Collaborative Research: RUI: Translation and Accretion of the Yakutat Microplate and Prince William Terrane, Alaska
合作研究:RUI:Yakutat 微孔板和阿拉斯加威廉·泰拉尼王子的翻译和增生
基本信息
- 批准号:1727991
- 负责人:
- 金额:$ 23.26万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2017
- 资助国家:美国
- 起止时间:2017-09-01 至 2024-08-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The North American Cordillera was assembled through the formation, accretion, and translation of a number of terranes and much of this assembly has occurred since the Cretaceous. Since this time, most of the terrane translation was northward due to the relative motion of Pacific plates with North America. Despite decades of investigations on terrane movement and translation much remains unknown about where these terranes originated and how far they traveled before becoming part of the amalgamation of terranes in Alaska. This project brings new analytical techniques to bear on this problem focusing on the Yakutat terrane, which is now colliding with southern Alaska driving the uplift of the Chugach Range. This research tests the idea that the Yakutat terrane originated far to the south in the Pacific Northwest and moved parallel to the continental margin before colliding with southern Alaska. The project would advance desired societal outcomes by participation of students from underrepresented minorities in STEM, increased public scientific literacy and public engagement with STEM through development of brochures for the National Parks and National Forests and development of a diverse, globally competitive STEM workforce through active participation of undergraduate students in research at primarily undergraduate institutions.The development and translation history of the collage of terranes that make up most of Alaska are debated, including the Chugach and Prince William terranes, and Yakutat terrane. Some scenarios envision a setting for the Chugach and Prince William terranes that was more or less in place, while other scenarios (originally based on paleomagentic data) suggest long transport (3000 km). The difference in these ideas is profound, but large-scale translation of terranes on strike-slip faults may be a fundamental and underappreciated process in the Cordillera. High-precision and high-volume U/Pb and fission track dating of detrital zircon has focused the lens with which the problem can be examined, and rigorous predictions can be made by making geological comparisons of units along the Cordilleran margin to better understand translation history and total offset. Preliminary data show a number of assumptions about the Chugach-Prince William terrane and Yakutat terrane collision zone need to be revised, including: (1) turbidites of the Yakutat terrane may not be part of the Chugach and Prince William terranes as previously assumed; and (2) the basaltic basement of the Yakutat terrane may have formed in a transtensional environment along the North American margin. The hypothesis tested here is that transport of the Yakutat terrane to Alaska resulted in a truncated margin in the Pacific Northwest, and slip on the Queen Charlotte-Fairweather fault system may have partly accommodated the 1800 km of dextral translation, which may be one of the longest offsets shown by geological relationships on faults in the Cordillera. The analytical approach of this research involves the analysis of detrital zircon using several techniques, some of