Northern Mariana Backarc Basin, Synthesis of Existing Geophysical Data

对马里亚纳弧后盆地最北端的构造和火山成因历史进行了详细的研究，将利用SeaMARC II两侧的现有数据。扫描和测深巡航以及日本地球物理调查的五个地质调查。将分析常规测深、SeaMARC II和地震反射数据。这些数据将使PI能够测试弧后盆地扩张体系的演化模型。具体来说，PI将研究裂谷地堑的构造结构；裂谷期早期火山活动的性质及分布并确定观察到的结构和火山元素是否与现有模型预测的一致。

Detailed study of the tectonic and vocanogenic history of the northrnmost Mariana backarc basin will be performed using existing data from two SeaMARC II side.scan and bathymetric cruises and five Geological ZSurvey of Japan geophysical surveys. Conventional bathymetry, SeaMARC II and seismic reflection data will be analyzed. These data will allow the PI to test models of evolution of the backarc basin spreading systems. Specifically, the PI will examine the tectonic structure of the rift graben; the nature and distribution of volanism in the early stages of rifting; and determine whether the observed structures and volcanic elements agree with those predicted by existing models.