Provenance and depositional processes of tephras and Tertiary volcaniclastic sandstones from IODP Expedition 322, Nankai Trough

南海海槽IODP 322探险队火山灰岩和第三系火山碎屑砂岩的物源和沉积过程

• 批准号: 179387903
• 负责人: Privatdozent Dr. Steffen Kutterolf
• 金额: --
• 依托单位: Forschungseinheit Magmatische und Hydrothermale Systeme
• 依托单位国家: 德国
• 项目类别: Infrastructure Priority Programmes
• 财政年份: 2010
• 资助国家: 德国
• 起止时间: 2009-12-31 至 2013-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/179387903?language=en
• 关键词: Provenance; depositional; processes; tephras; Tertiary

During IODP Expedition 322 at the Nankai Trough, sediments down to the early Miocene have been drilled which allow to constrain the physical, compositional and structural characteristics of the subduction input into the seismogenic zone. We will use our samples from this expedition and samples from other Nankai bore holes to establish a Nankai-wide tephrostratigraphy including correlations with deposits on land; to identify provenance sources comprising the Miocene to recent Japanese and Izu-Bonin arc segments; to determine temporal and spatial variations in volcanic glass compositions since the Miocene; to unravel depositional processes of the newly discovered middle Shikoku basin formation; and to investigate the element exchange during submarine alteration of volcanic glass. Our chronological framework will provide the basis for other on- and offshore volcanological, sedimentological and geophysical studies aimed to understand the role of input parameters in the Nankai Trough subduction processes.

在南海海槽的IODP 322考察期间，已钻探到早中新世的沉积物，这允许限制俯冲输入到孕震区的物理、成分和结构特征。我们将利用这次考察的样品和其他南海钻孔的样品，建立一个包括与陆地沉积物相关的南海范围的灰岩地层学;确定包括中新世到近代日本和伊豆-小笠原弧段的物源;确定中新世以来火山玻璃成分的时空变化;揭示新发现的四国盆地形成的沉积过程;探讨火山玻璃海底蚀变过程中的元素交换。我们的年代学框架将提供其他的基础上和近海火山学，沉积学和地球物理研究，旨在了解输入参数的作用，在南开海槽俯冲过程。

项目成果

Emplacement processes of submarine volcaniclastic deposits (IODP Site C0011, Nankai Trough)

海底火山碎屑沉积物的侵位过程（IODP Site C0011，南海海槽）

• DOI: 10.1016/j.margeo.2013.06.017
• 发表时间: 2013
• 期刊: Marine Geology
• 影响因子: 2.9
• 作者: Schindlbeck J.C;Kutterolf S;Freundt A;Scudder R.P. Pickering K.T;Murray R.W.
• 通讯作者: Murray R.W.

Large volume submarine ignimbrites in the Shikoku Basin: An example for explosive volcanism in the Western Pacific during the Late Miocene

• DOI: 10.1002/2014gc005263
• 发表时间: 2014-05
• 期刊: Geochemistry
• 影响因子: 3.7
• 作者: S. Kutterolf;J. Schindlbeck;R. Scudder;R. Murray;K. Pickering;A. Freundt;S. Labanieh;K. Heydolph;S. Saito;H. Naruse;M. Underwood;Huaichun Wu