| DOI: | 10.1016/j.tecto.2021.228718
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| 论文题名: | Seismic features of the Permian Basin Region from receiver function analysis |
| 作者: | Li P.; Huang G.-C.D.; Savvaidis A.
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| 刊名: | Tectonophysics
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| ISSN: | 00401951
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| 出版年: | 2021
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| 卷: | 801 | | 语种: | 英语
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| 中文关键词: | Moho depth
; Permian Basin
; Receiver function
; Sedimentary velocity discontinuity
; Vp/Vs ratio
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| 英文关键词: | Seismology
; Velocity
; Waveform analysis
; Mafic intrusion
; Moment magnitudes
; Receiver function analysis
; Receiver functions
; Sedimentary basin
; Seismic waveforms
; Teleseismic events
; Two layer model
; Sedimentology
; depth
; Moho
; P-wave
; S-wave
; seismic moment
; seismic velocity
; seismic wave
; seismograph
; Permian Basin
; United States
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| 英文摘要: | We used receiver function (RF) analysis to derive new seismic models of Moho depth, crustal Vp/Vs ratio, depth of sedimentary velocity discontinuity, and corresponding sedimentary Vp/Vs ratio in the Permian Basin region from the seismic waveform data of 260 moment magnitude (Mw) ≥ 6 teleseismic events. We obtained the optimal models by searching one- and two-layer models and comparing similarity between the synthetic and observed RFs. We find the first-order velocity discontinuity in sedimentary basins is shallower than the basin basement. The Delaware Basin (DB) exhibits a bowl-shaped sedimentary velocity discontinuity, with depths ranging from 1.7 km to 5.8 km, whereas the Central Basin Platform (CBP) has a shallow sedimentary velocity discontinuity, with 0.2 km to 2.7 km depths. Moho depth ranges from 36 km to 46 km in the Permian Basin region. The median Vp/Vs ratios of the crust are 1.75, 1.79, and 1.78 in the DB, CBP, and the Diablo Platform (DP), respectively. Our interpretation of the different Vp/Vs ratio in the three subregions is that the crust in the DB includes more low-Vp/Vs-ratio felsic rocks, and the crust in the CBP and DP contains more high-Vp/Vs-ratio gabbroic and basaltic rocks from the Proterozoic and Phanerozoic mafic intrusion. © 2021 |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/170840
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| Appears in Collections: | 气候变化与战略
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作者单位: | Bureau of Economic Geology, Jackson School of Geosciences, The University of Texas at Austin, Austin, TX 78713, United States
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| Recommended Citation: | |
Li P.,Huang G.-C.D.,Savvaidis A.. Seismic features of the Permian Basin Region from receiver function analysis[J]. Tectonophysics,2021-01-01,801
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