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第五届亚洲流体包裹体会议(ACROFI)将于2014年5月在我校召开
2013-12-30 13:59  

由我校与南京大学等联合承办的第五届亚太流体包裹体国际会议ACROFI V将于2014年5月16日-18日在我校召开,其中2014年5月16日的会议开幕式和大会主题报告将在我校学术交流中心举行,5月17日-18日的参会代表报告将在地质科技大厦分组进行。目前注册的外国参会人员40多人,国内参会人员近190人。会议特邀了五位国际著名的流体包裹体研究专家,将于会前5月10~14日在南京大学内生矿床国家重点实验室举办流体包裹体讲座,内容涉及地球流体循环、流体包裹体热力学与相平衡和流体包裹体研究与应用方法等,重点是岩浆熔融包裹体和深部岩浆作用。

具体内容见http://es.nju.edu.cn/ACROFI_V/Home.htm.

迎我院老师和研究生积极参加会议。

特邀的国际著名专家:

R. J. BodnarVirginia Tech, Blacksburg, VA, U.S.A),国际著名流体包裹体地球化学与应用专家,其带领的团队在流体包裹体理论、分析方法、沉积岩、变质岩和岩浆岩流体包裹体地球化学、以及流体包裹体在油气成藏、成岩、成矿作用研究应用方面发表了大量文章,为世界公认的流体包裹体专家。

L. V. DanyushevskyTasmania University, Hobart, Australia),主要介绍岩浆熔融包裹体研究方法以及深部岩浆作用与成矿。

B. De VivoUniversity of Napoli Federico II),主要介绍流体包裹体和熔融包裹体及其在火山岩浆作用研究中的应用。

M. L. FrezzottiUniversity of Milano Bicocca),主要介绍深部流体包裹体热力学和地球化学及流体包裹体分析测试方法。

J. D. WebsterAmerican Museum Natural History, N.Y., USA),主要介绍岩浆熔融包裹体及其热力学。

时间和内容安排如下:

 

May 10th, 2014

Introduction to the course (Bodnar; 1 hour)

The geohydrologic cycle (Bodnar; 1 hour)

The whole Earth system can be divided into the following reservoirs for H2O: atmosphere, biosphere, oceans, surface water, groundwater, glaciers and polar ice, continental crust, oceanic crust, upper mantle, transition zone, lower mantle and core. The amount of H2O contained in each of these reservoirs will be discussed, as well as the fluxes of H2O between reservoirs and residence times for H2O in the different reservoirs.

Introduction to phase equilibria and thermodynamics" (All; 2 hours)

The Gibbs Phase Rule; the Clausius-Clapeyron relationship; activity, fugacity; chemical potential and equilibrium; the definition of free energy and how it can be estimated from PVT data; solubility and saturation of volatiles in melts and fluids; melting diagrams for solid solutions; equilibrium between melts and simple solid solutions, the effects of changing melt/crystal proportions on the compositional evolution of solid solutions during crystallization; the effect of volatiles on crystallization temperatures of primitive magmas as a function of pressure

Introduction to phase equilibria and thermodynamics (continued) (All; 3 hours)

May 11th, 2014

Introduction to fluid Inclusions and fluid phase equilibria (Bodnar; 4 hours)

Identification, analysis and application of fluid inclusions to geologic problems.

Introduction to micro-Raman spectroscopy (Frezzotti; 2 hours): Raman spectroscopy is a non-destructive technique for fluid inclusion analysis, with a wide field of applications ranging from qualitative detection of solid, liquid and gaseous components to identification of polyatomic ions in solution. The main advantages of this technique are the minimal sample preparation and the high versatility. The procedures to calculate the density of CO2 fluids, the chemistry of aqueous fluids, and the molar proportions of gaseous mixtures present as inclusions, will be described.

Applications of fluid inclusions in ore-forming environments (Bodnar; 1 hour)

May 12th, 2014

Fluid inclusions in UHP metamorphic rocks (Frezzotti; 1 hour): The chemistry of fluid inclusions in high ultrahigh-pressure (UHP) metamorphic suites that experienced P–T conditions similar to those occurring in deep subduction zones (> 80-100 km) provide insight regarding the geochemical effects of fluid/melt addition to mantle wedges, and to the geochemical evolution of arc lavas. Examples from the Alps (Italy) and the Dabie-Sulu (China) UHP rocks will be presented.

CO2, carbonate melts, and brines and in the Earth’s upper-mantle (Frezzotti; 1 hour): Fluid inclusions in peridotite xenoliths provide a framework for interpreting the chemistry of fluids in the upper mantle in the different geodynamic settings. In the lithospheric mantle, the dominant fluid phase is CO2 (± brines), changing through carbonate melts at rising pressures. Mantle degassing liberates fluxes of CO2 (± brines), which may eventually reach upper crustal levels, including the atmosphere. 

Introduction to melt inclusions (Danyushevsky; 3 hours)

Melt inclusions are small portions of melt trapped by crystals growing during magma evolution, and thus can represent ‘snapshot’ of the conditions that existed during crystallisation. In this lecture, trapping mechanisms of melt inclusions, their post-entrapment modifications, and experimental studies of melt inclusions will be discussed.

Applications of FI & MI on Vesuvius and Campi Flegrei volcanoes (De Vivo; 2 hours)

May 13th, 2014

Thermodynamics and physics of melt-fluid ± mineral systems (Webster; 4 hours)

Water and carbon dioxide are the primary magmatic volatile constituents, but sulfur and chlorine are also important magmatic volatiles. The phase relations of fluid exsolution from silicate melt, and the influences of these volatiles on magma evolution, fluid geochemistry, and the generation of mineralizing magmatic-hydrothermal fluids will be addressed.

Thermodynamics and physics of melt-fluid ± mineral systems, continued (Webster; 3 hours)

Volatile components in silicate melts influence melting temperatures and melt viscosity. Volatile components also influence the stability of minerals and fluids and consequently control larger processes including magma rheology and explosivity. The role of H2O and CO2 in these processes will be discussed.

May 14th, 2014

Using melt inclusions to constrain the origin of phenocrysts in strongly-phyric volcanic rocks (Danyushevsky; 1 hour)

An important implication of melt inclusions is to assess whether crystals in volcanic rocks crystallised from the same magma type as represented by the transporting melt (i.e., the groundmass of the rock), or are xenocrysts. Different examples from subduction-related volcanic suites will be shown.

Timing crystallisation processes using melt inclusions; Using melt inclusions to determine komatiite melt compositions; Melt inclusion studies on Vesuvius (Danyushevsky; 2 hours)

Post-entrapment re-equilibration of melt inclusions with their hosts can be used to assess crystallisation rates of individual phenocrysts. Melt inclusions can be a powerful tool for recovering melt compositions in ancient volcanic suites, when the groundmass in the lavas is chemically modified by alteration. A summary of melt inclusion studies of Vesuvius will be presented.

Melt inclusions in intermediate to felsic magmas (Webster; 2 hours)

The use and misuse of geochemical data from silicate melt inclusions of felsic continental and subduction-zone magmas will be described. Interpreting magma behaviour with melt inclusion compositions and experimentally determined volatile solubilities.

Exam on material covered in the short course (2 hours)

长安大学资源学院

2014年5月4日

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