breakaway zone is cut by outward facing faults. The Von Damm vent field and dispersed pockmarks on the OCC's south flank further suggest that hydrothermal fluid flow is pervasive within the faulted OCC. On the axial floor of the MCSC, bright acoustic backscatter and multibeam bathymetry reveal: (v) a volcanic detachment hanging wall, (vi) a major fault rifting the southern flank of Mount Dent, and (vii) a young axial volcanic ridge intersecting its northern flank. These observations are described by a conceptual model wherein detachment faulting and OCC exhumation are ceasing during an increase in magmatic intrusion, brittle deformation, and hydrothermal circulation within the OCC. Together, this high‐resolution view of the MCSC provides an instructive example of how OCCs, formed within an overall melt‐starved ultraslow spreading center, can undergo magmatism, hydrothermal activity, and faulting in much the same way as expected in magmatically more robust slow‐spreading centers elsewhere. </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> >超声波展开的中割鳄鱼蔓延中心（MCSC）的侧面特征在于Domal Massifs或海洋核心复合物（OCCS）。这些最突出的凹陷包括较低地壳和上部地幔岩性，并托管轴向深的von damm排气场〜12？km。在这里，提出了自主水下车辆推导的Swath Sonar（MultiBeam）映射和深牵引侧扫描声纳图像导致我们的解释：（i）沿着OCC界限故障滑动是停止的，（ii）终止区，如果分离断层符合悬挂墙，则崩解，（iii）OCC的圆顶表面被陡峭的南北延伸断层切割，（iv）通过向外的故障切割分离区域。 OCC的南侧侧面的Von Damm排气场和分散的麻袋进一步表明水热流体流动在断层的OCC内是普遍存在的。在MCSC的轴向地板上，明亮的声学反向散射和多阵线沐浴露，揭示：（v）火山支架悬挂墙，（vi）一个主要的断层剥离凹陷的南侧侧面，（vii）一个年轻的轴向火山脊相结合北侧。这些观察结果由概念模型描述，其中脱离故障和OCC散发在OCC内的岩石侵入，脆性变形和水热循环的增加期间停滞。作为MCSC的这种高分辨率视图提供了一种在整体熔体饥饿的超声扩展中心内的OVEN的指导例，可以在Magicicicalic地更强大的速度下预期的方式进行岩浆，水热活动和断层。 - 其他地方的居住。</ 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>2019年第3期</span><b style="margin: 0 2px;">|</b><span>共21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=Haughton G. A.&option=202" target="_blank" rel="nofollow">Haughton G. A.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Hayman N. W.&option=202" target="_blank" rel="nofollow">Hayman N. W.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Searle R. C.&option=202" target="_blank" rel="nofollow">Searle R. C.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Le Bas T.&option=202" target="_blank" rel="nofollow">Le Bas T.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Murton B. J.&option=202" target="_blank" rel="nofollow">Murton B. J.;</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 Ocean and Earth SciencesUniversity of SouthamptonSouthampton UK;</p> <p>Institute for Geophysics Jackson School for GeosciencesUniversity of TexasAustin TX USA;</p> <p>Department of Earth SciencesDurham UniversityDurham UK;</p> <p>National Oceanography CenterSouthampton UK;</p> <p>National Oceanography CenterSouthampton UK;</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=Oceanic Core Complex&option=203" rel="nofollow">Oceanic Core Complex;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=detachment fault&option=203" rel="nofollow">detachment fault;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=ultraslow spreading ridge&option=203" rel="nofollow">ultraslow spreading ridge;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=mid‐ocean ridge&option=203" rel="nofollow">mid‐ocean ridge;</a> </p> <div class="translation"> 机译：海洋核心复合物;分离错误;超声波蔓延山脊;中海山脊; </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> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704023360439.html">Volcanic‐Tectonic Structure of the Mount Dent Oceanic Core Complex in the Ultraslow Mid‐Cayman Spreading Center Determined From Detailed Seafloor Investigation</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Haughton G. 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