J. Zhangzhou

J. Zhangzhou
Zhejiang University | ZJU · Department of Earth Science

PhD
Machine learning application in thermodynamics and kinetics, to promote understanding of geochemistry

About

17
Publications
6,203
Reads
How we measure 'reads'
A 'read' is counted each time someone views a publication summary (such as the title, abstract, and list of authors), clicks on a figure, or views or downloads the full-text. Learn more
246
Citations
Citations since 2017
10 Research Items
206 Citations
2017201820192020202120222023010203040
2017201820192020202120222023010203040
2017201820192020202120222023010203040
2017201820192020202120222023010203040
Introduction
I am a petrologist using machine learning and experimental tools to explore the habitability of the Earth. Webpage: https://person.zju.edu.cn/en/zhangzhou
Additional affiliations
October 2016 - June 2019
Scripps Institution of Oceanography, UCSD
Position
  • PostDoc Position
Education
August 2011 - September 2016
University of Minnesota Twin Cities
Field of study
  • Department of Earth Sciences
September 2008 - July 2011
Chinese Academy of Sciences
Field of study
  • Geochemistry
September 2003 - July 2007

Publications

Publications (17)
Article
Full-text available
Seismic tomography models reveal two large low shear velocity provinces (LLSVPs) that identify large-scale variations in temperature and composition in the deep mantle. Other characteristics include elevated density, elevated bulk sound speed, and sharp boundaries. We show that properties of LLSVPs can be explained by the presence of small quantiti...
Article
Full-text available
Plain Language Summary The H2O content of clinopyroxene (cpx) phenocrysts in basaltic magma has become an important way to evaluate the H2O content of Earth's mantle. However, it remains controversial whether samples collected in the field can truly reflect mantle water contents, particularly given the propensity for hydrogen to diffuse out of the...
Article
Full-text available
Clinopyroxene ferric iron content is an important consideration for garnet-clinopyroxene geother-mometry and estimations of water storage in the Earth's interior but remains difficult and expensive to measure. Here, we develop seven classic algorithms and machine learning methods to estimate Fe 3+ /ΣFe in clinopyroxene using major element data from...
Article
The storage of carbon in Earth’s mantle is an important consideration within the framework of the deep carbon cycle. In the deep (>250 km depth) reduced mantle, carbon storage mechanisms differ greatly from those in the oxidized shallow mantle. To investigate the stability of carbon-bearing phases in Earth’s deep mantle, we experimentally constrain...
Article
Full-text available
Li-rich micas are crucial in the exploration for and exploitation of Li resources. The determination of Li in mica using classical bulk chemical methods or in situ microanalytical techniques is expensive and time-consuming and has stringent requirements for the quality of micas and reference materials. Although simple linear and nonlinear empirical...
Article
Full-text available
Clinopyroxene major and trace element compositions document their physicochemical evolution and have been widely used to detect mantle metasomatism. Classical methods typically rely on one or several elemental ratios such as Ca/Al, Mg/Fe, La/Yb, and Ti/Eu to determine whether rocks or minerals have been metasomatized. These methods have proven usef...
Article
Full-text available
We report an experimental investigation of the electrical properties of natural polycrystalline lawsonite from Reed Station, CA. Lawsonite represents a particularly efficient water reservoir in subduction contexts, as it can carry about 12 wt % water and is stable over a wide pressure range. Experiments were performed from 300 to about 1325 °C and...
Article
To investigate the effect of metal/sulfide and Ni/Fe ratio on the C storage capacity of sulfide melts, we determine carbon solubility in Fe-Ni-S melts with various (Fe + Ni)/S and Ni/Fe via graphite-saturated high-pressure experiments from 2–7 GPa and 1200–1600 °C. Consistent with previous results, C solubility is high (4–6 wt.%) in metal-rich sulf...
Article
Full-text available
The behavior of nickel in the Earth’s mantle is controlled by sulfide melt–olivine reaction. Prior to this study, experiments were carried out at low pressures with narrow range of Ni/Fe in sulfide melt. As the mantle becomes more reduced with depth, experiments at comparable conditions provide an assessment of the effect of pressure at low-oxygen...
Article
Full-text available
We report electrical conductivity measurements on metal-olivine systems at about 5 and 6 GPa and up to 1,675°C in order to investigate the electrical properties of core-mantle boundary (CMB) systems. Electrical experiments were conducted in the multianvil apparatus using the impedance spectroscopy technique. The samples are composed of one metal la...
Article
Full-text available
We present high-pressure experiments up to 8 GPa that constrain the solidus and liquidus of a composition, Fe0.69Ni0.23Cu0.01S1.00, typical of upper mantle sulfide. Solidus and liquidus brackets of this monosulfide are parameterized according to a relation similar to the Simon-Glatzel equation, yielding, respectively, T (°C) = 1015.1 [P(GPa)/1.88 +...
Article
Full-text available
We present high-pressure experiments from 0.8 to 7.95 GPa to determine the effect of carbon on the solidus of mantle monosulfide. The graphite-saturated solidus of monosulfide (Fe0.69Ni0.23Cu0.01S1.00) is described by a Simon and Glatzel (Z Anorg Allg Chem 178:309–316, 1929) equation T (°C) = 969.0[P (GPa)/5.92 + 1]0.39 (1 ≤ P ≤ 8) and is ~80 ± 25...
Article
Full-text available
Mineral electron microprobe, bulk rock major, trace elements and Nd isotopes, and zircon U-Pb and Hf isotopic data are reported for granites and dioritic enclaves from the Guangtoushan granitic complex in the northern margin of the North China Craton. The zircon U-Pb dating identifies two stages of magmatism. The early stage enclave and host granit...
Article
Full-text available
CO2地质封存是控制全球CO2净排放量的有效手段。自然界存在大量基性、超基性岩石的碳酸盐风化作用,与CO2反应生成稳定的碳酸盐矿物。影响基性、超基性岩石与CO2反应速率的因素有温度,压力,pH值,流体流动速率,以及与矿物接触的表面积等。矿物在反应过程中放热可以使碳酸盐化体系进入自我加热的良性循环,同时控制流体的流动速率可以保持最佳温度使反应速率最大化。蛇绿岩中的橄榄岩,大陆玄武岩和深海玄武岩在地球表层广泛分布,可贮存大量CO2。目前研究表明技术上可行,经济成本上有优势。因此,基性、超基性岩石具有封存CO2的巨大潜力,可以做为地质封存CO2的新途径。
Article
Full-text available
深部碳循环是全球碳循环研究中不可或缺的部分.较之表层碳,人类对地球深部碳储库的储量、碳的迁移方式和交换量都缺乏清晰认识.作为来自地球深部的碳单质矿物,金刚石是研究深部碳循环的绝佳样品.近年来原位微区分析技术的突飞猛进为研究金刚石及深部碳循环提供了良好条件.文中对表层与深部碳交换、深部碳储库及金刚石矿物学性质进行了介绍,并通过金刚石及其包裹体的稳定同位素组成,探讨了金刚石的形成机制及含碳流体/熔体的性质与来源问题.

Network

Cited By

Projects

Projects (2)
Project
Machine learning application in thermodynamics and kinetics, to promote understanding on geochemistry
Project
I am a petrologist combining data mining, high pressure experiments and geochemical analysis to explore the habitability of the Earth. My recent work mainly focus on the deep carbon cycle, including: (1) Oxidized mantle carbon: carbonate (PhD student: Ben Qin) (2) Reduced mantle carbon: diamond (PhD student: Jiali Lei)