Global S&T Development Trend Analysis Platform of Resources and Environment
项目编号 | 1830937 |
Collaborative Research: How are Rhyolites Generated? Evaluating Models for the Volcanic-plutonic Connection in the Searchlight Magmatic System, Nevada | |
Blair Schoene | |
主持机构 | Princeton University |
项目开始年 | 2018 |
2018-09-01 | |
项目结束日期 | 2020-08-31 |
资助机构 | US-NSF |
项目类别 | Standard Grant |
项目经费 | 328736(USD) |
国家 | 美国 |
语种 | 英语 |
英文摘要 | Eruptions of high-silica rhyolite magma are explosive, violent, and potentially extremely hazardous events. However, questions of how, under what conditions, and over what timescales the magma bodies that source these eruptions are assembled remain debated. Resolving these issues is critical for understanding a variety of magmatic and crustal processes, ranging from the geochemical stratification of the crust to monitoring the volcanoes that source such dangerous eruptions for future hazards. A significant challenge to answering these questions lies in the difficulty in documenting the physical (e.g., temperature, pressure) and geochemical conditions in magmatic systems through time. Geophysical measurements on modern volcanoes can provide 'snapshots' of a magmatic system, but they cannot shed light on long-term changes that occur over tens of thousands to millions of years. One way to bridge this gap is to study ancient volcanoes where faulting and erosion have exposed both the material that erupted from the volcano and the un-erupted material that comprises the roots of these systems within the Earth's crust. Used in combination, these extrusive and intrusive deposits can be a powerful tool to understand longer-term processes. This project aims to investigate one such ancient volcano near Searchlight, Nevada (USA). More specifically, the PIs will produce a high-resolution (<50,000 years) temporal record spanning the magmatic system's 1-2 million year lifetime, with which they will establish the history of magma emplacement in the crust, geochemical trends, and the relative timing of the eruption(s). To do this, the researchers will utilize high-precision U-Pb zircon geochronology, whole-rock and mineral geochemistry and barometry, and thermal models. This record will shed light on the timescales over which magmas accumulate and are stored within the Earth's upper crust, the processes that occur in and affect the magma body prior to eruption, and potential eruption triggers. Funding will also support two postdoctoral researchers (1 female), research opportunities for undergraduate students at Princeton and Northeastern Universities, and participation in Princeton University's Teachers as Scholars program, which introduces local K-12 teachers to the Earth sciences and helps them in building science curricula for use in their classrooms. This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria. |
文献类型 | 项目 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/73307 |
专题 | 环境与发展全球科技态势 |
推荐引用方式 GB/T 7714 | Blair Schoene.Collaborative Research: How are Rhyolites Generated? Evaluating Models for the Volcanic-plutonic Connection in the Searchlight Magmatic System, Nevada.2018. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
查看访问统计 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Blair Schoene]的文章 |
百度学术 |
百度学术中相似的文章 |
[Blair Schoene]的文章 |
必应学术 |
必应学术中相似的文章 |
[Blair Schoene]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论