COLLABORATIVE RESEARCH: 40 Ar/39 Ar and Structural Investi-gation and Constraints for the Tectonothermal Evolution of the Avalon Composite Terrane, SW New Brunswick
COLLABORATIVE RESEARCH: 40 Ar/39 Ar and Structural Investi-gation and Constraints for the Tectonothermal Evolution of the Avalon Composite Terrane, SW New Brunswick
批准号:
9004024
负责人:
R. David Dallmeyer
金额:
$9.99万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
1990
资助国家:
美国
项目状态:
已结题
起止时间:
1990-08-01 至 1994-01-31
中文摘要
阿巴拉契亚山脉北方的阿瓦隆复合山脉 造山带代表了一组构造地层学的集合体, 在前寒武纪晚期合并, 早-中古生代进入北美, 随后分散在相对于每个 其他. 内组成地体元素的识别 复合材料的使用一直存在争议, 构造演化是不确定的, 并合、增生和扩散的限制很差。 该项目将通过一项全面的 一个新构造带构造和40 Ar/39 Ar年代学研究 阿瓦隆复合材料的代表性部分, 新玩法西南部,最近的研究表明, 可能存在重要晚期前寒武纪界线。 结果 40 Ar/39 Ar同位素普查结果表明, 在拟议的研究领域可以作出重大贡献。 该项目结合了详细的构造测绘运动学 40 Ar/39 Ar分析和岩石学研究 矿物年代测定旨在解决该地区的构造 进化 这项研究将大大提高对 记录的构造活动的性质、时间和运动学 在阿瓦隆复合材料中, 有利于后期组分的识别和对比 前寒武纪化石。
英文摘要
The Avalon composite terrane of the northern Appalachian orogen represent a college of tectonostratigraphic terranes that were amalgamated in the late Precambrian, accreted as a composite terrane to North America during the early-middle Paleozoic, and were subsequently dispersed variable distances relative to each other. Identification of the constituent terrane elements within the composite terrane has been controversial, their tectonothermal evolution is uncertain, and the nature and timing of amalgamation, accretion and dispersal are poorly constrained. This project will address these issue through a comprehensive structural and 40Ar/39Ar geochronological study of a representative portion of the Avalon composite terrane in southwestern New Brunswick where recent studies have shown an important late Precambrain terrane boundary may exist. Results of a reconnaissance 40Ar//39Ar isotopic survey indicate that a significant contribution can be made in the proposed study area. The project couples detailed structural mapping kinematic analysis and petrological studies with a program of 40Ar/39Ar mineral dating designed to resolve the region's tectonothermal evolution. The study will substantially improve knowledge of the nature, timing and kinematics of tectonothermal events recorded in the Avalon composite terrane and, thereby, will greatly facilitate the identification and correlation of constituent late Precambrian terranes.
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Tectonothermal Evolution of the Internal Alpine-Carpathian Orogen: Implications for Collisional Tectonics
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批准号:9316042
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项目类别:Standard Grant
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资助金额:$12.39万
-
财政年份:1994
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负责人:R. David Dallmeyer
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依托单位:
COLLABORATIVE RESEARCH: Taconic vs. Acadian Tectonothermal Record in the Blue Ridge: Rb-Sr and 40 Ar/39 Ar Mineral Age Constraints
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批准号:9117491
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项目类别:Continuing Grant
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资助金额:$9.29万
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财政年份:1992
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负责人:R. David Dallmeyer
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依托单位:
Tectonothermal Evolution of the Cadomian Orogen in the North Armorican Massif and Circum-Atlantic Correlations
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批准号:9017271
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项目类别:Continuing Grant
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资助金额:$11.01万
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财政年份:1991
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负责人:R. David Dallmeyer
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依托单位:
40Ar/39Ar Mineral Age Constraints on the Tectonnthermal Evolution of the East Greenland Caledonides: Collaboration with the Greenland Geological Survey
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批准号:9101444
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项目类别:Standard Grant
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资助金额:$5.0万
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财政年份:1991
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负责人:R. David Dallmeyer
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依托单位:
40 Ar/39 Ar Geochronological Research in the Sambagawa and Adjacent Terranes, Japan: Analytical Expenses
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批准号:8915135
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项目类别:Continuing Grant
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资助金额:$6.49万
-
财政年份:1990
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负责人:R. David Dallmeyer
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依托单位:
U.S.-Japan Cooperative Research: 40Ar/39Ar Geochronology in the High-Pressure Sambagawa Terrane, Japan
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批准号:8815932
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项目类别:Standard Grant
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资助金额:$1.22万
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财政年份:1989
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负责人:R. David Dallmeyer
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依托单位:
Tectonothermal Evolution of the Southern Iberian Massif: 40 AR/39 AR Age Controls on Terrane Accretion
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批准号:8720322
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项目类别:Standard Grant
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资助金额:$9.85万
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财政年份:1988
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负责人:R. David Dallmeyer
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依托单位:
