U.S.- Chile Program: Workshop on Origin of El Laco Iron-Oxide Deposit; San Pedro de Atacama, Chile; November 2004

0405573 NaslundDr.纽约州立大学宾厄姆顿分校的H·理查德·纳斯伦德和圣地亚哥大学的费尔南多·亨里克斯博士将于2004年秋季在智利埃尔拉科火山举行研讨会和实地考察。支持来自国际科学与工程办公室(OISE)以及岩石学和地球化学计划。智利北部安第斯科迪勒拉的El Laco火山含有最年轻、蚀变最少、保存最好的基律纳型磁铁矿-磷灰石矿石。纳斯伦德博士将召集科学家参加一个研讨会，在现场研究埃尔拉科矿床，然后讨论提出的各种成因模型。关于某一特定类型的矿藏的起源，有一场持续不断的科学辩论。如果富含离子氧化物的岩浆在地球上的一个地方喷发，科学家们需要考虑这些岩浆可能对许多其他地质过程的影响，除了矿床的形成。由氧化铁岩浆或热液交代形成的层状矿床也可能对最近在火星上发现的碎屑状赤铁矿矿床的形成有影响。该奖项将为处于职业生涯早期阶段的学生和研究人员提供支持，以参加这次会议，该会议将与在智利普肯附近举行的更大的IAVCEI大会同时举行

0405573NaslundDr. H. Richard Naslund, State University of New York, Binghamton, along with Dr. Fernando Henriquez, University of Santiago, will hold a workshop and field excursion to the volcano in El Laco, Chile in the Fall of 2004. Support comes from the Office of International Science and Engineering (OISE) and the Petrology and Geochemistry Program.The El Laco volcano in the Andean Cordillera of northern Chile contains the youngest, least altered and best preserved magnetite-apatite ores of Kiruna-type. Dr. Naslund will assemble scientists to participate in a workshop to examine the El Laco deposit in the field and then to discuss the various models that have been proposed for its origin. There is an ongoing scientific debate about the origin of a particular class of ore deposits. If ion oxide rich magmas have erupted at even one locality on Earth, scientists need to consider the effects such magmas might have on many other geologic processes in addition to the formation of ore deposits. The formation of stratified ore deposits by Fe-oxide magmas or by hydrothermal replacement might also have implications for the formation of recently identified fragmental hematite deposits on Mars. This award will provide support for students and researchers in the early stages of their career to attend this meeting which will be held along-side of the larger IAVCEI General Assembly meeting in nearby Pucon, Chile