Collaborative Research: Timescales of Continental Magmatism and Development of Large Silicic Systems: Insights from Accessory Phases

合作研究:大陆岩浆作用的时间尺度和大型硅质系统的发育:来自附属相的见解

基本信息

  • 批准号:
    0838536
  • 负责人:
  • 金额:
    $ 29.9万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
    Standard Grant
  • 财政年份:
    2009
  • 资助国家:
    美国
  • 起止时间:
    2009-07-01 至 2013-06-30
  • 项目状态:
    已结题

项目摘要

"This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5)."Intellectual Merit. This project will address the time scales of assembly and the organization of batholith-scale silicic magma systems in the Altiplano Puna Volcanic Complex (APVC) of the Central Andes. The proposed work builds on recent efforts that explore the recognition of large silicic volcanic fields (LSVFs) as windows into the tops of upper crustal batholiths that are the foundations of the continental crust. The space-time-volume record of volcanism indicates that LSVFs develop during magmatic flare-ups and erupt episodically as pulses of parallel supereruptions that become more intense with time. This record is often assumed to mirror the accumulation record of the associated upper crustal batholith. However, key questions about the link between the volcanic and plutonic realms remain to be addressed if this view is to be substantiated. Among these are: (1) What does the surface pattern of volcanism imply concerning the development of plutonic systems at depth? Do these eruptions represent evacuation from a distinct batch of magma that formed just prior to eruption or do they represent the periodic tapping of a long lived regional magma body? (2) What does the cyclicity of large caldera systems and the regional concordance of eruptions imply concerning the development of the magmatic systems beneath? Does the repose period represent the time scale of development of the next magma batch or does the erupted magma develop in a timescale much shorter than the repose period. 3) What does the self-organization of single batholithic scale magmatic systems, for instance the development of a zoned system, tell us about the dynamics and time scales over which these systems differentiate and evolve? Building on the maturing space-time-volume record of the APVC, these issues will be examined by specifically focusing on three hypotheses: (1) Supereruptions in the APVC evacuated distinct magma batches that accumulated within a few hundred thousand years prior to eruption; (2) The repose period of cyclic supervolcanic systems is considerably longer than the time scale to develop the next eruptible magma batch; and (3) Batholith scale-silicic magma chambers can develop significant zonations on time scales of a few hundred thousand years. These ideas will be evaluated on the basis of geochronology, trace element geochemistry, and thermometry of accessory phases most notably zircon (for which preliminary data suggest strong likelihood of success of this proposal.Broader Impacts. The proposed work is timely and will be of broad interest because time scales of construction and evolution of large silicic magmatic systems, the volcano-plutonic connection and the development of supervolcanoes have been the subject of considerable discussion in recent years. Moreover, this project is complemented by other studies in the region. The PI?s are collaborating on an investigation of the Cerro Galan resurgent caldera complex in Argentina, and Oregon State University colleague Anita Grunder is working on similar problems at the Aucanquilcha Volcanic Cluster, Chile. Combination of these datasets will facilitate comparison across different scales of systems and provide a Central Andean wide perspective. International collaboration will allow the lead PI to continue his collaboration and mentoring of a burgeoning Bolivian volcanological group focused on the APVC. Publication and dissemination of the scientific results, the training of a graduate and an undergraduate student, and incorporation of content into future coursework all amplify the broader impacts. Moreover, dissemination of results through in-service and pre-service teacher-workshops with the SMILE program in Oregon and the high profile VolcanoWorld website will transmit findings to the larger informal scientific audience and K-U constituency.
“该奖项是根据2009年美国复苏和再投资法案(公法111-5)资助的。“智力优势。该项目将探讨安第斯山脉中部普纳高原火山复合体中岩基规模的火山岩浆系统的聚集和组织的时间尺度。拟议的工作建立在最近的努力,探索认识到大型火山岩场(LSVFs)的窗口,进入上地壳岩基的顶部,是大陆地壳的基础。火山活动的空间-时间-体积记录表明,LSVFs在岩浆爆发期间发展,并作为平行超喷发的脉冲间歇性爆发,随着时间的推移变得更加强烈。这种记录通常被认为反映了相关的上地壳岩基的积累记录。然而,如果要证实这一观点,关于火山和深成领域之间联系的关键问题仍有待解决。这些问题包括:(1)火山作用的表面模式对深部深成岩系的发展意味着什么?这些喷发是否代表了在喷发前形成的一批独特的岩浆的疏散,或者它们代表了一个长期存在的区域岩浆体的周期性挖掘?(2)大破火山口系统的周期性和区域一致性的喷发意味着什么关于下面的岩浆系统的发展?休止期是否代表下一批岩浆发展的时间尺度,或者喷发的岩浆发展的时间尺度比休止期短得多。3)单一岩基规模岩浆系统的自组织,例如分区系统的发展,告诉我们这些系统分化和演化的动力学和时间尺度是什么?基于APVC成熟的时空体积记录,这些问题将通过特别关注三个假设来研究:(1)APVC中的超级火山喷发疏散了在喷发前几十万年内积累的不同岩浆批次:(2)循环超级火山系统的静止期远长于发展下一个可喷发岩浆批次的时间尺度;(3)在几十万年的时间尺度上,岩石规模-岩浆房可形成明显的分带。这些想法将在地质年代学、微量元素地球化学和副相温度测量的基础上进行评估,最主要的是锆石(初步数据表明,这一建议很有可能成功。拟议的工作是及时的,将引起广泛的兴趣,因为大型岩浆系统的建设和演化的时间尺度,火山-深成岩连接和超级火山的发展一直是近年来大量讨论的主题。此外,该项目还得到该区域其他研究的补充。私家侦探?他们正在合作调查阿根廷的Cerro Galan火山口复合体,俄勒冈州州立大学的同事Anita Grunder正在智利的Aucanquilcha火山群研究类似的问题。这些数据集的结合将有助于不同规模的系统之间的比较,并提供一个安第斯中部的广泛视角。国际合作将使首席PI能够继续与一个专注于APVC的新兴玻利维亚火山学小组合作和指导。科学成果的出版和传播,研究生和本科生的培训,以及将内容纳入未来的课程都扩大了更广泛的影响。此外,通过在职和职前教师讲习班与俄勒冈州的SMILE计划和高调的VolcanoWorld网站的结果传播将传送到更大的非正式科学观众和K-U选区的调查结果。

