皇帝海山链：夏威夷热点地幔柱在地球地幔中的向南移动。

The Emperor Seamounts: southward motion of the Hawaiian hotspot plume in Earth's mantle.

作者信息

Tarduno John A, Duncan Robert A, Scholl David W, Cottrell Rory D, Steinberger Bernhard, Thordarson Thorvaldur, Kerr Bryan C, Neal Clive R, Frey Fred A, Torii Masayuki, Carvallo Claire

机构信息

Department of Earth and Environmental Sciences, University of Rochester, Rochester, NY 14627, USA.

出版信息

Science. 2003 Aug 22;301(5636):1064-9. doi: 10.1126/science.1086442. Epub 2003 Jul 24.

DOI:10.1126/science.1086442

PMID:12881572

Abstract

The Hawaiian-Emperor hotspot track has a prominent bend, which has served as the basis for the theory that the Hawaiian hotspot, fixed in the deep mantle, traced a change in plate motion. However, paleomagnetic and radiometric age data from samples recovered by ocean drilling define an age-progressive paleolatitude history, indicating that the Emperor Seamount trend was principally formed by the rapid motion (over 40 millimeters per year) of the Hawaiian hotspot plume during Late Cretaceous to early-Tertiary times (81 to 47 million years ago). Evidence for motion of the Hawaiian plume affects models of mantle convection and plate tectonics, changing our understanding of terrestrial dynamics.

摘要

夏威夷-帝王热点轨迹有一个显著的弯曲，这成为了一种理论的基础，该理论认为固定在深部地幔的夏威夷热点追踪了板块运动的变化。然而，通过海洋钻探回收的样本的古地磁和放射性年龄数据定义了一个随年龄推进的古纬度历史，表明帝王海山趋势主要是由晚白垩世至早第三纪时期（8100万至4700万年前）夏威夷热点地幔柱的快速运动（每年超过40毫米）形成的。夏威夷地幔柱运动的证据影响了地幔对流和板块构造模型，改变了我们对地球动力学的理解。