Collaborative Research: Constraining the Volatile and Slab Flux in the Izu-Bonin-Mariana MARGIN using Geothermal Fluids, Phenocrysts and Melt Inclusions

合作研究：利用地热流体、斑晶和熔融包裹体限制伊豆-博南-马里亚纳边缘的挥发物和板通量

• 批准号: 0305248
• 负责人: David Hilton
• 金额: --
• 依托单位: University of California-San Diego Scripps Inst of Oceanography
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-06-15 至 2008-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0305248&HistoricalAwards=false
• 关键词: Collaborative; Research; Constraining; Volatile; Slab

Under this award, the PIs will carry out an integrated study of volatiles in the Izu-Bonin-Marianas margin that includes the analyses of specific volatiles (H2O, CO2, Cl, S) and fluid soluble elements (Li, B, K, Rb, Ba and others) as well as their stable isotope (?d?D, d?11B, d?13C, d?18O, d?34S) systematics utilizing SIMS measurements of melt inclusions of recently erupted tephra. This data set will be complemented by CO2 and He abundance and isotopic measurements (??d13C and 3He/4He) in erupted phenocysts and discharging volcanic and hydrothermal fluids. Additionally, the study will measure the complete gas composition and the N-isotopes of the hydrothermal fluids in order to determine the present-day total volatile flux from the entire arc through normalization to ground-based SO2 remote sensing measurements. The combined data set will allow the PIs to quantify the slab flux in terms of volatile composition (melt inclusion data), the source of the slab flux in terms of oceanic basement, subducted carbonates or organic sediments (CO2-He and N2-He systematics), the present day volatile flux to the atmosphere from the slab and mantle wedge (SO2 flux and volcanic gas compositions). The study addresses the flux and composition of volatiles into and out of the IBM system and the distribution of volatiles in the mantle and its geochemical evolution through time.

根据该奖项，PI将对IZU-BONIN-MIARIANAS边缘的挥发物进行综合研究，其中包括对特定挥发物（H2O，CO2，CL，S）和流体可溶性元素（LI，B，K，K，RB，RB，BA）的分析（H2O，CO2，CL，S）以及稳定的ISOTOPE（LI，B，K，K，RB，BA）以及稳定的ISOTOPE（？利用SIMS测量最近爆发的Tephra的熔体夹杂物。该数据集将与二氧化碳相辅相成，并且在爆发的表剂以及排放火山液和水热液中，他的丰度和同位素测量（?? D13C和3HE/4HE）。此外，该研究将测量直热流体的完整气体成分和N-异构体，以确定当今的总挥发性通量从整个弧到归一化到地面SO2 SO2 SO2遥感测量值。组合的数据集将使PIS可以根据挥发性组成（熔体包含数据）来量化平板通量，这是板滤光片的来源，从海洋地下室，俯冲的碳酸盐或有机沉积物（CO2-HE和N2-HE和N2-HE Systemsics）方面，今天的挥发性液化液（CO2-HE和N2-HE Systemsics），来自Slab和mertle swux的大气层和Mertle swux and Merte and 2 and 2 and 2。该研究介绍了挥发物进入IBM系统的通量和组成以及地幔中挥发物的分布及其随着时间的推移的地球化学进化。