项目成果

期刊论文数量(0)
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Shanaka de Silva其他文献

ダイナミックに運動する微粒子の計測
动态运动粒子的测量
  • DOI:
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
    0
  • 作者:
    東宮 昭彦;後藤 芳彦;檀原 徹;Shanaka de Silva;日本地球惑星科学連合(共編著);Yoshifumi Saitou;Yoshifumi Saitou;齋藤和史
  • 通讯作者:
    齋藤和史
プラズマ中の微粒子の帯電量への イオン-中性粒子衝突とイオン温度の効果
离子-中性粒子碰撞和离子温度对等离子体中细粒子带电量的影响
  • DOI:
  • 发表时间:
    2019
  • 期刊:
  • 影响因子:
    0
  • 作者:
    東宮 昭彦;後藤 芳彦;檀原 徹;Shanaka de Silva;日本地球惑星科学連合(共編著);Yoshifumi Saitou;Yoshifumi Saitou;齋藤和史;齋藤和史
  • 通讯作者:
    齋藤和史
Feedback between magma decompression rate and lubrication of crystal-rich silicic magmas controls eruption style
岩浆减压速率与富晶硅质岩浆润滑之间的反馈控制喷发方式
  • DOI:
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Satoshi Okumura;Shanaka de Silva;Michihiko Nakamura;Osamu Sasaki
  • 通讯作者:
    Osamu Sasaki
ダイヤモンドアンビルセルを用いた含水ウォズレアイト単結晶の高圧その場 IR 観察
使用金刚石砧池对水合硅锰矿单晶进行高压原位红外观察
  • DOI:
  • 发表时间:
    2020
  • 期刊:
  • 影响因子:
    0
  • 作者:
    Satoshi Okumura;Shanaka de Silva;Michihiko Nakamura;Osamu Sasaki;辻野典秀
  • 通讯作者:
    辻野典秀
微粒子の新しい平均帯電量評価法
评价细颗粒平均带电量的新方法
  • DOI:
  • 发表时间:
    2018
  • 期刊:
  • 影响因子:
    0
  • 作者:
    東宮 昭彦;後藤 芳彦;檀原 徹;Shanaka de Silva;日本地球惑星科学連合(共編著);Yoshifumi Saitou;Yoshifumi Saitou;齋藤和史;齋藤和史;Yoshifumi Saitou;齋藤和史
  • 通讯作者:
    齋藤和史

