Significant improvements in the development and application of olivine-melt thermometry and hygrometry: new experiments and analytical approaches
橄榄石熔体测温法和测湿法的开发和应用的重大改进:新实验和分析方法
基本信息
- 批准号:2125941
- 负责人:
- 金额:$ 41.47万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2021
- 资助国家:美国
- 起止时间:2021-08-01 至 2024-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
This award is funded in part under the American Rescue Plan Act of 2021 (Public Law 117-2).Basaltic volcanism throughout Earth history has profoundly shaped the evolution of Earth’s crust and atmosphere, as well as the evolutionary path of life itself. In this study, erupted basalts are used as windows into the underlying mantle from which they were formed. The goal is to develop a new thermometer/hygrometer that enables both the temperature and water content of basalts to be readily and accurately obtained. Its ease of use will help generate large data sets, which will allow questions to be addressed about global differences in basalts erupted from diverse tectonic settings and throughout Earth history. The new thermometer/hygrometer will be made available to all interested users as a downloadable excel file. Two UM graduate students from diverse, under-represented backgrounds will work on this project. They will gain a broad range of skills, from expertise in conducting high-temperature and high-pressure experiments, performing thermodynamic calculations, and applying their results to better constrain mantle conditions that lead to partial melting. In addition, undergraduates from the M-STEM program at the University of Michigan (UM) will be recruited to work on this project.The goal of this project is to continue the experimental calibration a new olivine-melt thermometer that is based on the partitioning of Ni between olivine and basaltic liquids (DNiol/liq), and to further test whether it is independent of dissolved water at both crustal and mantle depths. Currently, the most widely used olivine-melt thermometers (based on DMgol/liq) are strongly dependent on water, and their application to hydrous basalts requires that melt H2O concentrations already be known, which is not always the case. With an H2O-independent thermometer in hand, based on DNiol/liq, it can be applied to olivine phenocrysts in hydrous basalts to obtain accurate temperatures, without prior knowledge of melt water contents. These temperatures can then be combined with Mg-based olivine-melt thermometers to obtain anhydrous temperatures and thus the magnitude of ∆T, the depression of the olivine liquidus due to dissolved water. Experiments will be performed to evaluate whether this depression of the olivine liquidus due to water is linearly and inversely correlated with the partitioning of Ca between olivine and melt (DCaol/liq), as indicated in preliminary work. To extend the calibration of this new olivine-melt thermometer/hygrometer, experiments will be performed on a variety of basaltic compositions over a range of water contents, temperatures, pressures (crustal and mantle) and fO2 conditions. Additionally, it is proposed to apply the new thermometer/hygrometer to a large number of natural basalts from a variety of tectonic settings. The results will shed light on the thermal/hydrous conditions in the mantle during partial melting across a variety of tectonic settings, from subduction zones to mantle plumes to continental rifts.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.
该奖项的部分资金来源于《2021 年美国救援计划法案》(公法 117-2)。整个地球历史上的玄武岩火山活动深刻地塑造了地壳和大气的演化,以及生命本身的演化路径。 在这项研究中,喷发的玄武岩被用作观察形成玄武岩的底层地幔的窗口。 目标是开发一种新型温度计/湿度计,能够轻松准确地获得玄武岩的温度和含水量。 它的易用性将有助于生成大型数据集,从而解决不同构造环境和整个地球历史中喷发的玄武岩的全球差异问题。 新的温度计/湿度计将以可下载的 Excel 文件形式提供给所有感兴趣的用户。两名来自不同背景、代表性不足的密歇根大学研究生将参与该项目。他们将获得广泛的技能,包括进行高温高压实验、进行热力学计算以及应用其结果更好地限制导致部分熔化的地幔条件的专业知识。 此外,密歇根大学(UM)M-STEM项目的本科生将被招募来从事该项目。该项目的目标是继续实验校准一种新的橄榄石熔体温度计,该温度计基于橄榄石和玄武岩液体(DNiol/liq)之间Ni的分配,并进一步测试它是否独立于地壳和地幔深处的溶解水。目前,最广泛使用的橄榄石熔体温度计(基于 DMgol/liq)强烈依赖于水,并且它们在含水玄武岩中的应用要求已知熔体 H2O 浓度,但情况并非总是如此。有了基于 DNiol/liq 的独立于 H2O 的温度计,它可以应用于含水玄武岩中的橄榄石斑晶,以获得准确的温度,而无需事先了解融水含量。 然后可以将这些温度与基于镁的橄榄石熔体温度计相结合,以获得无水温度,从而获得 ΔT 的大小,即由于溶解水而导致的橄榄石液相线的下降。 将进行实验来评估由于水导致的橄榄石液相线降低是否与橄榄石和熔体 (DCaol/liq) 之间的 Ca 分配呈线性负相关,如初步工作所示。 为了扩展这种新型橄榄石熔体温度计/湿度计的校准,将对各种玄武岩成分在一系列含水量、温度、压力(地壳和地幔)和 fO2 条件下进行实验。 此外,建议将新的温度计/湿度计应用于来自各种构造环境的大量天然玄武岩。 研究结果将揭示从俯冲带到地幔柱再到大陆裂谷的各种构造环境部分熔融过程中地幔的热/含水条件。该奖项反映了 NSF 的法定使命,并通过使用基金会的智力价值和更广泛的影响审查标准进行评估,被认为值得支持。
项目成果
期刊论文数量(1)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Origin of low Mg# hawaiites carrying peridotite xenoliths from the Cima volcanic field, California, USA: Evidence of rapid magma mixing during ascent along intersecting fractures
低镁的起源
- DOI:10.1130/b36390.1
- 发表时间:2022
- 期刊:
- 影响因子:0
- 作者:Brehm, Sarah K.;Lange, Rebecca A.