which are new and innovative. These approaches include: (a) U/Pb of detrital zircon to determine maximum depositional age and provenance, including targeting Precambrian sources; (b) fission track on detrital zircons to provide cooling ages directly related to exhumation, including double dating grains (fission track and U/Pb); (c) Raman spectroscopy on detrital to provide radiation damage dates; (d) Hf isotopes in detrital zircon to provide crustal signature; and (e) core-rim dating to date igneous and metamorphic rims. Determining radiation damage ages on detrital zircon is a new approach that promises to provide deeper insight into detrital studies. Although zircon is central to this effort, student projects that use geochemistry and petrology will focus on better understanding the development of the igneous rocks associated with these terranes.
北美科迪勒拉是通过许多地体的形成、增生和平移而形成的,这种组合大部分发生在白垩纪之后。从那时起,由于太平洋板块与北美板块的相对运动,大部分地形的平移都是向北的。尽管对地形运动和平移进行了数十年的调查,但对于这些地形的起源以及它们在成为阿拉斯加地形合并的一部分之前走了多远,仍然存在许多未知。这个项目带来了新的分析技术来解决这个问题,重点是雅库塔地体,它现在与阿拉斯加南部碰撞,推动了楚格奇山脉的隆起。这项研究验证了雅库特地体起源于太平洋西北部遥远的南部,并在与阿拉斯加南部碰撞之前平行于大陆边缘移动的观点。该项目将通过以下方式促进预期的社会成果:来自代表性不足的少数民族的学生参与STEM;通过为国家公园和国家森林编写小册子,提高公众科学素养和公众对STEM的参与;通过本科生积极参与主要本科院校的研究,培养一支多样化、具有全球竞争力的STEM劳动力队伍。构成阿拉斯加大部分地区的拼贴地的发展和翻译历史存在争议,包括楚格奇和威廉王子地,以及雅库特地。一些场景设想了Chugach和William王子地形的设置或多或少到位,而其他场景(最初基于古地磁数据)则建议长途运输(3000公里)。这些观点的差异是深刻的,但在科迪勒拉,走滑断层上的大规模地体平移可能是一个基本的、未被重视的过程。碎屑锆石的高精度、高体积U/Pb和裂变径迹测年为研究这一问题提供了焦点,通过对科迪勒拉边缘各单元进行地质比较,可以更好地了解平移历史和总偏移量,从而做出严格的预测。初步资料表明,关于丘加奇-威廉王子地体和雅库特地体碰撞带的一些假设需要修正,包括:(1)雅库特地体的浊积岩可能不像以前假设的那样是丘加奇和威廉王子地体的一部分;(2)雅库塔地体的玄武岩基底可能形成于沿北美边缘的张拉环境。这里测试的假设是,雅库特地形向阿拉斯加的运输导致太平洋西北部的边缘被截断,而夏洛特皇后-费尔韦瑟断层系统的滑动可能部分地容纳了1800公里的右平移,这可能是科迪勒拉断层的地质关系所显示的最长偏移之一。本研究的分析方法涉及使用几种技术对碎屑锆石进行分析,其中一些技术是新的和创新的。这些方法包括:(a)通过碎屑锆石的U/Pb来确定最大沉积年龄和物源,包括针对前寒武纪的物源;(b)碎屑锆石的裂变径迹提供了与发掘直接相关的冷却年龄,包括双重定年颗粒(裂变径迹和U/Pb);(c)碎片拉曼光谱,提供辐射损伤日期;(d)碎屑锆石中的Hf同位素提供地壳特征;(e)岩心边缘测定火成岩和变质岩边缘的年代。确定碎屑锆石的辐射损伤年龄是一种新的方法,有望为碎屑研究提供更深入的见解。虽然锆石是这项工作的核心,但使用地球化学和岩石学的学生项目将侧重于更好地了解与这些地体相关的火成岩的发展。
项目成果
期刊论文数量(24)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
Age and tectonic setting of the Paleocene Glacier Island volcanic sequence of the Orca Group in Prince William Sound, Alaska.
阿拉斯加威廉王子湾虎鲸群古新世冰川岛火山序列的年龄和构造环境。
- DOI:10.1130/abs/2019cd-329372
- 发表时间:2019
- 期刊:
- 影响因子:0
- 作者:Noseworthy, C.
- 通讯作者:Noseworthy, C.
THE TIME-TRANSGRESSIVE SANAK-BARANOF PLUTONIC BELT, ALASKA: A TALE OF DIACHRONOUS TIMING OF FORE-ARC BURIAL AND PLUTON EMPLACEMENT
跨越时间的阿拉斯加萨纳克-巴拉诺夫深成带:弧前埋藏和深成埋藏的历时时间故事
- DOI:10.1130/abs/2018am-322269
- 发表时间:2018
- 期刊:
- 影响因子:0
- 作者:Davidson, Cameron;Garver, John I.
- 通讯作者:Garver, John I.
Zircon facies in the Paleocene-Eocene Orca Group indicate a provenance link to the Chugach Terrance, Prince William Sound, Alaska.
古新世-始新世虎鲸群中的锆石相表明其起源与阿拉斯加威廉王子湾的楚加奇台地有关。
- DOI:
- 发表时间:2019
- 期刊:
- 影响因子:0
- 作者:Fisher, W.S.
- 通讯作者:Fisher, W.S.
DETRITAL ZIRCON FROM THE SCHIST OF NUNATAK FIORD NEAR YAKUTAT, ALASKA INDICATE ALLIANCE TO THE CHUGACH-PRINCE WILLIAM TERRANE
产自阿拉斯加雅库塔特附近努纳塔克峡湾片岩的碎屑锆石表明与楚加奇威廉王子地块结盟
- DOI:10.1130/abs/2020cd-347244
- 发表时间:2020
- 期刊:
- 影响因子:0
- 作者:Thota, Rohit;Davidson, Cameron;Garver, John I.
- 通讯作者:Garver, John I.
Uplift and exhumation of the Russell Fiord and Boundary blocks along the northern Fairweather transform fault, Alaska
阿拉斯加费尔韦瑟转换断层北部沿拉塞尔峡湾和边界地块的隆起和折返
- DOI:10.1130/l1011.1
- 发表时间:2019
- 期刊:
- 影响因子:2.4
- 作者:Schartman, Anna;Enkelmann, Eva;Garver, John I.;Davidson, Cameron M.
- 通讯作者:Davidson, Cameron M.
