Layering of the Oceanic Lithosphere: Petrologic Study of Hawaiian Xenoliths and Abyssal Peridotites

9520409 Sen该项目将涉及岩石学、电子探针和离子探针工作，研究来自夏威夷瓦胡岛Pali火山口的一套脊状玄武岩和斜长石玄武岩捕体。这些岩石代表了失去海中脊的岩石圈更大的深度范围，玄武岩大约在9000万年前融化。因此，将重建一个9000万年前的残余熔融柱。这项研究的目标是：(a)破译瓦胡岛海底海洋光圈的垂直元素变化，(b)将这些信息与从深海橄榄岩中获得的信息进行比较，(c)测试岩石圈信息的现有融化模型，(d)获得关于洋中脊玄武岩融化的新见解。＊＊＊

9520409 Sen This project will involve petrographic, electron probe, and ion probe work an a suite of spinal Iherzolite and plagioclase Iherzolite xenoliths from the Pali vent on Oahu, Hawaii. These rocks represent a wider depth range of the lithosphere that lost its mid-ocean ridge basalt melts some 90 million years ago. Thus a 90 million year old residual melting column will be reconstructed. The goals of this research are to (a) decipher vertical elemental variations in the oceanic lighosphere beneath Oahu, (b) compare this information with those obtained from abyssal peridotites, (c) test existing melting models of lithosphere information and (d) obtain new insights on mid-ocean ridge basalt melting. ***