Lithosphere structures dynamics in the central High Atlas (Morocco) by seismic tomography and gravimetric data

Timoulali, Youssef; Bouiflane, Mustapha; Bouskri, Ghizlane; Azguet, Roumaissae; Fellah, Younes El

doi:10.1016/j.geog.2019.01.005

Cited by 5 publications

(2 citation statements)

References 33 publications

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“…However, the estimated tectonic shortening due to the compression during the Eocene and Pliocene-Quaternary is not enough to support the topography of the Atlas (Beauchamp et al, 1999;Frizon de Lamotte et al, 2000;Gomez et al, 1998;Teixell et al, 2003Teixell et al, , 2009. Previous studies suggested no deep crustal root (Ayarza et al, 2005;Missenard et al, 2006;Sandvol et al, 1998) and thinned lithosphere beneath the mountains (Anahnah et al, 2011;Ayarza et al, 2005;Missenard et al, 2006;Sun et al, 2014;Teixell et al, 2003Teixell et al, , 2005Timoulali et al, 2019;Zeyen et al, 2005). Detailed geophysical investigations further found a conduit of the low-velocity anomalies below the mountains (Bezada et al, 2014;Calvert et al, 2000;Fullea et al, 2010;Miller et al, 2015;Palomeras et al, 2014;Seber et al, 1996;Timoulali et al, 2015).…”

Section: Tectonic Framework Of the Moroccan Atlas And Its Deep Structurementioning

confidence: 96%

The origin of the low-velocity anomalies beneath the rootless Atlas Mountains: an insight gained from modeling of anisotropy developed by the travel of Canary Plume

Lee

Bezada

Kim

2022

Preprint

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When a mantle plume rises from the deep mantle and reaches the base of a tectonic plate, it changes the traveling direction from vertical to horizontal. The horizontal spread of plume material is often radially asymmetric. The plume found below the Canary Hotspot is an example. Previous studies have suggested that the channeling of the Canary Plume toward the westernmost Mediterranean (Alboran Sea) may have contributed to the high elevation of the Moroccan Atlas Mountains while regional upwelling and edge-driven convection are proposed as other candidates to explain the topography. Since mantle flow can develop seismic anisotropy, in this study we incorporate anisotropy as a priori constraint in teleseismic P-wave tomography. Our improved tomography result favors the hypothesis that the lateral travel of Canary Plume material supports the isostatically unstable Moroccan Atlas.

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Section: Tectonic Framework Of the Moroccan Atlas And Its Deep Structurementioning

confidence: 96%

The origin of the low-velocity anomalies beneath the rootless Atlas Mountains: an insight gained from modeling of anisotropy developed by the travel of Canary Plume

Lee

Bezada

Kim

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…However, the estimated tectonic shortening due to compression during the Eocene and Pliocene‐Quaternary is not sufficient to support the topography of the Atlas (e.g., Beauchamp et al., 1999; Frizon de Lamotte et al., 2000; Fullea et al., 2007, 2008; Gomez et al., 1998; Teixell et al., 2003, 2009). Previous studies have suggested (a) the absence of a deep crustal root (Ayarza et al., 2005; Miller & Becker, 2014; Missenard et al., 2006; Sandvol et al., 1998) or (b) thinned lithosphere beneath mountains (Anahnah et al., 2011; Ayarza et al., 2005; Civiero et al., 2018; Miller & Becker, 2014; Missenard et al., 2006; Sun et al., 2014; Teixell et al., 2003, 2005; Timoulali et al., 2019; Zeyen et al., 2005). Detailed geophysical investigations have revealed low‐velocity anomalies in the upper mantle below the mountains (e.g., Bezada et al., 2014; Calvert et al., 2000; Civiero et al., 2018, 2019; Fullea et al., 2010; Miller et al., 2015; Palomeras et al., 2014; Seber et al., 1996; Timoulali et al., 2015).…”

Section: Introductionmentioning

confidence: 99%

The Origin of the Low‐Velocity Anomalies Beneath the Rootless Atlas Mountains: Insights Gained From Modeling of Anisotropy Developed by the Travel of Canary Plume

2022

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Since Wilson (1963) suggested the existence of mantle plumes to explain the Hawaiian island chain, the vertical rise of buoyant material from the deep mantle and consequent decompression melting near the surface have been considered a mechanism for the formation of hotspots (e.g., Morgan, 1971;Sleep, 1990). The buoyancy of the hot mantle primarily originates from temperature. Therefore, there have been many attempts to better constrain the mantle plume structure using seismic tomography as the high-temperature mantle is imaged as low-seismic-velocity anomalies (e.g.

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Kinematics of Structures and Basin Evolution in the Central High Atlas. Constraints from AMS and Paleomagnetic Data

et al. 2023

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Lithosphere structures dynamics in the central High Atlas (Morocco) by seismic tomography and gravimetric data

Cited by 5 publications

References 33 publications

The origin of the low-velocity anomalies beneath the rootless Atlas Mountains: an insight gained from modeling of anisotropy developed by the travel of Canary Plume

The origin of the low-velocity anomalies beneath the rootless Atlas Mountains: an insight gained from modeling of anisotropy developed by the travel of Canary Plume

The Origin of the Low‐Velocity Anomalies Beneath the Rootless Atlas Mountains: Insights Gained From Modeling of Anisotropy Developed by the Travel of Canary Plume

Kinematics of Structures and Basin Evolution in the Central High Atlas. Constraints from AMS and Paleomagnetic Data

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