JASON/MEDEA and Alvin Investigation of the Uppermost Oceanic Crust at Hess Deep
JASON/MEDEA and Alvin Investigation of the Uppermost Oceanic Crust at Hess Deep
批准号:
9633725
负责人:
Jeffrey Karson
金额:
$31.05万
依托单位:
依托单位国家:
美国
项目类别:
Continuing Grant
财政年份:
1998
资助国家:
美国
项目状态:
已结题
起止时间:
1998-09-01 至 2001-08-31
中文摘要
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英文摘要
9633725 Karson Most of the ocean crust forms by the eruption of lavas on the sea floor and the injection of lava into existing crust. We can not observe this process, but we can study the rocks affected by this process in ophiolites, in drill holes into the ocean crust, and in faulted sections of ocean crust. The Hess Deep, in the eastern equatorial Pacific Ocean, is the best example of the last type of locality for fast spreading ocean ridges. Two separate teams of scientists have examined this section of ocean crust, but they interpreted the observations quite differently. The proponenets wish to examine a broad section of the Hess Deep crust to determine if it forms by episodes of crustal growth followed by periods of faulting.
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