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。会议的总目标是为火山大省制定替代模式。这将通过对羽流假说进行严格审查，根据其最初提出以来的三十年研究，讨论和评估替代模型，以及确定该领域未来的主要任务来实现。会议将持续一周，限于60名与会者，并以讨论为主要形式。这将是就这一主题举行的第一次会议，并将为一个尚处于萌芽阶段的主题，即大型火山省的替代机制，提供重点和定义。羽流假说[Morgan， 1971]在很大程度上被不加批判地引用了30年，用来解释在板块内和靠近山脊的地方（如黄石公园、夏威夷和冰岛）大量、长期存在的火山活动的起源。它被普遍采用为地质学的一个基本前提，并在各级教育机构中作为一个难题呈现。然而，随着越来越好的数据的获取，例如辐射年龄和全地幔层析成像，人们越来越清楚地认识到，大型火山区域远比最初设想的要复杂得多，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设。本次会议将为该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.