“相平衡,混合岩,熔融和壳内分异”短期课程一号通知
日期:2013年07月21日 10:07:31
发布人:管理员 发表时间:2013-7-2 8:31:33

2013年9月25日-10月3日  武汉

一、会议简介

    地球是一个自组织系统,不可逆地不断向空间释放能量。星球的演化分异、地幔对流和板块构造是这个循环演化过程的显著特征。自Hadean起,陆壳的生长就是一个连续过程,但从30亿年起,新生陆壳速率急速下降,可能与俯冲导向的板块构造过程有关,陆壳重组比例的系统变化似乎与超级大陆旋回有关。本课程主要关注的就是地壳重组的问题。

    地球物理勘测证实了地质学家们的地质填图结果,即花岗岩主要集中在陆壳上层,而折返高级变质岩和源自火山岩通道的捕掳体的岩石学和地球化学研究证实大部分花岗岩的主要来源为表壳岩残留,如陆壳下部的正片麻岩,角闪岩和麻粒岩。因此,陆壳在碰撞造山期间的重组将陆壳下部的熔体抽离,并使其就位于陆壳上部,这是大陆分异使残留下地壳更基性、低含水量,上地壳变成更长英质、更高含水量和不相容元素富集的主要过程。

    上地壳克拉通的形成要求熔体的汇聚和分离源自下地壳内部的固体残留体,然后集中形成高渗透力分离管道以充填入克拉通根部。物质运移包括多级不同长度和时间尺度的物理化学过程。正是这种过程赋予中上地壳丰富的矿产,对于矿产资源勘查与经济增长具有重要意义。

    本短期课程将面向广大研究生解释混合岩的成因分类,综述地壳熔融的过程,熔融类型和潜在的来源物质,检验进变质和退变质反应和机制,衡量熔融和熔体抽离的地球化学效应。我们还将评估熔体在壳内的分离,抽离和上升机制和熔体就位岩体的过程。在实习课部分,我们将观察发生熔融地壳岩薄片中的熔融和熔体分离的显微构造证据;在野外实习部分,我们将检验大别造山带根部出露部分保留的熔融、熔体分离和抽离的野外证据。野外课程是一个活跃互动的过程,学生将分为小组进行观察并在露头展开讨论。这两项内容对于学生在野外如何解释发生部分熔融岩石的潜在模糊和复杂的野外接触关系至关重要。

 

二、主办单位和承办、协办单位

主办单位:

中国地质大学(武汉)

承办单位:

中国地质大学(武汉)地质过程与矿产资源国家重点实验室

中国地质大学(武汉)教育部长江三峡库区地质灾害研究中心

中国地质大学(武汉)地球科学学院

协办单位:

中国地质大学(武汉)科技处

中国地质大学(武汉)国际合作处

 

三、课程日程安排:

701     发布一号通知

95      网上注册截止日期

910     发布二号通知

924     现场注册

925-26  北京大学魏春景教授短期课程培训-岩石学视剖面简介及其使用

927-30  四位外国教授的短期课程

101-3   大别山地区野外考察

 

四、课程提纲

中文授课部分

925-26日:北京大学魏春景教授中文介绍视剖面和相图计算原理及方法。

 

英文授课部分:

927日:半天课程介绍岩石相图理论,半天实验课集中阅读、理解相图。

928日:概述正片麻岩和高级变质作用,P-T-t轨迹和大地构造,热源。形成混合岩的过程, 包括相关术语,形态,填图和采样。部分熔融过程,包括熔融反应,熔融产物和高级变质岩相变岩石学。地壳熔融,P-T-t轨迹和熔体化学,和熔融过程中的副矿物相。区分混合岩中的碎屑、变质和深熔告示。每个讲座之后设有提问时间,每天课程结束后留有自由讨论时间。

929日:锆石与变质级别之间的关系,包括超高温变质作用和地壳熔融。使用矿物平衡模式理解混合岩进变质和退变质结构的发育过程,及其熔体丢失的效应。理解混合岩显微构造(熔融,固化和亚固相显微构造),并涵盖时间尺度的重要性。熔体分离。从混合岩到花岗岩-熔体流动穿越地壳,分离、上升和就位的整个过程。每个讲座之后设有提问时间,每天课程结束后留有自由讨论时间。

930日:实验课,高级变质岩相变组合和部分熔融岩石的显微构造(熔体充填空隙后的假象,浅色体发育,韧性破裂,混合岩显微构造,重结晶造成的显微构造特征改变)。

101-3日:大别山野外课程。

 

五、主讲人:

