U.S. -Philippines Cooperative Research: Geochemical Investigation of ARC Magmas from Camiguin Island, Southern Philippines

本提案要求提供资金，允许迈阿密大学海洋地质和地球物理系Paterno R. Castillo博士与菲律宾火山学和地震学研究所Raymundo S. Punongbayan博士进行为期24个月的关于卡米昆岛弧岩浆的合作研究方案。菲律宾南部。本研究的主要目的是：(1)研究Camiguin岛上明显规律的火山活动周期；(2)确定造成这种火成岩活动模式的最可能的分异机制；(3)限制Camiguin和Balatukan（邻近棉兰老岛）火山喷发的岩浆的来源组成。(4)将Camiguin和Balatukan的岩浆源组成与菲律宾北部东、西弧火山中心的岩浆源组成进行比较对比；(5)模拟菲律宾地下超俯冲地幔的长期历史，以确定其是洋中脊玄武岩、洋岛玄武岩，还是洋中脊玄武岩。或者是次大陆型。合作者希望这个项目的结果能让人们更好地了解卡米昆火山的性质，并有希望预测该岛未来的火山活动。此外，该项目的结果将有助于地球科学家全面了解岛弧岩浆活动的来源。目前的项目将使这些德高望重的科学家能够将他们的才能和兴趣结合起来，实现互利共赢。该项目与“发展中国家科学项目”的目标相关，该项目旨在通过交流科学信息、思想、技能和技术，提高美国科学家和工程师与发展中国家同行之间的合作水平。和技术，并通过合作解决互利的问题。

This proposal requests funds to permit Dr. Paterno R. Castillo, Division of Marine Geology and Geophysics, University of Miami, to pursue with Dr. Raymundo S. Punongbayan, Philippine Institute of Volcanology and Seismology, for a period of 24 months, a program of cooperative research on the arc magmas from Camiguin Island, southern Philippines. The main objectives of this study are to (1) investigate the apparently regular cycle of vulcanism on Camiguin Island, (2) identify the most probable differentiation mechanisms responsible for this pattern of igneous activity, (3) constrain the source composition of magmas erupted from Camiguin and Balatukan (on nearby Mindanao Island) volcanoes, (4) compare and contrast the magma source composition of Camiguin and Balatukan with those of volcanic centers in the eastern and western arcs of northern Philippines, and (5) model the long-term history of the suprasubduction mantle beneath the Philippines to determine whether it was mid-ocean ridge basalt, ocean island basalt, or sub-continental type. The collaborators expect the results of this project to lead to a better understanding of the nature of Camiguin volcanoes and, hopefully, to predict future volcanic activity on the island. In addition, results of the project will help earth scientists gain a comprehensive understanding of the source of island arc magmatism. The present project will allow these highly respected scientists to combine their talents and interests for mutual benefit. This project is relevant to the objectives of the Science in Developing Countries Program which seeks to increase the level of cooperation between U.S. scientists and engineers and their counterparts in developing countries through the exchange of scientific information, ideas, skills, and techniques and through collaboration on problems of mutual benefit.