MARGINS: The Explosive Volcanic History of the Central Oregon Cascades: Probing the Changing State of the Neogene Cascade Arc
边缘:俄勒冈中部喀斯喀特火山爆发的历史:探索新近纪喀斯喀特弧的变化状态
基本信息
- 批准号:1144555
- 负责人:
- 金额:$ 36.01万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2012
- 资助国家:美国
- 起止时间:2012-03-15 至 2018-02-28
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Subduction zones ? volcanically active regions where one tectonic plate is pushed beneath another ? are home to most of the Earth?s explosive volcanic eruptions. In large part this is because the magmas that are produced and erupted in subduction zones tend to be both richer in water and in silica, both of which increase the propensity for eruptions to be explosive. The Cascade margin, running from Mount Lassen in northern California to southern British Columbia is host to a number of well-known volcanoes such as Mount Hood, Mount St Helens and Mount Rainier as well as numerous other volcanic edifices, and much of the region is also heavily populated. Explosive eruptions have occurred in the recent history of the Cascades, examples include Mount St Helens in 1980 and the prehistoric eruption of Mount Mazama at Crater Lake ~7700 years ago. However, although these younger eruptions are well documented, less is known about the long-term explosive record of the Cascade subduction zone over longer timescales, and the forces that influence such explosive behavior. This project will help establish the long-term eruptive history of the Cascades in Central Oregon over the last 15 million years, by looking at volcanic rocks preserved within the Deschutes and Simtustus Formations of central Oregon. Many examples of ash fall and ash flow deposits that result from large explosive eruptions are preserved in these sequences, and they can be used to estimate the frequency, composition, age and size of large explosive eruptions in this section of the subduction zone. This research will use a combination of approaches, including field, geochronological, geochemical and petrological studies and will enable us to study changes in eruption rate, eruption size and chemical and isotopic composition through time and to compare this to the more recent behavior of the subduction zone.
俯冲带?一个构造板块被推到另一个构造板块之下的火山活跃地区?是地球上大部分生物的家园爆发性的火山爆发。在很大程度上,这是因为在俯冲带产生和喷发的岩浆往往富含水和二氧化硅,这两者都增加了喷发的倾向。喀斯喀特边缘从北方加州的拉森山延伸到不列颠哥伦比亚省的南部,是许多著名火山的所在地,如胡德山、圣海伦山和雷尼尔山,以及许多其他火山大厦,该地区大部分地区人口稠密。在喀斯喀特山脉的近代历史中,曾发生过爆炸性喷发,例如1980年的圣海伦火山和约7700年前火山口湖的马扎马火山的史前喷发。然而,尽管这些年轻的喷发有很好的记录,但对喀斯喀特俯冲带在更长时间尺度上的长期爆炸记录以及影响这种爆炸行为的力量知之甚少。 该项目将通过研究保存在俄勒冈州中部德舒特和西姆图斯组中的火山岩,帮助建立俄勒冈州中部喀斯喀特在过去1500万年的长期喷发历史。在这些层序中保存了许多由大规模爆发造成的火山灰下落和火山灰流沉积物的例子,它们可以用来估计俯冲带这一部分中大规模爆发的频率、成分、年龄和规模。这项研究将采用多种方法,包括实地、地质年代学、地球化学和岩石学研究,使我们能够研究喷发率、喷发规模以及化学和同位素组成随时间的变化,并将其与俯冲带最近的行为进行比较。
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)
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Adam Kent其他文献
Did the Hiawatha Light Rail Line Increase Single-Family Residential Property Values ?
海华沙轻轨线是否增加了单户住宅的房产价值?