魏春景,北京大学教授

Michael Brown,美国马里兰大学教授

Edward Sawyer,加拿大魁北克大学希库蒂米分校

Richard White,德国美因兹大学

Simon Wilde,澳大利亚珀斯哥廷大学

 

六、重要事宜

   欢迎全国各高校和科研院所的科研人员和研究生参与此次短期课程。注册方式为填写表格附件1,通过电子邮件发送到邮箱:cugseminar@163.com, 注册截止日期:2013年9月5日。本次短期课程室内部分全部免费,旅费和食宿自理;野外考察费用需缴纳注册费,具体安排见2号通知。

 

七、秘书组、联系人及联系方式

秘书组: 王璐    邓浩    王淞杰   丁悦

1、通讯地址:湖北省武汉市鲁磨路388号中国地质大学(武汉) 地质过程与矿产资源国家重点实验室

   邮编:430074

2、会议专用邮箱:cugseminar@163.com

3、联系方式:

e-mail地址

电话

王璐

wanglu2005@gmail.com

18971193667

邓浩

 denghao815@gmail.com

15827321549

王淞杰

cugsongjie@gmail.com

13387620897

丁悦

362531595@qq.com

13387621002

 

住宿参考:

会议附近的住宿地点有:

A. 中国地质大学(武汉)迎宾楼:a:标准间268元/天(双床);  b:传统大床房268元/天(单床);

   电话:027-87515546

   地址:武汉市洪山区鲁磨路388号(地大东区校园内)

B. 梦天湖大酒店(准三星):普通标准间180元/天(双床);

电话:027-87513356

地址:武汉市洪山区东湖鲁磨路桥梁村(公交植物园小李村站以北约150m)

C. 七天连锁酒店鲁巷广场店:a:标准间180元/天(双床);  b:传统大床房 200元/天(单床);

电话:027-59836777

地址:武汉市洪山区鲁磨路243号(国光大厦A座,公交鲁磨路曹家湾站)D. 湖滨花园酒店(四星):a: 普通标准间450元/天(双床);  b:普通大床 

房380元/天(单床);c:豪华大床房 550元/天;

电话:027-87782888

地址:武汉市洪山区珞瑜路115号

注:各位代表也可根据需要自行选择其他宾馆预定,如需我们帮忙预定请在回执说明(预定仅限地大迎宾楼)。

附一:“相平衡,混合岩,熔融和壳内分异”短期课程回执

姓名

 

性别

 

职业

 

身份证号

 

是否参加野外

 

工作单位

 

通信地址及邮编

 

电话号码

 

E-mail

 

是否帮忙预订

 

是否共享房间

 

 

附二:主讲人简介

 

Michael Brown毕业于英国Keele大学获得学士及博士学位。在1972-1990年期间任教于英国Oxford Brookes 以及 Kingston大学,随后在美国Maryland大学任地质系教授。Michael Brown从事高温变质岩以及地壳熔融领域的研究工作超过40年,一直是该领域的权威专家。他的研究推进对地壳内部热量和质量如何运移的理解,并使地质学界认识到熔融作用在造山带构造运动中的重要性。近年来他的研究逐渐拓展到超高温及超高压变质岩领域,并致力于研究双变质带的成因及演化。目前,Michael Brown的主要研究兴趣在于太古代地壳的起源及发展,关注太古代某个特定时间地壳构造体制的演化以及各板块之间的俯冲及构造运动。目前他还担任《Journal of Metamorphic Geology》期刊编辑。

 

Edward W. Sawyer毕业于英国Southampton大学并获得学士学位。曾在纳米比亚从事过六年的地质调查工作,并在南非Cape Town大学获得硕士学位。之后,移居加拿大并获得Toronto大学的博士学位,继而在挪威地质调查中心从事博士后的研究工作。1986年,Edward W. Sawyer回到加拿大并在Québec à Chicoutimi担任教授。他主要致力于混合岩以及陆壳深源熔融方面的研究。他还是《Atlas of Migmatite混合岩图集》一书的作者。

 

Richard W. White德国Mainz大学变质岩石学教授。毕业于澳大利亚悉尼大学并获得学士及硕士学位,1998年获得悉尼Macquarie大学的博士学位。他用了9年的时间在澳大利亚墨尔本大学从事不同岗位的博士后研究,期间主要从事矿物平衡模型的研究,尤其关注其中部分熔融的现象。随后他来到德国,主要致力于高温变质过程的研究,研究矿物及熔体的活性成分模型并将之运用到实例当中。他目前是《Journal of Metamorphic Geology》杂志的编辑,并同时维护目前地学界广泛使用的热力学计算软件Thermocalc网站。(http://www.metamorph.geo.uni-mainz.de/thermocalc/)。

