ELASTIC LAYER THICKENING WITH AGE OF THE OCEANIC LITHOSPHERE - A TOOL FOR PREDICTION OF THE AGE OF VOLCANOS OR OCEANIC-CRUST

被引：71

作者：

CALMANT, S ^{[1
]}

FRANCHETEAU, J ^{[1
]}

CAZENAVE, A ^{[1
]}

机构：

[1] INST PHYS GLOBE,F-75252 PARIS 05,FRANCE

来源：

GEOPHYSICAL JOURNAL INTERNATIONAL | 1990年 / 100卷 / 01期

关键词：

age prediction; elastic thickness; oceanic lithosphere; volcanoes;

D O I：

10.1111/j.1365-246X.1990.tb04567.x

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

To first order, the estimated thickness Te of the elastic part of the oceanic lithosphere increases linearly with the square root of the age of the lithosphere at the time of loading, Δt. In order to quantify this relationship in the particular case of volcanic loading, a synthesis of Te estimates reported both in this paper and in previous studies is conducted. Excluding the anomalously low estimates from the south‐central Pacific, the values are very consistent for the three main oceans and follow the empirical relationship: Te (km) = (2.7 ± 0.15)½Δt (Ma). the relationship is used to predict the age of volcanoes when the age of the crust is known (for the Trindade chain in the south Atlantic Ocean) and to predict the age of the crust when the age of the volcanoes is known (for the Pacific plate east of the Tonga trench). the age estimates are in good agreement with the structural setting. Copyright © 1990, Wiley Blackwell. All rights reserved

引用

页码：59 / 67

页数：9

共 48 条

[1] OBSERVATIONS OF FLEXURE AND THE RHEOLOGY OF THE OCEANIC LITHOSPHERE [J].