Stress development in heterogenetic lithosphere: Insights into earthquake processes in the New Madrid Seismic Zone
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- 作者：Yan Zhana ; Guiting Houa ; gthou@pku.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Timothy Kuskyb ; Patricia M. Greggc
- 关键词：New Madrid Seismic Zone ; Intraplate earthquakes ; Heterogeneous lithosphere ; Viscoelastic model ; Stress
- 刊名：Tectonophysics
- 出版年：2016
- 出版时间：7 March 2016
- 年：2016
- 卷：671
- 期：Complete
- 页码：56-62
- 全文大小：2609 K
文摘
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Numerical models test the effects of lithospheric heterogeneities on earthquakes.
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A mantle low-velocity zone facilitates lithospheric stress localization.
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High differential stresses reactivate fossil faults and trigger earthquakes.
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A strong lower crust in NMSZ prevents decoupling of the mantle and upper crust.
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In the Midcontinent “normal” mantle does not catalyze stress development.