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首页> 外文期刊>Journal of quaternary science: JQS >Characterization and correlation of the Hegawa‐Kasamori 5 tephra, a widespread tephra aged cc . 450 ka associated with large‐scale pyroclastic flows from southern Kyushu, SW Japan
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Characterization and correlation of the Hegawa‐Kasamori 5 tephra, a widespread tephra aged cc . 450 ka associated with large‐scale pyroclastic flows from southern Kyushu, SW Japan

机译：Hegawa-Kasamori 5 Tephra，普遍的Tephra老年人的表征和相关性 c c 。 450 ka与来自南部九州南部的大规模发球流相关的Ka

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ABSTRACT > A Middle Pleistocene widespread tephra, defined here as Hegawa‐Kasamori 5 tephra (Hgw‐Ks5), has been newly recognized over a broad area of Japan. Large‐scale pyroclastic flow deposits associated with co‐ignimbrite ash fall deposits (CAFDs) of Hgw‐Ks5 have been identified in the proximal southern Kyushu area, south‐west Japan. Hgw‐Ks5 possibly originated from the Aira caldera in southern Kyushu, and it is widely spread and intercalated with deposits of the Kasamori Formation, Honshu Island, more than 1000?km away from the source. In the north‐west area of the Aira Caldera, the tephra is sparsely distributed in the form of non‐welded ignimbrites, and is exposed stratigraphically above the well‐known Kobayashi‐Kasamori tephra. Hgw‐Ks5 is characterized through petrographic features, major element geochemistry of glass shards, and refractive indices of orthopyroxene. The results of previous stratigraphic isotope studies indicate that the eruptive age of Hgw‐Ks5 is 434–458 ka (Marine Isotope Stage 12). Assuming that the CAFDs originating from the Aira Caldera are distributed concentrically, the apparent volume of Hgw‐Ks5, estimated from the area of distribution and CAFD thickness, is ~100?km 3 . Therefore, a volcanic explosivity index of 7 is assigned to the Hgw‐Ks5 eruption. </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 XML：lang =“en”type =“main”> <标题类型=“main”>抽象</ title> > 在此处定义为赫格瓦 - 喀萨马岛5 Tephra（HGW-KS5）的中间人兴奋的Tephra，已经在日本广泛的地区新认可。日本西南部九州南部南部南部南部南部南部南部南部南部九州地区，大规模的Pyroclastic流量沉积物相关联的HGW-KS5。 HGW-KS5可能源于九州南部的Aira Caldera，它广泛传播和嵌入着Honshu岛的Kasamori Checulation的沉积物，远离源头1000多厘米。在Aira Caldera的西北地区，Tephra以非焊接Ignimbrites的形式稀疏地分布，并在众所周知的Kobayashi-Kasamori Tephra暴露于地层上。 HGW-KS5的特点是通过岩体特征，玻璃碎片的主要元素地球化学和折射率的矫形索。先前地层同位素研究的结果表明，HGW-KS5的喷发年龄是434-458ka（海洋同位素第12阶段）。假设源自Aira Caldera的CAFD是同心分布的，从分布和CAFD厚度估计的HGW-KS5的表观体积为〜100？Km 3 </ sup> 。因此，将7的火山爆炸性指数分配给HGW-KS5喷发。 </ 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-35770/'>《Journal of quaternary science: JQS》</a> <b style="margin: 0 2px;">|</b><span>2020年第2期</span><b style="margin: 0 2px;">|</b><span>共16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=Nishizawa Fumikatsu&option=202" target="_blank" rel="nofollow">Nishizawa Fumikatsu;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Suzuki Takehiko&option=202" target="_blank" rel="nofollow">Suzuki Takehiko;</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>Kanagawa Prefectural Museum of Natural History499 Iriuda Odawara City Kanagawa 2500031 Japan;</p> <p>Department of GeographyTokyo Metropolitan UniversityMinamiosawa 1‐1 Hachioji City Tokyo 1920397 Japan;</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/27341.html" title="第四纪（系）">第四纪（系）;</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=large‐scale pyroclastic flow&option=203" rel="nofollow">large‐scale pyroclastic flow;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Middle Pleistocene&option=203" rel="nofollow">Middle Pleistocene;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=southern Kyushu&option=203" rel="nofollow">southern Kyushu;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=tephrochronology&option=203" rel="nofollow">tephrochronology;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=widespread tephra&option=203" rel="nofollow">widespread tephra;</a> </p> <div class="translation"> 机译：大规模的吡罗基痉挛;中间人超细胞;九州南部;tephrochronologrol;普遍的tephra; </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> 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