Plume IV Conference: Beyond the Plume Hypothesis

彭罗斯会议“羽流IV：超越羽流假说”将于2003年8月在冰岛举行。会议的总体目标是为火山大省开发替代模式。这将通过认真审查羽流假说自其最初提出以来的三十年研究、讨论和评估替代模型以及确定该领域今后的主要任务来实现。会议将持续一周，限60人参加，以讨论为主。这将是就这一主题举行的第一次会议，并将为一个萌芽主题--大火山省份的替代机制--提供重点和定义。30年来，人们基本上不加批判地引用了烟柱假说[Morgan，1971]，来解释黄石公园、夏威夷和冰岛等板块内和山脊附近地区巨大而持久的火山活动的起源。它被普遍地作为地质学的一个基本前提而被采纳，并在各级教育环境中呈现为一种情景。然而，随着辐射年龄和全地幔断层成像等越来越优越的数据的获得，越来越明显的是，大型火山区比最初假设的要复杂得多，为了适应新的数据，有必要越来越详细地阐述最初的简单羽流假说。这次会议将为这一主题提供一个基础论坛。

A Penrose Conference "Plume IV: Beyond the Plume Hypothesis" will be run in Iceland, August 2003. The overall objective of the Conference is to develop alternative models for large volcanic provinces. This will be achieved through critical examination of the plume hypothesis in the light of the three decades of research since its original proposal, discussion and assessment of alternative models, and identification of the major tasks ahead in the field. The Conference will last a week, be limited to 60 participants and have a dominantly discussion-based format. It will be the first conference to be held on this subject, and will provide focus and definition to an embryonic subject, that of alternative mechanisms for large volcanic provinces. The plume hypothesis [Morgan, 1971] has been invoked, largely uncritically, for 30 years, to explain the origin of voluminous, long-lived volcanism at intraplate and near- ridge locations such as Yellowstone, Hawaii and Iceland. It is popularly adopted as a fundamental premise of geology and presented as isfactle in educational settings at all levels. However, with the acquisition of ever-superior data, e.g. radiometric ages and whole-mantle tomography, it is becoming increasingly clear that large volcanic areas are far more complex than initially supposed, and it has been necessary to elaborate increasingly the original simple plume hypothesis in order to fit the new data. This conference will provide a foundation forum for the subject.