Shanaka de Silva的其他文献

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{{ truncateString('Shanaka de Silva', 18)}}的其他基金

Pre-eruptive magma assembly, evolution and associated magma fluxes at arc calderas: insights from the active Cerro Blanco Volcanic Complex, Catamarca, Argentina.
弧火山口喷发前的岩浆聚集、演化和相关岩浆通量:来自阿根廷卡塔马卡活跃的塞罗布兰科火山群的见解。
  • 批准号:
    2243737
  • 财政年份:
    2023
  • 资助金额:
    $ 29.9万
  • 项目类别:
    Continuing Grant
Timing, Rates and History of Post-YTT (<74ka) Resurgent Uplift of Samosir Island, Toba, Sumatra
YTT 后的时间、费率和历史记录 (
  • 批准号:
    1551187
  • 财政年份:
    2016
  • 资助金额:
    $ 29.9万
  • 项目类别:
    Continuing Grant
Sinabung Volcano, Sumatra: Testing the link to the Toba Supervolcano
苏门答腊岛锡纳朋火山:测试与多巴超级火山的联系
  • 批准号:
    1445634
  • 财政年份:
    2014
  • 资助金额:
    $ 29.9万
  • 项目类别:
    Standard Grant
Increasing Diversity in the Earth Sciences (IDES) - A Track 2 Project
增加地球科学的多样性 (IDES) - 第 2 轨道项目
  • 批准号:
    0914707
  • 财政年份:
    2010
  • 资助金额:
    $ 29.9万
  • 项目类别:
    Continuing Grant
Collaborative Research: Investigating the Relationship Between Pluton Growth and Volcanism at Two Active Intrusions in the Central Andes
合作研究:调查安第斯山脉中部两个活跃侵入体的岩体生长与火山活动之间的关系
  • 批准号:
    0908324
  • 财政年份:
    2009
  • 资助金额:
    $ 29.9万
  • 项目类别:
    Standard Grant
Collaborative Research: Spatiotemporal Evolution of the Neogene Ignimbrite Flare-up in the Altiplano-Puna Volcanic Complex, Central Andes: Insights into the Development of Large
合作研究:安第斯山脉中部高原-普纳火山群中新近纪火辉岩爆发的时空演化:深入了解大型火山岩的发展
  • 批准号:
    0710545
  • 财政年份:
    2006
  • 资助金额:
    $ 29.9万
  • 项目类别:
    Continuing Grant
Collaborative Research: Spatiotemporal Evolution of the Neogene Ignimbrite Flare-up in the Altiplano-Puna Volcanic Complex, Central Andes: Insights into the Development of Large
合作研究:安第斯山脉中部高原-普纳火山群中新近纪火辉岩爆发的时空演化:深入了解大型火山岩的发展
  • 批准号:
    0538206
  • 财政年份:
    2006
  • 资助金额:
    $ 29.9万
  • 项目类别:
    Continuing Grant
RUI: Dynamics of Plinian Eruptions - Physical Volcanology of the 1600 Eruption of Volcan Huaynaputina, Southern Peru
RUI:普林尼式喷发的动力学 - 1600 年秘鲁南部 Huaynaputina 火山喷发的物理火山学
  • 批准号:
    0296108
  • 财政年份:
    2001
  • 资助金额:
    $ 29.9万
  • 项目类别:
    Standard Grant
RUI: Dynamics of Plinian Eruptions - Physical Volcanology of the 1600 Eruption of Volcan Huaynaputina, Southern Peru
RUI:普林尼式喷发的动力学 - 1600 年秘鲁南部 Huaynaputina 火山喷发的物理火山学
  • 批准号:
    0087181
  • 财政年份:
    2001
  • 资助金额:
    $ 29.9万
  • 项目类别:
    Standard Grant
RUI: The 1600 A.D. Eruption of Huaynaputina: Volcanology, Petrology and Environmental Impact
RUI:公元 1600 年 Huaynaputina 喷发:火山学、岩石学和环境影响
  • 批准号:
    9614405
  • 财政年份:
    1997
  • 资助金额:
    $ 29.9万
  • 项目类别:
    Standard Grant

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