 

Simon A. Wilde澳大利亚珀斯市Curtin大学的前寒武地质学教授。毕业于英国Exeter大学并获得学士及博士学位。在1981年任教于Curtin大学之前曾在西澳大利亚地质调查中心工作9年。他主要致力于地壳演化方面的研究,并在研究工作中广泛运用野外地质调查、岩石学、地球化学、地质年代学等多种地质学方法。他的研究区域十分广泛,在巴西、中国、埃及、泰国和西澳大利亚都进行过相关的研究,其中最重要的研究主题即地壳增生的不同过程。

 

 

Short Course for China University of Geosciences, Wuhan

First notification of “Phase equilibria, Migmatites, Melting and Intracrustal Differentiation”

 

Sep 25-th to Oct 3-rd 2013 Wuhan

 

1. Introduction:

Earth is a self-organized system with an irreversible evolution dissipating energy to space. Differentiation of the planet, mantle convection and plate tectonics are emergent features of this secular evolution. Since the Hadean, growth of continental crust appears to have been a continuous process, but with a marked decrease in the rate of production of new crust at 3 Ga, which appears to have been linked to the onset of subduction-driven plate tectonics, and systematic changes in the proportion of crustal reworking, which appears to be related to the supercontinent cycle. This short course concerns crustal reworking.

Geophysical surveys confirm the view from geological mapping that granites are concentrated in the upper portion of the continental crust, whereas petrological and geochemical studies of exhumed high-grade metamorphic rocks and xenoliths retrieved from volcanic conduits demonstrate that the principal source for many of these granites was residual supracrustal rocks, orthogneisses, amphibolites and granulites in the lower portion of the continental crust. Thus, reworking of the continental crust during collisional orogenesis by extraction of melt from the lower portion and its emplacement in the upper portion is the principal process by which continents have become differentiated into a more mafic, minimally hydrated and residual lower crust and a more felsic, more hydrated and incompatible element-enriched upper crust.

The formation of upper crustal plutons requires that melt be generated and separated from solid residue within lower crustal sources and then become focused into high permeability extraction conduits to feed the roots of the plutons. This mass transfer involves a multitude of physical and chemical processes that operate at several different length and time scales. It is this process that has endowed the middle-to-upper crust with the mineral deposits so critical for economic growth today.

In this short course we will explain the genetic classification of migmatites, review the process of crustal melting, consider types of melting and potential source materials, examine prograde and retrograde reactions and mechanisms, and evaluate some of the geochemical consequences of melting and melt extraction. We will also assess mechanisms of melt segregation, extraction and ascent through the crust and the process of melt emplacement in plutons. In the laboratory class, we will look at microstructural evidence for melting and melt segregation in thin sections of partially melted crustal rocks. Finally, on the field trip we will examine the evidence for melting and melt segregation and extraction as preserved in the deeply exposed root of an orogenic belt in the Dabie Shan. This field activity will be interactive, with the students expected to work in small groups and then to take the lead in discussions on the outcrops. These last two elements are critical to developing an understanding of how to interpret potentially ambiguous relationships in partially melted rocks and the apparent complexity of these rocks at outcrop.

 

2. Course schedule:

1-st July                 First notification on the internet

5-th September                 Online registration deadline

10-th September          Second notification on the internet

24-th September          On-site registration

25-26-th September             Short course introducing petrological phase diagrams and their application by Prof. Wei Chunjing from Peking University

27-30-th September         Short course from Prof. Brown, Sawyer, White and Wilde

1-3-rd October           Field course on partial melting and migmatites in Dabie Mountain area

 

3. Course outline:

CHINESE PART

25-26-th September: Short course for introducing petrological phase diagrams and their application by Prof. Wei Chunjing from Peking University

 

ENGLISH PART:

27-th September: Introduction to phase petrology, comprising a half-day of lectures and a half-day lab class focused on reading/understanding phase diagrams.

28-th September: General introduction to orogenesis and high-grade metamorphism, P–T–t paths and tectonics, and sources of heat. Process based approach to migmatites, including terminology and morphology, mapping and sampling. The partial melting process, including melting reactions, melt productivity and phase petrology of high-grade metamorphic rocks. Crustal melting, P–T–t paths and melt chemistry, including accessory phases during melting. Distinguishing detrital, metamorphic and anatectic zircon in migmatites. There will be a question period after each presentation and an open discussion period at the end of the day.

