U.S.-Japan Joint Seminar : Magmatic Contributions to Hydrothermal Systems - Magnitude and Importance (November 1991, Kagoshima and Ebino, Japan)

该奖项为六名美国科学家参加美日联合研讨会“岩浆对热液系统的贡献：规模和重要性”提供了支持。热液系统形成于地壳中热量和水相遇的地方。热液系统研究的一个重要方面是岩浆的作用。对化石和活动热液系统的持续研究清楚地表明，岩浆可以以几种不同的方式对这些系统做出贡献，但这种贡献可能难以识别和表征。例如，由于岩浆对热液系统的贡献相对于热液系统的总质量来说很小，并且由于它们与系统的其他成分发生反应而迅速发生变化，因此出现了困难。另一个障碍是所涉及的学科范围广泛，例如包括野外地质学、实验地球化学、热力学建模、水地球化学和地球物理学。为了全面了解岩浆对热液系统演化的重要性，需要这些领域的科学家之间的相互作用。讨论会将于1991年11月10日至16日在日本九州鹿儿岛和江滨野举行。协办人是密歇根大学地质系Stephen E . Kesler教授和日本福冈九州大学矿业系Eiji Izawa博士。具体讨论的主题包括：(1)岩浆的火成岩岩石学；(2)火山喷发液的组成及其与岩浆流体的关系；(3)浅成热液和地热系统流体包裹体及地球化学研究；(4)岩浆热液系统的化学和物理模拟。虽然美国和日本都有许多科学家活跃在这一领域，但这两个群体之间的联系并没有像它应该的那样广泛。这次研讨会将使两国的代表会面并交流信息，预计将产生更广泛的研究合作。

This award provides support for the participation of six US scientists in a joint US-Japan seminar on "Magmatic Contribu- tions to Hydrothermal Systems: Magnitude and Importance". Hydrothermal systems form where heat and water meet in the earths crust. One important aspect of research on hydrothermal systems is the role of magmas. Continuing study of fossil and active hydrothermal systems makes it clear that magmas can contribute to these systems in several different ways but such contributions can be difficult to recognize and characterize. Difficulties arise, for example, because magmatic contributions are small in relation to the total mass of the hydrothermal system and because they undergo rapid modification by reaction with other constituents of the system. A further impediment is the wide range of disciplines involved including, for example, field geology, experimental geochemistry, thermodynamic modelling, water geochemistry and geophysics. In order to gain a comprehensive understanding of the importance of magmatic contributions to the evolution of hydrothermal systems, interaction among scientists in these fields is required. The seminar will be held Novemeber 10-16, 1991 at Kagoshima and Ebino, Kyushu, Japan. The co-organizers are Professor Stephen E Kesler, Department of Geology, University of Michigan, and Dr Eiji Izawa, Department of Mining, Kyushu University, Fukuoka, Japan. Specific topics to be discussed include (1) igneous petrology of magmas; (2) the composition of volcanic discharges and their relation to magmatic fluids; (3) fluid inclusion and geochemical studies of epithermal and geothermal systems; and (4) chemical and physical modelling of magmatic hydrothermal systems. Although the US and Japan each have many Scientists active in this field, contact between these two groups is not as extensive as it could be. The seminar will allow represent- atives from the two countries to meet and exchange information and it is anticipated that more extensive research collaboration will result.