| 项目编号: | 1349811
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| 项目名称: | Noble Gases, Lower Mantle Structures, and the Origin of Ocean Island Basalts |
| 作者: | Curtis Williams
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| 承担单位: | Williams Curtis D
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| 批准年: | 2013
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| 开始日期: | 2014-09-01
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| 结束日期: | 2016-08-31
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| 资助金额: | USD174000
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| 资助来源: | US-NSF
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| 项目类别: | Fellowship
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Earth Sciences
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| 英文关键词: | mantle
; noble gas
; noble gas systematic
; mantle convection
; mantle plume
; ocean island basalt
; enriched mantle component
; oib
; chemical structure
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| 英文摘要: | Dr. Curtis Williams has been awarded an NSF EAR Postdoctoral fellowship to carry out a research and broadening participation plan at the University of California - Davis. The investigator will determine noble gas systematics and develop models of mantle convection to better constrain the formation, location, and preservation of the source region for mantle plumes. Ocean island basalts (OIBs) represent the surface manifestation of plumes that originate in the lower mantle; as such, OIBs provide valuable information regarding chemical structure and dynamics of Earth's lower mantle. The study of noble gases in OIBs is crucial to the understanding of the chemical composition and structure of Earth's lower mantle, the understanding of Earth's accretion, its subsequent differentiation and degassing, and the formation of the atmosphere. Dr. Williams will contribute to the training of the next generation of Earth scientists by being a role model and engaging students from under-represented groups.
This investigation will use noble gas systematics of OIBs to: [1] constrain the source region of the primitive noble gases in the lower mantle; [2] document the heavy noble gas signature of enriched mantle components and understand the genetic relationship between the different components as determined from the noble gases; [3] use dynamic models of mantle convection to understand the preservation of chemical heterogeneities and whether the degree of entrainment of a dense basal layer in the lower mantle is consistent with geochemical observations in mantle plumes. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/95861
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Curtis Williams. Noble Gases, Lower Mantle Structures, and the Origin of Ocean Island Basalts. 2013-01-01.
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