Quantitative Petrography and Mineralogy of Seafloor Basalts and Gabbros
Quantitative Petrography and Mineralogy of Seafloor Basalts and Gabbros
批准号:
8911687
负责人:
Wilfred Bryan
金额:
$28.5万
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1989
资助国家:
美国
项目状态:
已结题
起止时间:
1989-11-15 至 1994-04-30
中文摘要
这是一个对模态相位进行研究的项目 比例,晶体尺寸分布,以及主要和微量 洋中脊玄武岩的元素组成和空间分布 胡安岭(10-12 N)和中部的相关辉长岩 大西洋海脊(北纬45度,北纬36度,北纬23-26度),开曼群岛中部的上升, 西南印度洋山脊。 这是一项基线研究, 在区域范围内进行尝试。 目标是联系 模型比例,晶体尺寸分布,主要和痕量 元素组成对扩展速率、脊分割、 冷却历史和其他因素。 %%% 这项工作代表了一个重大的努力, 如在模态相比例、晶体尺寸等中看到的特征。 大洋中脊区域尺度上的岩石学过程 波峰 这是一个耗时的,岩石学的基本工作, 头等重要。 布莱恩博士是这项研究的领导者 海底玄武岩的研究 迈耶博士是一个年轻的 他非常善于运用现代技术, 岩石学问题 这项工作应该导致重要的知道 关于洋脊顶岩浆作用的知识。
英文摘要
This is a project to carry out a study of modal phase proportions, crystal size distribution, and major and trace element compositions of mid-ocean ridge basalts and spatially associated gabbros from the Juan Ridge (10-12 N), and the Mid- Atlantic Ridge (45 N, 36 N, and 23-26 N), and Mid-Cayman RIse and Southwest Indian Ridge. This is a baseline study not before attempted on a regional scale. The objectives are to relate model proportions, crystal size distributions, major and trace element compositions to spreading rate, ridge segmentation, cooling history, and other factors. %%% This work represents a major effort to relate petrographic signature as seen in modal phase proportions, crystal size, etc. to petrological processes on a regional scale at ocean ridge crests. This is a time consuming, basic effort in petrology of first order importance. Dr. Bryan has been a leader in the study of ocean floor basalts for many years. Dr. Meyer is a young associate who is very adapt at applying modern techniques to petrologic problems. This work should lead to important knew knowledge regarding magmatic processes at ocean ridge crests.
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会议论文
A Combined Petrological, Geochemical and Structural Study ofthe Mid-Atlantic Ridge 23-24'N Latitude Using Alvin and Angus
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批准号:8511979
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项目类别:Continuing Grant
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资助金额:$41.09万
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财政年份:1986
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负责人:Wilfred Bryan
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依托单位:
Phase Equilibrium Controls on the Evolution of Ocean Floor Basalts
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批准号:8315461
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项目类别:Standard Grant
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资助金额:$10.0万
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财政年份:1983
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负责人:Wilfred Bryan
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依托单位:
The Role of Clinopyroxene in the Petrogenesis of Ocean FloorBasalts
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批准号:8110932
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项目类别:Standard Grant
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资助金额:$8.22万
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财政年份:1981
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负责人:Wilfred Bryan
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依托单位:
Kane Fracture Zone: Deep Crustal Stratigraphy and Structure
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批准号:7926302
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项目类别:Standard Grant
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资助金额:$19.03万
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财政年份:1980
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负责人:Wilfred Bryan
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依托单位:
Petrogenesis and Geochemical Evolution of the Deep Ocean Crust
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批准号:7726842
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项目类别:Continuing Grant
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资助金额:$54.15万
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财政年份:1978
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负责人:Wilfred Bryan
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依托单位:
海外基金