One Million Years tephra record at IODP Sites U1436 and U1437: Insights into explosive volcanism from the Japan and Izu arcs
One Million Years tephra record at IODP Sites U1436 and U1437: Insights into explosive volcanism from the Japan and Izu arcs
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IODP 站点 U1436 和 U1437 的一百万年火山灰记录：深入了解日本和伊豆弧的爆发性火山活动
DOI：
10.1111/iar.12244
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发表时间：
2018
期刊：
影响因子：
1.5
通讯作者：
Mleneck- Vautravers
中科院分区：
文献类型：
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作者：
Schindlbeck;Kutterolf;Straub;Andrews G.D.M;Mleneck- Vautravers
对伊豆-小笠原弧前弧和弧后IODP（国际海洋发现计划）U1436 A和U1437 B孔的100万年火山喷发记录进行了调查，以分别评估物源和喷发量。总共检查了304个火山灰样品，并确定了260个初级火山灰层。通过玻璃碎片的主量和微量元素组成确定火山灰的来源，并区分火山灰层的日本和伊豆-小笠原弧起源。共有33个海相火山碎屑成分与日本弧和227个与伊豆弧相关。20海洋火山灰层之间的两个钻井现场进行了对比。此外，我们定义了11个海洋火山喷发沉积物与日本大规模爆发的相关性;从1.05 Ma的Shishimuta-Pink火山喷发到30 ka的Aira-Tn火山喷发，两者都来自九州岛。这些喷发提供了独立的时间标记内的沉积物记录和六个相关的日期火山灰层从日本在孔U1436 A建立一个替代的年龄模型，这个洞。此外，计算了所有检测到的事件的最小远端火山灰体积，这使得能够比较来自日本和伊豆-小笠原弧的火山灰体积。对于日本的一些主要喷发，这些是第一次包括远端沉积物的体积估计。所有日本火山岩都来自Mv≥ 5.6级的喷发事件，其中三次调查的喷发达到了Mv≥ 7级。伊豆-小笠原弧的火山事件多为Mv≤ 5级。
The 1 Myr tephra records of IODP (International Ocean Discovery Program) Holes U1436A and U1437B in the Izu‐Bonin fore‐ and reararc were investigated in order to assess provenance and eruptive volumes, respectively. In total, 304 tephra samples were examined and 260 primary tephra layers were identified. Tephra provenance was determined by means of major and trace element compositions of glass shards and distinguished between Japan and Izu‐Bonin arc origin of the tephra layers. A total of 33 marine tephra compositions were correlated to the Japan arc and 227 to the Izu arc. Twenty marine tephra layers were correlated between the two drilling sites. Additionally, we defined eleven correlations of marine tephra deposits to major widespread Japanese eruptions; from the 1.05 Ma Shishimuta‐Pink Tephra to the 30 ka Aira‐Tn Tephra, both from Kyushu Island. These eruptions provide independent time markers within the sediment record and six correlations were used to date tephra layers from Japan in Hole U1436A to establish an alternative age model for this hole. Furthermore, the minimum distal tephra volumes of all detected events were calculated, which enabled the comparison of the tephra volumes that derived from the Japan and the Izu‐Bonin arcs. For some of the major Japanese eruptions these are the first volume estimations that also include distal deposits. All of the Japanese tephras derived from events with eruption magnitude Mv≥ 5.6 and three of the investigated eruptions reach magnitudes Mv≥ 7. Volcanic events of the Izu‐Bonin arc have mostly eruption magnitudes Mv≤ 5.
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影响因子：
--
作者：
T. Yokoyama;K. Kobayashi;T. Kuritani;E. Nakamura
通讯作者：
T. Yokoyama;K. Kobayashi;T. Kuritani;E. Nakamura
影响因子：
3.9
作者：
Y. Tamura;K. Tani;Q. Chang;H. Shukuno;H. Kawabata;O. Ishizuka;R. Fiske
通讯作者：
Y. Tamura;K. Tani;Q. Chang;H. Shukuno;H. Kawabata;O. Ishizuka;R. Fiske
日本八丈岛海底八丈西北火山链的岩浆管道：长距离岩浆输送？
影响因子：
--
作者：
O. Ishizuka;N. Geshi;J. Itoh;Y. Kawanabe;Taqumi Tuzino
通讯作者：
Taqumi Tuzino
火山灰秋季沉积物最小体积的评估
影响因子：
2.9
作者：
D. Pyle
通讯作者：
D. Pyle
伊豆-小笠原前弧的火山灰（遗址 787、792 和 793）
影响因子：
3.5
作者：
K. Fujioka;Y. Matsuo;A. Nishimura;M. Koyama;K. Rodolfo
通讯作者：
K. Rodolfo