- DOI:
- 发表时间:
2008 - 期刊:
- 影响因子:0
- 作者:
Adam Kent;Joseph Parilla - 通讯作者:
Joseph Parilla
Comment on ‘The magmatic architecture and evolution of the Chang’e-5 lunar basalts’
评《嫦娥五号月球玄武岩的岩浆结构与演化》
- DOI:
10.1016/j.jsames.2023.104505 - 发表时间:
2023 - 期刊:
- 影响因子:1.8
- 作者:
P. Wieser;Christy Till;Adam Kent;Matthew Gleeson - 通讯作者:
Matthew Gleeson
Federal Expenditures on Pre-Kindergarteners and Kindergarteners in 2008 (Ages 3 through 5)
- DOI:
- 发表时间:
2010-04 - 期刊:
- 影响因子:0
- 作者:
Adam Kent - 通讯作者:
Adam Kent
Adam Kent的其他文献
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{{ truncateString('Adam Kent', 18)}}的其他基金
Cascade21: A workshop to catalyze and synthesize understanding of the role of magmatism in an archetype continental arc
Cascade21:催化和综合理解岩浆作用在原型大陆弧中的作用的研讨会
- 批准号:
2025606 - 财政年份:2020
- 资助金额:
$ 36.01万 - 项目类别:
Standard Grant
Collaborative Research: Synthesizing arc-scale geochemical, petrologic, and geophysical datasets to investigate causes of volcanic diversity in the Cascade Arc
合作研究:综合弧级地球化学、岩石学和地球物理数据集,研究喀斯喀特弧火山多样性的原因
- 批准号:
1948862 - 财政年份:2020
- 资助金额:
$ 36.01万 - 项目类别:
Continuing Grant
GEOPRISMS Postdoctoral Scholar proposal: Unravelling monogenetic volcanism in the Cascades Volcanic Range
GEOPRISMS 博士后学者提案:解开喀斯喀特火山山脉的单生火山作用
- 批准号:
1850779 - 财政年份:2019
- 资助金额:
$ 36.01万 - 项目类别:
Standard Grant
Collaborative Research: The Tumalo Volcanic Center - Probing the Origin of Explosive Pleistocene Silicic Volcanism in Central Oregon
合作研究:图马洛火山中心 - 探索俄勒冈州中部更新世硅质火山爆发的起源
- 批准号:
1763639 - 财政年份:2018
- 资助金额:
$ 36.01万 - 项目类别:
Standard Grant
Collaborative research: Assessing changes in the state of a magma storage system over caldera-forming eruption cycles, a case study at Taupo Volcanic Zone, New Zealand
合作研究:评估火山口形成喷发周期中岩浆储存系统状态的变化,新西兰陶波火山区的案例研究
- 批准号:
1654275 - 财政年份:2017
- 资助金额:
$ 36.01万 - 项目类别:
Continuing Grant
Harrats Volcanic Activity and Evolution of the Lithosphere-Asthenosphere Boundary beneath Western Saudi Arabia
哈拉茨火山活动和沙特阿拉伯西部岩石圈-软流圈边界的演化
- 批准号:
1524675 - 财政年份:2015
- 资助金额:
$ 36.01万 - 项目类别:
Standard Grant
Collaborative Research: Quantifying the Thermal History of Crustal Magma Storage Through Crystal Records and Numerical Modeling
合作研究:通过晶体记录和数值模拟量化地壳岩浆储存的热历史
- 批准号:
1425491 - 财政年份:2014
- 资助金额:
$ 36.01万 - 项目类别:
Standard Grant
Collaborative Research: Tectonic Links, Magma Fluxes, and Single Mineral Geochemistry in Plutonic Systems From 5-30 km Depth, Cascades Core, Washington
合作研究:5-30 公里深度的深成系统中的构造联系、岩浆通量和单一矿物地球化学,Cascades Core,华盛顿
- 批准号:
0948616 - 财政年份:2010
- 资助金额:
$ 36.01万 - 项目类别:
Continuing Grant
Acquisition of Acquisition of laser ablation and quadrupole ICP-MS instrumentation for study of high-resolution records in Earth materials at Oregon State University
俄勒冈州立大学采购激光烧蚀和四极 ICP-MS 仪器,用于地球材料高分辨率记录的研究
- 批准号:
1028762 - 财政年份:2010
- 资助金额:
$ 36.01万 - 项目类别:
Continuing Grant
Collaborative Research: Timescales of Crystal Residence and Magma Mixing at Mount Hood, Oregon
合作研究:俄勒冈州胡德山水晶住宅和岩浆混合的时间尺度
- 批准号:
0838421 - 财政年份:2009
- 资助金额:
$ 36.01万 - 项目类别:
Continuing Grant
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