The Calcium Cycle and Sea Surface Temperatures: An Investigation Using Ca Isotopes
The Calcium Cycle and Sea Surface Temperatures: An Investigation Using Ca Isotopes
批准号:
0116185
负责人:
J. Douglas Macdougall
金额:
$27.74万
依托单位国家:
美国
项目类别:
Standard Grant
财政年份:
2001
资助国家:
美国
项目状态:
已结题
起止时间:
2001-10-01 至 2005-09-30
中文摘要
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英文摘要
ABSTRACTOCE-0116185A researcher from the University of California-San Diego proposes to continue his studies on the calcium (Ca) cycle in the ocean by making additional measurements of Ca inputs and outputs. Initially, the PI will measure the Ca isotopic composition of additional river water samples to increase the available database and help constrain the present-day river input of Ca. In addition, results from these samples will be used to assess whether the lithology and maturity of the drainage basin affects the Ca isotopic composition of river samples and if adsorption of Ca onto clays influences the isotopic signal. Next, Dr. Macdougall plans to collaborate with Dr. Paytan at Stanford to ascertain if barite samples record the Ca isotopic composition of seawater without the fractionation observed in biogenic carbonate. Lastly, the PI will analyze samples of a single foraminifera (Globigerinoides sacculifer) in downcore sediments from ODP Site 806 in the western Equatorial Pacific which document the Quaternary oxygen isotopic record, to determine whether Ca isotopes can be used as a paleo-temperature proxy.
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Seawater Calcium Isotopes and the Oceanic Ca Cycle
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批准号:9730781
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项目类别:Continuing Grant
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资助金额:$19.89万
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财政年份:1998
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负责人:J. Douglas Macdougall
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依托单位:
Aquisition of a Multi-Collector Thermal Ionization Mass Spectrometer at the Scripps Institution of Oceanography
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批准号:9528787
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项目类别:Standard Grant
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资助金额:$30.1万
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财政年份:1996
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负责人:J. Douglas Macdougall
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依托单位:
The Lithosphere and Volcanic Processes: Isotopic Investigations
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批准号:9218313
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项目类别:Standard Grant
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资助金额:$16.4万
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财政年份:1993
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负责人:J. Douglas Macdougall
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依托单位:
Geochemical Investigations of Major Environmental and Tectonic Changes in the Permian and Triassic
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批准号:9118319
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项目类别:Standard Grant
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资助金额:$15.85万
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财政年份:1992
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负责人:J. Douglas Macdougall
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依托单位:
Isotopic and Trace Element Studies of the Lithospheric Mantle, Petrogenetic Processes and Magma Transport, & the Early Stages of Continental Crust Formation
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批准号:8916858
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项目类别:Continuing Grant
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资助金额:$40.17万
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财政年份:1990
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负责人:J. Douglas Macdougall
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依托单位:
Dating Neovolcanic Ocean Ridge Basalts
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批准号:9012188
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项目类别:Continuing Grant
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资助金额:$16.0万
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财政年份:1990
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负责人:J. Douglas Macdougall
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依托单位:
Isotopic and Chemical Studies of Mafic Rocks from India
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批准号:8813233
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项目类别:Standard Grant
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资助金额:$1.8万
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财政年份:1988
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负责人:J. Douglas Macdougall
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依托单位:
U.S.-China Cooperative Research (Geochem): Chemical and Isotopic Investigations of Mantle Xenoliths from Northeast China
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批准号:8718979
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项目类别:Standard Grant
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资助金额:$2.18万
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财政年份:1988
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负责人:J. Douglas Macdougall
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依托单位:
Isotopic Studies of Volcanic Rocks and Zenoliths as Probes of the Earth's Mantle
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批准号:8618554
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项目类别:Continuing Grant
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资助金额:$44.64万
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财政年份:1987
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负责人:J. Douglas Macdougall
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依托单位:
Field Studies in India: Mafic Rocks and Mantle Xenoliths, Award in Indian Currency
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批准号:8613485
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项目类别:Standard Grant
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资助金额:$3.36万
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财政年份:1987
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负责人:J. Douglas Macdougall
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依托单位:
Marginal Basin Basalts: Isotopic Studies Bearing on Magma Genesis and Source Evolution
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批准号:8716852
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项目类别:Continuing Grant
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资助金额:$25.0万
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财政年份:1987
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负责人:J. Douglas Macdougall
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依托单位:
U and Th Decay Series Disequilibrium in Volcanic Rocks as Indicators of Mantle Composition and Magmatic Processes
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批准号:8519238
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项目类别:Standard Grant
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资助金额:$2.12万
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财政年份:1986
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负责人:J. Douglas Macdougall
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依托单位:
U and Th Decay Series Disequilibrium in Volcanic Rocks as Indicators of Mantle Composition and Magmatic Processes
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批准号:8313577
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项目类别:Continuing Grant
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资助金额:$12.52万
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财政年份:1983
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负责人:J. Douglas Macdougall
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依托单位:
Sfc Award (Indian Currency and U.S. Dollars) For Isotopic And Chemical Studies of the Deccan Plateau
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批准号:8207390
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项目类别:Standard Grant
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资助金额:$7.26万
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财政年份:1983
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负责人:J. Douglas Macdougall
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依托单位:
An Isotopic Study of Subcontinental Mantle Characteristics (Earth Sciences)
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批准号:8213670
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项目类别:Continuing Grant
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资助金额:$19.73万
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财政年份:1982
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负责人:J. Douglas Macdougall
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依托单位:
Isotopic Studies of East Pacific Rise and Marginal Basin Basalts
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批准号:8208741
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项目类别:Standard Grant
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资助金额:$26.84万
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财政年份:1982
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负责人:J. Douglas Macdougall
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依托单位:
Magma Evolution and Chronology For Cascade Volcanoes
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批准号:8026448
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项目类别:Continuing Grant
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资助金额:$12.9万
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财政年份:1981
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负责人:J. Douglas Macdougall
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依托单位:
Sfc Award (Indian Currency) For Isotopic and Chemical Studies of the Deccan Plateau
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批准号:8105600
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项目类别:Standard Grant
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资助金额:$1.88万
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财政年份:1981
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负责人:J. Douglas Macdougall
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依托单位:
Isotopic Studies of East Pacific Rise Basalts
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批准号:8009052
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项目类别:Continuing Grant
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资助金额:$9.71万
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财政年份:1980
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负责人:J. Douglas Macdougall
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依托单位:
Magma Evolution and Chronology For Cascade Volcanoes
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批准号:8000484
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项目类别:Standard Grant
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资助金额:$4.65万
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财政年份:1980
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负责人:J. Douglas Macdougall
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依托单位:
国内基金
海外基金
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