Eruptive History of the Western Volcanic Zone, Iceland

P.I: Sinton项目编号：88 -11276机构：夏威夷大学标题：冰岛西部火山区的喷发历史这项工作的目的是通过绘制熔岩流图，确定其喷发量和其他特征，包括化学成分，来确定冰岛西部火山区约170公里的大西洋中脊的喷发历史。对单次喷发产物的详细研究将确定喷发口的物理性质、熔岩流形态、裂缝长度和喷发量，以及与这些特征相关的化学变化。西部火山区内所有火山喷发的综合数据将构成一个史无前例的组合，包括发生在大洋中脊相当一部分的火山喷发的频率、数量、化学变化和空间分布。研究结果将用于推断这一扩张缓慢但岩浆供应充足的洋中脊次火山岩浆储层的性质、规模和发生的过程。

P.I.: Sinton Proposal Number: 98-11276 Institution: University of Hawaii Title: Eruptive history of the Western Volcanic Zone, Iceland The objective of this work is to determine the eruptive history of ~170 km of Mid-Atlantic Ridge exposed in the Western Volcanic Zone of Iceland by mapping of lava flows, determining their eruptive volumes and other characteristics including chemical composition. Detailed study of the products of single eruptions will determine the physical nature of eruptive vents, lava flow morphologies, fissure lengths, and eruptive volumes, as well as the chemical variations associated with these features. The combined data for all eruptions within the Western Volcanic Zone will constitute an unprecedented composite of the frequency, volumes, chemical variability and spatial distribution of volcanic eruptions occurring along a significant portion of mid-ocean ridge. The results will be used to infer the nature, size, and processes occurring in subvolcanic magma reservoirs for this slow spreading but high magma supply mid- ocean ridge.