Tectonomagmatic Cycles and the Formation of Oceanic Crust at the Cleft Segment of the Juan de Fuca Ridge

根据该奖项，PI将继续参与Juan de Fuca山脊裂缝部分的合作研究。在与D. Stakes，M.蒂维和其他人。PI的主要职责是对火山岩进行采样，解释火山地貌，并对岩石样本进行实验室分析。2000年开展了一个实地方案，2002年将开展另一个方案。PI有1990年和1994年从该地区收集的其他岩石样本。PI提出了轴向和轴外区域的流动测绘，具有各种目标和目的，其中之一是测试卡佩尔和瑞安的“分裂脊”模型，用于构造和岩浆循环，在目前的脊轴两侧形成对称的地貌。轴向和离轴采样到~ 6公里（150 ka）将被用来测试这一想法，并阐明地壳的创建和演化过程中的近轴区域。计划对ROV收集的样品和蜡芯样品进行主元素和微量元素研究以及同位素研究的完整实验室方案。

Under this award, the PI will continue participating in a collaborative study of the Cleft segment of the Juan de Fuca ridge. The field work has been and will continue to be done with MBARI vessels and ROVs, in active collaboration with D. Stakes, M. Tivey, and others. The PI's main responsibility is in sampling of volcanic rocks, interpreting volcanic land forms, and undertaking laboratory analyses of the rock samples. One field program occurred in 2000, and another will take place in 2002. The PI has additional rock samples from the area collected in 1990 and 1994. The PI proposes flow mapping of the axial and off-axis region with a variety of goals and objectives, one of which is to test the "split-ridge" model of Kappel and Ryan for tectonic and magmatic cycles forming the symmetrical land forms on either side of the present ridge axis. Axial and off-axis sampling out to ~6km (150 ka) will be used to test this idea, and elucidate the processes of crust creation and evolution in the near-axis region. A full laboratory program of major and trace element studies and isotopic studies are planned for ROV-collected and wax cored samples.