- 通讯作者:Lange, Rebecca A.
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Rebecca Lange其他文献
Image and text relations in ISIS materials and the new relations established through recontextualisation in online media
ISIS 材料中的图像和文本关系以及通过在线媒体重新语境化建立的新关系
- DOI:
10.1177/1750481318766938 - 发表时间:
2018 - 期刊:
- 影响因子:1.9
- 作者:
Peter F. Wignell;K. O’Halloran;Sabine Tan;Rebecca Lange;Kevin Chai - 通讯作者:
Kevin Chai
The Role of Language in the Development of Number Concepts: Evidence From and Towards an Understanding of Oral Deaf Cognition
- DOI:
- 发表时间:
2013 - 期刊:
- 影响因子:0
- 作者:
Rebecca Lange - 通讯作者:
Rebecca Lange
Multimodal Recontextualisations of Images in Violent Extremist Discourse
暴力极端主义话语中图像的多模态重构
- DOI:
10.4324/9781315521015-12 - 发表时间:
2017 - 期刊:
- 影响因子:0
- 作者:
K. O’Halloran;Sabine Tan;Peter F. Wignell;Rebecca Lange - 通讯作者:
Rebecca Lange
Development of portable microfading spectrometers for measurement of light sensitivity of materials
开发用于测量材料光敏感性的便携式微衰落光谱仪
- DOI:
- 发表时间:
2011 - 期刊:
- 影响因子:0
- 作者:
Haida Liang;Rebecca Lange;Andrei Lucian;Paul Hyndes;Joyce H.TOWNSEND;S. Hackney - 通讯作者:
S. Hackney
Matrix quality and habitat configuration interactively determine functional connectivity in a widespread bush cricket at a small spatial scale
基质质量和栖息地配置交互决定小空间尺度上广泛分布的灌木蟋蟀的功能连接
- DOI:
- 发表时间:
2012 - 期刊:
- 影响因子:5.2
- 作者:
Rebecca Lange;T. Diekötter;Lisa A. Schiffmann;V. Wolters;W. Durka - 通讯作者:
W. Durka
Rebecca Lange的其他文献
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{{ truncateString('Rebecca Lange', 18)}}的其他基金
The Origin of Voluminous, Hydrous, High-SiO2 Rhyolites at Long Valley, CA: High-resolution Numerical Thermal Models and Dynamic, Hydrous Experiments
加利福尼亚州长谷大量含水高 SiO2 流纹岩的起源:高分辨率数值热模型和动态含水实验
- 批准号:
1855751 - 财政年份:2019
- 资助金额:
$ 41.47万 - 项目类别:
Standard Grant
Experimental Calibration of the Olivine-melt Ni Thermometer Under Hydrous Conditions: Applications to Hygrometry, Oxybarometry and Olivine Phenocryst Growth Rates
含水条件下橄榄石熔体镍温度计的实验校准:在湿度测定、氧压测定和橄榄石斑晶生长速率中的应用
- 批准号:
1551344 - 财政年份:2016
- 资助金额:
$ 41.47万 - 项目类别:
Standard Grant
Extension of the Plagioclase-liquid Hygrometer to Rhyolites and Sr and Ba Partitioning Studies: New Phase Equilibrium Experiments on Hydrous Rhyolite
斜长石液体湿度计扩展到流纹岩和 Sr 和 Ba 分配研究:含水流纹岩的新相平衡实验
- 批准号:
1250368 - 财政年份:2013
- 资助金额:
$ 41.47万 - 项目类别:
Continuing Grant
Collaborative Research: High Pressure Experimental Melt Density
合作研究:高压实验熔体密度
- 批准号:
0855373 - 财政年份:2009
- 资助金额:
$ 41.47万 - 项目类别:
Standard Grant
The Thermodynamic Properties of MgCO3-CaCO3-FeCO3-Na2CO3-K2CO3-Li2CO3 Liquids: New Measurements
MgCO3-CaCO3-FeCO3-Na2CO3-K2CO3-Li2CO3 液体的热力学性质:新测量
- 批准号:
0711209 - 财政年份:2007
- 资助金额:
$ 41.47万 - 项目类别:
Continuing Grant
SOTA 2007 and GSA Field Forum in Chile: Support for Graduate Student and Latin American Participation
智利 SOTA 2007 和 GSA 现场论坛:支持研究生和拉丁美洲参与
- 批准号:
0628364 - 财政年份:2006
- 资助金额:
$ 41.47万 - 项目类别:
Standard Grant
Frequency Sweep Acoustic Interferometry: Measurement of Silicate Melt Compressibility and Density at High Temperature and Pressure
扫频声干涉测量:高温高压下硅酸盐熔体压缩性和密度的测量
- 批准号:
0440097 - 财政年份:2005
- 资助金额:
$ 41.47万 - 项目类别:
Continuing Grant
Development of an ultrasonic acoustic interferometer for silicate liquids in an internally heated pressure vessel
开发用于内加热压力容器中硅酸盐液体的超声波声干涉仪
- 批准号:
0447113 - 财政年份:2005
- 资助金额:
$ 41.47万 - 项目类别:
Continuing Grant
Volcanic Time Scales, Eruption Rates, and Compositional Diversity at a Continental Arc
大陆弧的火山时间尺度、喷发率和成分多样性
- 批准号:
0409052 - 财政年份:2004
- 资助金额:
$ 41.47万 - 项目类别:
Continuing Grant
The K' of Highly Compressible Silicate Liquids: An Experimental Study
高可压缩硅酸盐液体的 K:实验研究
- 批准号:
0310079 - 财政年份:2003
- 资助金额:
$ 41.47万 - 项目类别:
Standard Grant
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