Strength and elastic thickness variations in the Arabian Plate: A combination of temperature, composition and strain rates of the lithosphere
Strength and elastic thickness variations in the Arabian Plate: A combination of temperature, composition and strain rates of the lithosphere
复制标题
阿拉伯板块的强度和弹性厚度变化:岩石圈温度、成分和应变率的组合
DOI:
10.1016/j.tecto.2017.03.004
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发表时间:
2017
期刊:
影响因子:
2.9
通讯作者:
Al-Arifi
中科院分区:
文献类型:
--
作者:
Tesauro;Kaban;M. K.;Petrunin;A. G.;El Khrepy;Al-Arifi
The Arabian Plate shows a strong asymmetry between its Shield and Platform, in terms of topography, seismic velocity and density structure of the upper mantle. This asymmetry also results in significant rheological differences between these blocks, as revealed by the effective elastic thickness (EET) estimates, obtained using a spectral gravity method. However, these estimates may be biased due to various factors. Therefore, other approaches based on a direct rheological modeling of the lithospheric structure should be employed to verify these results. In this study, we use a recent model of the lithosphere, based on an integrative interpretation of the gravity field and seismic tomography, to correct an initial thermal model obtained from the inversion of seismic velocity, assuming a uniform composition. The results are used together with the most recent crustal model of the Arabian Plate to construct two alternative models of strength and EET of the lithosphere. The first model (Model I) assumes a constant value of 10− 15s− 1for the strain rates. In the second model (Model II), we used the strain rates obtained from a global mantle flow model. Model I confirms the asymmetry in the rigidity of the Shield and Platform. In contrast, Model II shows that the influence of the variable strain rates causes a significant increase in the strength and EET of the central and eastern part of the Shield and in contrast to previous studies, reveals that most of the Arabian Plate is a long-term stable tectonic feature, predominantly characterized by large EET values (≥ 70 km).
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影响因子:
18.3
作者:
M. Kaban;W. Mooney;A. Petrunin
通讯作者:
M. Kaban;W. Mooney;A. Petrunin
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
H. Förster;A. Förster;R. Oberhänsli;D. Stromeyer
通讯作者:
D. Stromeyer
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
Sung‐Joon Chang;M. Merino;S. van der Lee;S. Stein;C. Stein
通讯作者:
C. Stein
影响因子:
2.9
作者:
Koulakov, Ivan;Burov, Evgeniy;Bushenkova, Natalia
通讯作者:
Bushenkova, Natalia
影响因子:
2.9
作者:
M. Gettings;H. Blank;W. Mooney;J. Healy
通讯作者:
J. Healy