Collaborative Research: Dating Sedimentary Sequences: In Situ U/Th-Pb Microprobe Dating of Early Diagenetic Monazite in Neoproterozoic Black Shales
Collaborative Research: Dating Sedimentary Sequences: In Situ U/Th-Pb Microprobe Dating of Early Diagenetic Monazite in Neoproterozoic Black Shales
批准号:
0643364
负责人:
Laura Crossey
金额:
$2.92万
依托单位:
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2007
资助国家:
美国
项目状态:
已结题
起止时间:
2007-07-15 至 2009-06-30
中文摘要
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英文摘要
This study will provide new technologies to directly date sedimentary sequences. Proof of the concept will come from dating Neoproterozoic black shales in Grand Canyon via in situ U/Th-Pb microprobe dating of authigenic grains that were precipitated by microbial processes near the time of lithification. New technologies will minimize electron beam diameter, count rate, background regression, conductive coating, interference correction, and error estimation. Geologic applications include precise dating of Neoproterozoic C-isotope excursions.
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批准号:1627930
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项目类别:Continuing Grant
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资助金额:$8.45万
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财政年份:2016
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负责人:Laura Crossey
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依托单位:
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负责人:Laura Crossey
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"Continental Smokers": evaluating mantle degassing, CO2 flux, geomicrobiology, and water quality in extensional continental regimes
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批准号:0838575
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项目类别:Continuing Grant
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资助金额:$29.5万
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财政年份:2009
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负责人:Laura Crossey
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依托单位:
Collaborative Research: CO2 Springs and Travertines of the Southwestern US: Hydrologic Pathways Linking Tectonism to Water Quality
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批准号:0538304
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项目类别:Continuing Grant
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财政年份:2006
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负责人:Laura Crossey
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依托单位:
Acquisition of an ICP-OES for Geoscience Research at the University of New Mexico
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批准号:0447402
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项目类别:Standard Grant
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资助金额:$16.26万
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财政年份:2005
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负责人:Laura Crossey
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依托单位:
Geoscience Education at Grand Canyon: Integrating Research and Education through the Trail of Time Exhibit (planning grant)
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批准号:0314133
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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:2003
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负责人:Laura Crossey
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依托单位:
Dissected Hydrologic System at Grand Canyon: Interaction Between Upper and Lower World Waters in Modern Springs and Ancient Travertines
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批准号:0310323
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项目类别:Standard Grant
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资助金额:$13.77万
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财政年份:2003
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负责人:Laura Crossey
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依托单位:
Biogeochemical Cycling of Redox-Sensitive Metals During Surface-Subsurface Water Exchange in a Shallow Alluvial Aquifer
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批准号:9630285
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项目类别:Standard Grant
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资助金额:$34.0万
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财政年份:1996
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依托单位:
U.S.-Mexico Cooperative Science Program: Materials Responseto Dynamic High Pressure; ICAM Support
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批准号:9504110
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项目类别:Standard Grant
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资助金额:$0.54万
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财政年份:1995
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负责人:Laura Crossey
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依托单位:
Sedimentation and Diagenesis of the Creede Fm., CO: Subsurface Evaluation and Correlation with Outcrop Studies
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批准号:9116021
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项目类别:Standard Grant
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资助金额:$8.7万
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财政年份:1992
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负责人:Laura Crossey
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依托单位:
Environments of Sedimentation and Controls on Diagenesis of the Creede Fm., Colorado
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批准号:9005344
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项目类别:Standard Grant
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资助金额:$7.72万
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财政年份:1990
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负责人:Laura Crossey
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依托单位:
国内基金
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