40Ar/39Ar Whole-Rock Slate Ages form the Robertson Bay Terrane, NVL. Antarctica, Documenting Diachronous Orogeny asa Result of Terrane Accretion
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批准号:8613753
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项目类别:Standard Grant
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资助金额:$4.37万
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财政年份:1987
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负责人:R. David Dallmeyer
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依托单位:
Investigation of the Tectonothermal Development of the Mauritanides: Relationship to the Evolution of the Appalachian Orogen
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批准号:8514013
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项目类别:Standard Grant
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资助金额:$9.17万
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财政年份:1986
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负责人:R. David Dallmeyer
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依托单位:
Terranes In the Circum-Atlantic Paleozoic Orogens; A GSA (Geological Society of America) Penrose Conference
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批准号:8415567
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项目类别:Standard Grant
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资助金额:$0.5万
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财政年份:1985
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负责人:R. David Dallmeyer
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依托单位:
Investigation of the Extent and Timing of Scandian Vs. Earlier Tectonothermal Activity in the Central Scandinavian Caledonides
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批准号:8407027
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项目类别:Continuing Grant
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资助金额:$8.16万
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财政年份:1984
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负责人:R. David Dallmeyer
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依托单位:
Collaborative Investigation of the Alto Allochthon: Its Origin, Tectonothermal History, and Significance in the Evolution of Crystalline Thrust
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批准号:8207419
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项目类别:Continuing Grant
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资助金额:$5.26万
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财政年份:1982
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负责人:R. David Dallmeyer
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依托单位:
Collaborative Structural and Geochronologic Investigation Of Alleghenian Deformational Events in the Appalachian Foreland
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批准号:8208610
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项目类别:Continuing Grant
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资助金额:$6.29万
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财政年份:1982
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负责人:R. David Dallmeyer
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依托单位:
An Investigation of the Extent and Timing of Late Paleozoic Tectonothermal Activity in the Piedmont of Central South Carolina
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批准号:8020469
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项目类别:Standard Grant
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资助金额:$5.27万
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财政年份:1981
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负责人:R. David Dallmeyer
-
依托单位:
Collaborative Research on the Nature, Extent and Timing Of the Alleghanian Metamorphism in Southern New England
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批准号:8016007
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项目类别:Continuing Grant
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资助金额:$3.2万
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财政年份:1980
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负责人:R. David Dallmeyer
-
依托单位:
Collaborative Research on the Nature, Extent, and Timing of The Alleghanian Metamorphism in Southern New England
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批准号:7905297
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项目类别:Continuing Grant
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资助金额:$3.18万
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财政年份:1979
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负责人:R. David Dallmeyer
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依托单位:
Penrose Conference on Relative Chronology of Thrusting Within the Southern and Central Appalachians, Helen, GeorgiaMay 7-13, 1978
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批准号:7723524
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项目类别:Standard Grant
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资助金额:$0.57万
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财政年份:1978
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负责人:R. David Dallmeyer
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依托单位:
A Geochronologic and Petrologic Study of the Paleozoic Magmatic and Metamorphic History of South-Central Maine
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批准号:7615383
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项目类别:Standard Grant
-
资助金额:$2.95万
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财政年份:1976
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负责人:R. David Dallmeyer
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依托单位:
Late Proterozoic Thermal and Tectonic History of the CentralAppalachian Mountains
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批准号:7521828
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项目类别:Standard Grant
-
资助金额:$1.95万
-
财政年份:1975
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负责人:R. David Dallmeyer
-
依托单位:
国内基金
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