The origin of volcanic flux variations along Pacific hotspot tracks: Plume-lithosphere interaction vs. plume pulsations
沿太平洋热点轨迹火山通量变化的起源:羽流-岩石圈相互作用与羽流脉动
基本信息
- 批准号:426542039
- 负责人:
- 金额:--
- 依托单位:
- 依托单位国家:德国
- 项目类别:Research Grants
- 财政年份:2019
- 资助国家:德国
- 起止时间:2018-12-31 至 2020-12-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The volcanic flux at the Hawaiian hotspot generally increased over the last 30-80 Ma, with second-order variations over 10~15 Ma. This significant increase remains unexplained by classic plume theory, which predicts that a plume-head stage with massive volcanic activity is followed by a plume- tail stage with ever decreasing activity. In particular, 25-30 Ma ago there was a sharp increase in the Hawaiian volcanic flux by a factor ~4 that appears to be associated with an increase in Pacific plate motion from ~60 km/Ma to ~100 km/Ma. At about the same time there was a surge across the South Pacific of young low-volume hotspot tracks. It is unclear from our understanding of the poorly sampled Hawaiian track if these volcanic flux variations are related to speed up of the Pacific plate or to pulsations of the Hawaiian plume. In order to explain the coupled observations of faster plate speed and increased volcanic flux we aim to explore three young, relatively low-volume Pacific hotspot tracks. High–precision geochronological data for multiple hotspot tracks is the only way of extracting fundamental new information from the intraplate record about the poorly-sampled young end of the Hawaiian hotspot track. We propose to determine high-precision ages using the next generation of multi-collector mass spectrometer for 111 samples from the Foundation, Easter and Pukapuka-Rano Rahi volcanic tracks. We will use these new data to (1) pinpoint the timing of Pacific plate-speed increases and variations in hotspot volcanic flux, and (2) understand the underlying mechanisms controlling volcanic flux variations at Pacific hotspots.
夏威夷热点的火山通量在最近30 ~ 80 Ma总体呈增加趋势,在10~15 Ma呈二阶变化。经典的羽流理论仍然无法解释这种显著的增长,该理论预测,伴随着大规模火山活动的羽流头阶段之后是活动不断减少的羽流尾阶段。特别是在25-30 Ma以前,夏威夷火山通量急剧增加了4倍,这似乎与太平洋板块运动从~60 km/Ma增加到~100 km/Ma有关。大约在同一时间,南太平洋出现了一个年轻的低容量热点轨道。从我们对夏威夷轨迹取样不足的理解来看,尚不清楚这些火山通量的变化是否与太平洋板块的加速或夏威夷羽流的脉动有关。为了解释板块速度加快和火山流量增加的耦合观测结果,我们的目标是探索三个年轻的、相对小容量的太平洋热点路径。多热点径迹的高精度地质年代学数据是从夏威夷热点径迹样本较少的年轻端板内记录中提取基本新信息的唯一方法。我们建议使用下一代多收集器质谱仪对来自Foundation、Easter和Pukapuka-Rano Rahi火山轨迹的111个样品进行高精度年龄测定。我们将利用这些新数据:(1)确定太平洋板块速度增加和热点火山通量变化的时间;(2)了解控制太平洋热点火山通量变化的潜在机制。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Privatdozent Dr. Marcel Regelous其他文献
Privatdozent Dr. Marcel Regelous的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Privatdozent Dr. Marcel Regelous', 18)}}的其他基金
Investigating the relationship between flood basalt volcanism, climate change and mass extinction using novel proxies for volcanism in marine sediments ('MagmaTrace')
使用海洋沉积物中火山活动的新代理来研究溢流玄武岩火山活动、气候变化和大规模灭绝之间的关系(“MagmaTrace”)
- 批准号:
289855671 - 财政年份:2016
- 资助金额:
-- - 项目类别:
Research Units
Tectonic origin of supra-subduction zone ophiolites from the three-dimensional geochemical structure of the lava pile
