Thermal and Structural History of the Pennine-Austroalpine Transition Zone, Alps (Eastern Switzerland)
阿尔卑斯山(瑞士东部)奔宁山脉-南高山过渡带的热学和结构历史
基本信息
- 批准号:1451055
- 负责人:
- 金额:$ 23.3万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Standard Grant
- 财政年份:2015
- 资助国家:美国
- 起止时间:2015-03-01 至 2017-02-28
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Large-scale structures in collisional mountain belts such as the Alps or Himalayas typically record shortening strains reflective of the collision of two continents. However, increasing evidence is emerging that some structures in these belts deform by extension (or stretching), a pattern opposite to the expectation. In some cases, the extension may be consequence of collapse of the high topography created by the collision. In this project, a research team from California Institute of Technology and Australian National University, will test if a major structure in the Alps deformed by extension. If so, the finding would shed new light on the complex processes that operate in major collisional mountain belts. The project would advance desired societal outcomes by: (1) full participation of underrepresented minorities in STEM through a high school mentoring program; (2) increased public scientific literacy and public engagement with science and technology through outreach activities; (3) development of a competitive STEM workforce through training of a graduate and an undergraduate student; and (4) increased partnerships through international collaboration.This project investigates the structural and low-temperature thermal history of the base of the Austroalpine allochthon in eastern Switzerland, representing the contact between the Adriatic microplate and various tectonostratigraphic units located along the southern margin of Europe. Published thermochronological and structural data in the region suggest that the fault may primarily be a normal fault, juxtaposing the allochthon against its structurally complex substrate, the Pennine Zone, at some point in early to mid-Tertiary time. In collaboration with the Australian National University, the research team will analyze eight transects across the southern part of the base of the allochthon in order to constrain the thermal histories of the Austroalpine and Penninic domains, and the structural transport direction(s) along and near the base. This project will constrain the cooling paths of from samples transects using (U-Th)/He and fission-track methods on apatite, zircon and where possible, titanite. The Australian National University group will constrain the cooling histories of the same samples, using white mica and potassium feldspar. This multiple-method approach across key contact zones will provide powerful new constraints on the origin and emplacement of the allochthon. A normal fault origin for the base of the allochthon (cold rocks emplaced over hot), if correct, will have first-order implications not only for the assembly of this iconic orogen, but for convergent orogens in general.
阿尔卑斯山或喜马拉雅山等碰撞山区的大型构造通常记录了反映两个大陆碰撞的缩短应变。然而,越来越多的证据表明,这些带中的一些结构通过延伸(或拉伸)而变形,这与预期相反。在某些情况下,延伸可能是碰撞造成的高地塌陷的结果。在这个项目中,来自加州理工学院和澳大利亚国立大学的一个研究小组将测试阿尔卑斯山的一个主要结构是否因延伸而变形。如果是这样的话,这一发现将为主要碰撞山脉带的复杂过程提供新的线索。该项目将通过以下方式促进预期的社会成果:(1)通过高中辅导计划,使代表性不足的少数群体充分参与STEM;(2)通过外联活动,提高公众的科学素养和公众对科学和技术的参与;(3)通过培训一名研究生和一名本科生,培养一支有竞争力的STEM劳动力队伍;(4)通过培训一名研究生和一名本科生,培养一支有竞争力的STEM队伍。(4)通过国际合作加强伙伴关系。本项目调查了瑞士东部南阿尔卑斯外来岩基底的构造和低温热历史,代表亚得里亚海微板块与沿着欧洲南部边缘的各种构造地层单位之间的接触。在该地区公布的热年代学和结构数据表明,故障可能主要是一个正常的故障,并列外来体对结构复杂的基板,奔宁区,在某个时候在第三纪早期到中期的时间。在与澳大利亚国立大学的合作中,研究小组将分析整个外来岩基底南部的8个断面,以限制Austroalpine和Penninic域的热历史,以及基底沿着和附近的结构运输方向。该项目将使用磷灰石、锆石和(如可能)钛铁矿的(U-Th)/He和裂变径迹方法,限制样品断面的冷却路径。澳大利亚国立大学的研究小组将使用白色云母和钾长石来限制相同样本的冷却历史。这种跨越关键接触带的多方法将为外来体的起源和就位提供强有力的新约束。外来体(冷岩侵位在热岩之上)基底的正断层起源,如果正确的话,将不仅对这一标志性造山带的组装,而且对一般的会聚造山带具有一级意义。
项目成果
期刊论文数量(0)
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Brian Wernicke其他文献
Introduction of a digital maturity assessment framework for construction site operations
引入建筑工地运营数字化成熟度评估框架
- DOI:
10.1080/15623599.2021.1943629 - 发表时间:
2021 - 期刊:
- 影响因子:3.9
- 作者:
Brian Wernicke;L. Stehn;A. Sezer;M. Thunberg - 通讯作者:
M. Thunberg
A new type of decollement thrusting
一种新型滑脱冲断
- DOI:
10.1038/300513a0 - 发表时间:
1982-12-09 - 期刊:
- 影响因子:48.500
- 作者:
B. Clark Burchfiel;Brian Wernicke;James H. Willemin;Garry J. Axen;C. Scott Cameron - 通讯作者:
C. Scott Cameron
Brian Wernicke的其他文献
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{{ truncateString('Brian Wernicke', 18)}}的其他基金
Temperatures and Fluids on Faults Based on Carbonate Clumped-isotope Thermometry
基于碳酸盐聚集同位素测温的断层温度和流体
- 批准号:
1250565 - 财政年份:2013
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$ 23.3万 - 项目类别:
Standard Grant
Collaborative Research: Dynamics of Crust-Mantle Coupling through Combined Analysis and Modeling of EarthScope Seismic, Geodetic, and Geologic Data
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Continuing Grant
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利用 (U-Th)/He 磷灰石热年代学和 13C-18O 碳酸盐古测温法研究高原隆升
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1019896 - 财政年份:2010
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$ 23.3万 - 项目类别:
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Structural and Thermal Analysis of an Upper Crustal Low-angle Normal Fault in the Sevier Orogen, Southern Nevada
内华达州南部塞维尔造山带上地壳低角度正断层的结构和热分析
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0911772 - 财政年份:2009
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$ 23.3万 - 项目类别:
Standard Grant
Studies of Plateau Uplift Using 4He/3He Apatite Thermochronometry and 13C-18O Carbonate Paleothermometry
利用4He/3He磷灰石测温法和13C-18O碳酸盐古测温法研究高原隆升
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0810324 - 财政年份:2008
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0810328 - 财政年份:2008
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Conference on "Extending a Continent: Architecture, Rheological Coupling and Heat Budget"; Island of Naxos, Greece; FAll 2007
“扩展大陆:建筑、流变耦合和热量预算”会议;
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0729518 - 财政年份:2007
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利用4He/3He磷灰石测温仪和13C-18O碳酸盐古温计研究高原隆升
- 批准号:
0610115 - 财政年份:2006
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0511054 - 财政年份:2006
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0310413 - 财政年份:2003
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