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Cameron Davidson其他文献
CamDavidsonPilon/lifelines: v0.24.16
CamDavidsonPilon/生命线:v0.24.16
- DOI:
- 发表时间:
2020 - 期刊:
- 影响因子:0
- 作者:
Cameron Davidson;Jonas Kalderstam;Noah Jacobson;P. Zivich;Ben Kuhn;Mike Williamson;sean;AbdealiJK;A. Fiore;Deepyaman Datta;Luis Moneda;Gabriel;Daniel Wilson;Alex Parij;A. Moncada;K. Stark;Steven Anton;Miguel Sancho Peña;Lilian Besson;K. Singaravelan;Jona;Harshavardhan Gadgil;D. Golland;S. Hussey;Ravin Kumar;M. Begun;J. Noorbakhsh;Andreas Klintberg;A. Rendeiro;A. Flaxman - 通讯作者:
A. Flaxman
Hyperspectral Cathodoluminescence Imaging and Analysis Extending from Ultraviolet to Near Infrared
从紫外延伸到近红外的高光谱阴极发光成像和分析
- DOI:
10.1017/s1431927612013505 - 发表时间:
2012 - 期刊:
- 影响因子:2.8
- 作者:
C. MacRae;N. Wilson;A. Torpy;Cameron Davidson - 通讯作者:
Cameron Davidson
An open framework for the reproducible study of the iterated prisoner's dilemma
重复囚徒困境可重复研究的开放框架
- DOI:
10.5334/jors.125 - 发表时间:
2016 - 期刊:
- 影响因子:0
- 作者:
Vincent A. Knight;Owen Campbell;Marc Harper;K. Langner;James Campbell;Thomas Campbell;Alex Carney;M. Chorley;Cameron Davidson;Kristian Glass;Nikoleta E. Glynatsi;Tom'avs Ehrlich;Martin Jones;Georgios D. Koutsovoulos;H. Tibble;Muller Jochen;Geraint I. Palmer;Piotr Petunov;P. Slavin;T. Standen;Luis Visintini;Karl Molden - 通讯作者:
Karl Molden
Cameron Davidson的其他文献
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{{ truncateString('Cameron Davidson', 18)}}的其他基金
MRI: Acquisition of a Variable Pressure Scanning Electron Microscope at Carleton College
MRI:在卡尔顿学院购买可变压力扫描电子显微镜
- 批准号:
1827966 - 财政年份:2018
- 资助金额:
$ 23.26万 - 项目类别:
Standard Grant
Collaborative Research: Provenance and Thermal Evolution of the Chugach-Prince William Terrane Flysch, Southern Alaska
合作研究:阿拉斯加南部楚加奇王子 William Terrane Flysch 的起源和热演化
- 批准号:
1116536 - 财政年份:2011
- 资助金额:
$ 23.26万 - 项目类别:
Continuing Grant
Acquisition of a Microanalysis System for a Scanning Electron Microscope at Carleton College.
卡尔顿学院购买扫描电子显微镜微量分析系统。
- 批准号:
0420680 - 财政年份:2004
- 资助金额:
$ 23.26万 - 项目类别:
Standard Grant
Collaborative Research: A Multidisciplinary Study of an Exhumed Active Continental Margin: The Wrangell Transect, SE Alaska.
合作研究:对挖掘出来的活动大陆边缘的多学科研究:阿拉斯加东南部的兰格尔断面。
- 批准号:
0207328 - 财政年份:2002
- 资助金额:
$ 23.26万 - 项目类别:
Standard Grant
Collaborative Research: A Multidisciplinary Study of an Exhumed Active Continental Margin: The Wrangell Transect, SE Alaska.
合作研究:对挖掘出来的活动大陆边缘的多学科研究:阿拉斯加东南部的兰格尔断面。
- 批准号:
0234003 - 财政年份:2002
- 资助金额:
$ 23.26万 - 项目类别:
Standard Grant
Acquisition of a scanning electron microscope, Beloit College
购买扫描电子显微镜,伯洛伊特学院
- 批准号:
0079326 - 财政年份:2000
- 资助金额:
$ 23.26万 - 项目类别:
Standard Grant
Collaborative Research: Accrete: An Integrated Study of Continental Growth at a Convergent to Transpressive Plate Margin
合作研究:累积:板块边缘收敛处大陆生长的综合研究
- 批准号:
9526562 - 财政年份:1996
- 资助金额:
$ 23.26万 - 项目类别:
Continuing Grant
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- 批准号:10774081
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- 项目类别:面上项目
相似海外基金
Collaborative Research: RUI: Continental-Scale Study of Jura-Cretaceous Basins and Melanges along the Backbone of the North American Cordillera-A Test of Mesozoic Subduction Models
合作研究:RUI:北美科迪勒拉山脊沿线汝拉-白垩纪盆地和混杂岩的大陆尺度研究——中生代俯冲模型的检验
- 批准号:
2346565 - 财政年份:2024
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Collaborative Research: RUI: Glacier resilience during the Holocene and late Pleistocene in northern California
合作研究:RUI:北加州全新世和晚更新世期间的冰川恢复力
- 批准号:
2303409 - 财政年份:2024
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Collaborative Research: RUI: IRES Track I: From fundamental to applied soft matter: research experiences in Mexico
合作研究:RUI:IRES 第一轨:从基础到应用软物质:墨西哥的研究经验
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2426728 - 财政年份:2024
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RUI: Collaborative Research: Assessing the causes of the pyrosome invasion and persistence in the California Current Ecosystem
RUI:合作研究:评估加州当前生态系统中火体入侵和持续存在的原因
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Collaborative Research: RUI: Continental-Scale Study of Jura-Cretaceous Basins and Melanges along the Backbone of the North American Cordillera-A Test of Mesozoic Subduction Models
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Collaborative Research: RUI: Frontal Ablation Processes on Lake-terminating Glaciers and their Role in Glacier Change
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Collaborative Research: RUI: Frontal Ablation Processes on Lake-terminating Glaciers and their Role in Glacier Change
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