29-th September: Zircon in relation to metamorphic grade, including UHT metamorphism and crustal melting. Using mineral equilibria modeling to understand the development of prograde and retrograde textures in migmatites, and the effects of melt loss. Decoding migmatite microstructures (melting, solidification and subsolidus microstructures), including the importance of timescale. Melt segregation. From migmatite to granite – organizing melt flow through the crust, including the view from the top down, the view from the bottom up, melt segregation, ascent and emplacement. There will be a question period after each presentation and an open discussion period at the end of the day.

30-th September: Laboratory class in phase assemblages in high-grade metamorphic rocks and microstructures in partially melted rocks (pseudomorphs after melt-filled pores, development of leucosomes, ductile fracture, microstructures in diatexite migmatites, modification of microstructures by recrystallization).

1-3-rd October:  Field trip to the Dabie Shan.

 

4. Lecturers

Chunjing Wei, Peking University

Michael Brown, University of Maryland, USA

Edward Sawyer, Université du Québec à Chicoutimi

Richard White, University of Mainz, Germany

Simon Wilde, Curtin University, Australia

 

5. Important affairs:

Registration way: Full out table 1 attached below and send it to email box: cugseminar@163.com;

Person to Contact:

Name

Email adress

Cellphone

Wang Lu

wanglu2005@gmail.com

18971193667

Deng Hao

 denghao815@gmail.com

15827321549

Wang Songjie

cugsongjie@gmail.com

13387620897

Ding Yue

362531595@qq.com

13387621002

 

Registration deadline: 5th, September, 2013;

Registration fee: All lectures within CUG Wuhan are free; however accommodation, food and personal expenses are covered by participants. Registration fee for field investigation should be paid by participants as well. Detailed arrangement will be seen in the second notification.

Accommodation: Organizers will only help order the hotel room from CUG hotel (30 rooms reserved). If you want to order the room from CUG hotel, please make a clear note in the table 1.

 

Table 1Return receipt of short course “Phase equilibria, Migmatites, Melting and Intracrustal Differentiation”

Name

 

Gender

 

Occupation

 

ID number

 

Affiliation

 

Address and Zip

 

Telephone number

 

E-mail

 

Whether or not to participate in the filed investigation

 

Whether or not book the room

 

Whether or not share the room

 

 

6. Lecturers

Michael Brown received his BA and PhD from the University of Keele in the UK. He held academic appointments at Oxford Brookes and Kingston Universities in the UK from 1972 to 1990, when he moved to the University of Maryland in the USA as Professor of Geology and Chair of Department. For more than 40 years Michael has been a leader in the realm of high-temperature metamorphic petrology and crustal melting. This work has furthered our understanding of how heat and mass are transferred within the crust, in particular identifying the importance of melt in the tectonic evolution of orogens. With time his research has broadened into ultrahigh temperature and high-pressure metamorphism, the origin of paired metamorphic belts, and secular change. Currently, his main research interests concern the origin and evolution of Archean crust, and the evolution of tectonic regimes during the Archean with particular interest in the timing of the onset of subduction and plate tectonics. He is currently an editor of the Journal of Metamorphic Geology.

 

Edward W. Sawyer received his BSc from the University of Southampton in the UK. He worked for the Geological Survey of South Africa in Namibia for six years and obtained his MSc from the University of Cape Town in South Africa. Then he moved to Canada and received a PhD from the University of Toronto, followed by postdoctoral research at the Geological Survey of Norway. He returned to Canada in 1986 to take a position at the Université du Québec à Chicoutimi, where he is now a professor. His principal research interest is in migmatites and the segregation and migration of anatectic melt in the continental crust. He is the author of the “Atlas of Migmatites.”

 

Richard W. White is a professor of metamorphic geology at the University of Mainz, Germany. He received his BSc and MSc from the University of Sydney in Australia, and his PhD from Macquarie University (Sydney) in 1998. He spent nine years at the University of Melbourne in Australia in several postdoctoral positions, undertaking mineral equilibria modeling studies, focusing on partial melting. He then moved to Germany, where his main research interests center on high-temperature metamorphic processes, the development of mineral and melt activity–composition models, and their application to natural examples. He is currently an editor of the Journal of Metamorphic Geology, and he maintains the Thermocalc resources webpage (http://www.metamorph.geo.uni-mainz.de/thermocalc/).

 

Simon A. Wilde is professor of Precambrian geology at Curtin University in Perth, Australia. He received his BSc and PhD from Exeter University in the UK. He worked at the Geological Survey of Western Australia for nine years before joining Curtin University in 1981. His main research interest is in crustal evolution, applying fieldwork, petrology, geochemistry and geochronology to the study of continental crustal evolution. All projects are international in scope, with current research being concentrated in Brazil, China, Egypt, Thailand, Vietnam and Western Australia. An overarching theme to this research is the desire to understand the range of processes that contribute to crustal growth.

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