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首页> 外文期刊>Earth and Planetary Science Letters: A Letter Journal Devoted to the Development in Time of the Earth and Planetary System >A notch structure on the Moho beneath the Eastern San Gabriel Mountains
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A notch structure on the Moho beneath the Eastern San Gabriel Mountains

机译：东部圣盖博山脉下方的莫霍山上的一个缺口结构

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摘要

Synthetic waveform modeling of the anomalous receiver functions for two stations in the eastern San Gabriel Mountains, California, suggests that a flat-topped notch structure exists on the Moho. North of the San Andreas Fault (SAF), the Moho depth is 36-38 km and is 33-35 km south of the San Gabriel Fault (SGF), but in-between under the Mt. Baldy block, it is only similar to 29 km. The inferred notch structure is also supported by the Pms arrival times along the SCSN and the LARSE I profiles. The shallow Moho block correlates well with the surficial exposure of the lower plate Pelona Schist or where it resides at very shallow depth. The large Moho offsets across the two major faults can be either related to differential uplifting reflected by the difference in the denudation rate and the exposure of the lower plate Pelona Schist, or it can be the result of the juxtaposition of the distinctive terranes with initially different Moho depth due to the strike-slip movements along the two major faults. (C) 2007 Elsevier B.V. All rights reserved.
机译：加利福尼亚州圣盖博山脉东部两个站的异常接收器功能的合成波形建模表明，莫霍面存在一个平顶的陷波结构。在圣安德烈亚斯断层（SAF）以北，莫霍深度为36-38 km，在圣加布里埃尔断层（SGF）以南33-35 km，但在山下。秃子地块，仅相距29公里。沿SCSN和LARSE I配置文件的Pms到达时间也支持推断的陷波结构。较浅的Moho块与下板Pelona Schist或其表面处很浅的深度很好地相关。横跨两个主要断层的较大莫霍偏移可能与剥蚀速率和下板片Pelona Schist的暴露所反映的差异抬升有关，也可能是由于初始地不同的独特地层并置的结果由于沿着两个主要断层的走滑运动，莫霍面深度。 （C）2007 Elsevier B.V.保留所有权利。

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