Ages of seamounts, islands, and plateaus on the Pacific plate
Ages of seamounts, islands, and plateaus on the Pacific plate
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DOI：
10.1130/0-8137-2388-4.71
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发表时间：
2005
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影响因子：
--
通讯作者：
V. Clouard;A. Bonneville
中科院分区：
文献类型：
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作者：
V. Clouard;A. Bonneville
热点理论首先是基于对太平洋板块上线性火山链的观测并假设这些火山链内的年龄进展而提出的。因此，了解岛屿和海山的年龄对于分析板内火山活动和破译热点轨迹的历史至关重要。在本文中，我们回顾了已发表的太平洋板块岛屿和海山的辐射年龄，以帮助进一步重建。我们提供了按链排序并进一步按岛屿或海山排序的 1645 个辐射年龄汇编，以及每个链的简要概述。除一些海洋高原（例如沙茨基海隆）外，未考虑从海山磁性获得的古地磁年龄。我们不考虑有孔虫年龄，它只给出海山的最小年龄。必须考虑样品和辐射测年方法固有的可靠性问题。整个岩石的测年通常必须被忽略，除非它们经过特殊处理，Ar/Ar 增量加热测年应优于其他方法，并且不通过 Baksi（本卷）讨论的可靠性标准的数据应被忽略。因此，使用我们数据库中编译的年龄必须经过过滤，我们鼓励用户严格检查发布日期的初始论文。
Hotspot theory was first proposed on the basis of the observation of linear volcanic chains on the Pacific plate and assumed age progression within these chains. Knowledge of the ages of islands and seamounts is therefore of primary importance to analyzing intraplate volcanism and deciphering the history of hotspot tracks. In this paper we review published radiometric ages of islands and seamounts on the Pacific plate to help further reconstruction. We present a compilation of 1645 radiometric ages sorted by chain and further by island or seamount, along with a brief overview of each chain. Paleomagnetic ages obtained from seamount magnetism have not been considered, except for some oceanic plateaus (e.g., Shatsky rise). We do not consider foraminifer ages, which only give minimum ages of seamounts. Reliability problems intrinsic to the samples and to the radiometric dating methods must be considered. Dating of whole rocks must generally be disregarded unless they have been subject to special treatment, Ar/Ar incremental heating dating should be preferred over other methods, and data that do not pass the reliability criteria discussed by Baksi (this volume) should be disregarded. Thus use of the ages compiled in our database must be done in the light of filtering, and we encourage the user to check critically the initial papers in which the dates were published.