中文摘要：

冲绳马槽是一条背弧，起始的边缘的海盆，在琉球弧沟系统后面定位了。冲绳马槽的形成和进化是亲密地后来在欧亚的板下面菲律宾的海板与 subduction 有关处理晚中新世。马槽的构造进化类似于另外的活跃背弧，例如玛丽安娜马槽和南部的 Lau 盆，所有哪个正在经历起始的 rifting 和随后的传播过程。这研究考察岩石学的所有和 mafic 的 geochemical 数据从冲绳马槽，琉球弧，和菲律宾的海板的暴烈的熔岩，与地球物理的数据结合了在菲律宾的海板琉球弧冲绳马槽系统(职业人员)显示在 subduction 来源(输入)和弧或背弧岩浆(输出)之间的关系。获得的结果证明几个部件易变地涉及冲绳马槽熔岩的 petrogenesis：位于欧亚的板，印度中间海洋的山脉暗岩(MORB ) 类型披风，和和平的 MORB 类型披风下面的亚大陆人 lithospheric 披风。浅水的液体并且深的增加含水易变地与印度 MORB 类型披风的特征从 subducted 部件融化进熔岩的披风来源在冲绳马槽下面在琉球和 subcontinental lithospheric 披风(SCLM ) 下面修改原始披风楔。在马槽和弧的东北结束，而不是印度 MORB 类型披风，和平的 MORB 类型披风统治岩浆来源。沿着琉球弧和冲绳马槽的罢工，在踪迹元素比率和同位素的作文的系统的变化在岩浆来源上反映可变 subduction 输入的一阶的效果。一般来说，岩石学的数据，与地球物理的数据结合了，暗示冲绳马槽正在经历在东北片断，和初生的海洋盆在西南片断，在中间的片断的裂缝繁殖过程，和外壳的延期过程散布过程的 seafloor 发生在西南片断。

英文摘要：

Okinawa Trough is a back-arc, initial marginal sea basin, located behind the Ryukyu Arc-Trench System. The formation and evolution of the Okinawa Trough is intimately related to the subduction process of the Philippine Sea Plate beneath the Eurasian Plate since the late Miocene. The tectonic evolution of the trough is similar to other active back-arcs, such as the Mariana Trough and southern Lau Basin, all of which are experiencing the initial rifting and subsequent spreading process. This study reviews all petrologic and geochemical data of mafic volcanic lavas from the Okinawa Trough, Ryukyu Arc, and Philippine Sea Plate, combined with geophysical data to indicate the relationship between the subduction sources （input） and arc or back-arc magmas （output） in the Philippine Sea Plate-Ryukyu Arc-Okinawa Trough system （PROS）. The results obtained showed that several components were variably involved in the petrogenesis of the Oki-nawa Trough lavas：sub-continental lithospheric mantle underlying the Eurasian Plate, Indian mid-oceanic ridge basalt （MORB）-type mantle, and Pacific MORB-type mantle. The addition of shallow aqueous fluids and deep hydrous melts from subducted components with the characteristics of Indian MORB-type mantle into the mantle source of lavas variably modifies the primitive mantle wedge beneath the Ryukyu and sub-continental lithospheric mantle （SCLM） beneath the Okinawa Trough. In the northeastern end of the trough and arc, instead of Indian MORB-type mantle, Pacific MORB-type mantle dominates the magma source. Along the strike of the Ryukyu Arc and Okinawa Trough, the systematic variations in trace element ratios and isotopic compositions reflect the first-order effect of variable subduction input on the magma source. In general, petrologic data, combined with geophysical data, imply that the Okinawa Trough is experiencing the＂seafloor spreading＂process in the southwest segment,＂rift propagation＂process in the middle seg-ment, and＂crustal extension＂process in