从熔岩堆三维地球化学结构看超俯冲带蛇绿岩的构造成因
- 批准号:
290488493 - 财政年份:2015
- 资助金额:
-- - 项目类别:
Research Grants
The lead isotope composition of the Earth´s mantle from double-spike analysis of abyssal peridotites
深海橄榄岩双尖峰分析的地幔铅同位素组成
- 批准号:
200181798 - 财政年份:2011
- 资助金额:
-- - 项目类别:
Research Grants
Chemical and thermal evolution of the upper mantle; implications for Earth's climate and biosphere and the nature of mantle convection
上地幔的化学和热演化;
- 批准号:
141928429 - 财政年份:2009
- 资助金额:
-- - 项目类别:
Infrastructure Priority Programmes
Correlating continental flood basalt volcanism, environmental change, and mass extinction events at high resolution using novel geochemical proxies in sediments
使用沉积物中的新型地球化学代理以高分辨率关联大陆洪水玄武岩火山作用、环境变化和大规模灭绝事件
- 批准号:
469078255 - 财政年份:
- 资助金额:
-- - 项目类别:
Research Grants
相似国自然基金
西秦岭晚中生代钾质火山岩的成因及其印度-欧亚大陆碰撞前、后岩石圈变化的火山岩约束
- 批准号:40572046
- 批准年份:2005
- 资助金额:39.0 万元
- 项目类别:面上项目
相似海外基金
Exploring volcanic arcs as factories of critical minerals
探索火山弧作为关键矿物工厂
- 批准号:
FT230100230 - 财政年份:2024
- 资助金额:
-- - 项目类别:
ARC Future Fellowships
Magmatic system structure and seismicity of the Three Sisters volcanic complex
三姐妹火山杂岩岩浆系统结构与地震活动
- 批准号:
2342525 - 财政年份:2024
- 资助金额:
-- - 项目类别:
Continuing Grant
VOLCANIC CLASSIC: VOLCANIC eruptions and CLimAte response - Stratospheric Sulfate isotopes in Ice Cores, data assimilation, and climate sensitivity
火山经典:火山喷发和气候响应 - 冰芯中的平流层硫酸盐同位素、数据同化和气候敏感性
- 批准号:
EP/Z000645/1 - 财政年份:2024
- 资助金额:
-- - 项目类别:
Research Grant
Development and application of 40Ar/39Ar dating methods for young volcanic rocks
年轻火山岩40Ar/39Ar测年方法的开发与应用
- 批准号:
24K17153 - 财政年份:2024
- 资助金额:
-- - 项目类别:
Grant-in-Aid for Early-Career Scientists
Collaborative Research: Halogen Behavior In the Pluton-to-Volcanic Arc System
合作研究:岩体-火山弧系统中的卤素行为
- 批准号:
2400028 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: Evolution of the Tristan-Gough-Walvis Ridge Hotspot System: Age and Composition of Expedition 391/397T Volcanic Basement
合作研究:特里斯坦-高夫-沃尔维斯海岭热点系统的演化:391/397T 探险队火山基底的年龄和成分
- 批准号:
2317553 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: Evolution of the Tristan-Gough-Walvis Ridge Hotspot System: Age and Composition of Expedition 391/397T Volcanic Basement
合作研究:特里斯坦-高夫-沃尔维斯海岭热点系统的演化:391/397T 探险队火山基底的年龄和成分
- 批准号:
2317552 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Standard Grant
Collaborative Research: The interplay of surface evolution, shallow magmatism, a large hydrothermal system, and hazards at Puyehue-Cordon Caulle Volcanic Complex, Chile
合作研究:智利 Puyehue-Cordon Caulle 火山群地表演化、浅层岩浆作用、大型热液系统和灾害的相互作用
- 批准号:
2317729 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Continuing Grant
A New Scientific Framework of Volcanic Eruptions based on Apatite U-Th Disequilibrium System
基于磷灰石U-Th不平衡体系的火山喷发新科学框架
- 批准号:
23H01265 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Grant-in-Aid for Scientific Research (B)
Identification and Separation of Volcanic and Natural Climate Variability Signals
火山和自然气候变化信号的识别和分离
- 批准号:
22KF0010 - 财政年份:2023
- 资助金额:
-- - 项目类别:
Grant-in-Aid for JSPS Fellows